select发展史

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首页 >> WebDN 技术文档 >> Html教程 >> Page 7 >> select发展史

select发展史

[摘要]

本文旨在大家对select和模拟select有一个全面地了解,使此项技术能发挥出更高的水平。

最初的select的确很平淡,就是一个下拉选项列表:

运行代码框

???? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

日久天长之后,人们对select要求高了,要修一修边幅:

运行代码框

<br><br> <script> i=1; </script> <center> <form name="form1"> <select name="select01"> <option>11111 111111 111111111111</option> <option>2222222</option> <option>333333</option> <option>4444444</option> </select> <span style="position:relative;left:-23px;width:17px;height:17px;font:7px 'wingdings 3';color:#cc0000;background:cyan;border:2px outset;text-align:center;padding-top:3px;cursor:default" onclick="if(i>=document.form1.select01.options.length){i=0}document.form1.select01.options[i].selected=true;i++">q <iframe src="" style="position:absolute;top:0;left:0;z-index:-1; width:15px;height:15px;filter:alpha(opacity=0))" frameborder="0"></iframe> </span> </form> <br><br><br> <html> <head> <title>Untitled Document</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <style> .table1{background-color:white;FONT-FAMILY: Courier New, Courier;font-size:12px} .td_out{FONT-FAMILY: Courier New, Courier;font-size:12px;color:#000000;height:15px;border:1 solid #ffffff;} .td_over{FONT-FAMILY: Courier New, Courier;font-size:12px;cursor:default;background-color:#3366cc;border:1 solid #000000;color:#ffffff;height:15px} .slv{vertical-align:bottom;FONT-FAMILY: Courier New, Courier;font-size:12px;border-left-width:0;border-top-width:0;border-bottom-width:0;border-right:0 solid #000000;vertical-align:middle;height:18px;color:#000000;} .down{position:relative;left:-2px;font-size:11px;vertical-align:middle;width:16;height:16;color:#2050b0;background-color:#D0DFF7;border:1 solid #9fA3Ce;writing-mode:tb-rl;font-weight:bold; } .seldiv{ position:absolute;z-index:1000;overflow-x:hidden;border-left:1 solid #000000;border-bottom:1 solid #000000;border-right:1 solid #000000; SCROLLBAR-FACE-COLOR: #d0dff7; SCROLLBAR-HIGHLIGHT-COLOR: #d0dff7; SCROLLBAR-SHADOW-COLOR: #FFFFFF; SCROLLBAR-3DLIGHT-COLOR: #FFFFFF; SCROLLBAR-ARROW-COLOR: #ffffff; SCROLLBAR-TRACK-COLOR: #ffffff; SCROLLBAR-DARKSHADOW-COLOR: #d0dff7;} </style> <script language="JavaScript"> document.onclick=hiddenDiv; function getDivCount() { var arr=document.all; re=0; for (i=0;i<arr.length;i++) { str=arr[i].id; if (str.indexOf("ZfDiv_")==0) { re++; } } return re; } function getI(ObjId) {//取得objId的最后一位数字 for (i=0;i<ObjId.length;i++) { if (ObjId.charAt(i)=="_") return ObjId.substr(i+1,ObjId.length-1); } return 0; } function select_edit(TextObj){//鼠标经过高亮度 TextObj.focus();TextObj.select(); } function checkValue(ID){ var sl=document.all["ZfText_"+ID]; var sv=document.all["ZfDiv_"+ID]; var da=document.all["ZfData_"+ID]; sv.style.display='' for(i=0;i<da.rows.length;i++)da.rows[i].style.display='' for(i=0;i<da.rows.length;i++){ if(da.rows[i].cells[0].innerText.indexOf(sl.value)!=0)da.rows[i].style.display='none'; getPosition(ID); } } function getL(e){ var l=e.offsetLeft; while(e=e.offsetParent){ l+=e.offsetLeft; } return l } function getT(e){ var t=e.offsetTop; while(e=e.offsetParent){ t+=e.offsetTop; } return t } function getPosition(ID){ var sv=document.all["ZfDiv_"+ID]; var sl=document.all["ZfText_"+ID]; var spn=document.all["ZfSpan_"+ID]; var da=document.getElementById("ZfData_"+ID); sv.style.pixelWidth=spn.offsetWidth; da.style.pixelWidth=sv.offsetWidth; sv.style.pixelLeft=getL(spn); sv.style.pixelTop=getT(spn)+sl.offsetHeight+3; if(da.offsetHeight>200){ sv.style.pixelHeight=200; sv.style.overflowY='scroll'; } else { sv.style.pixelHeight=da.offsetHeight; sv.style.overflowY='hidden'; } } function dropDown(ID){ var sv=document.all["ZfDiv_"+ID] var tb=document.all["ZfData_"+ID] if(sv.style.display=='none'){ sv.style.display=''; for(i=0;i<tb.rows.length;i++)tb.rows[i].style.display='' getPosition(ID); } else { sv.style.display='none'; } }//下拉摸拟层 function hiddenDiv(){ var o=window.event.srcElement.id; var tb var sv if(o=="") { for (j=0;j<getDivCount();j++) { tb=document.getElementById('ZfData_'+j); sv=document.getElementById('ZfDiv_'+j); for(i=0;i<tb.rows.length;i++) tb.rows[i].style.display=''; sv.style.display='none'; } } }//隐藏模拟层 function setValue(obj){ var i=getI(obj.parentElement.parentElement.parentElement.id); //alert(obj.parentElement.parentElement.parentElement.id); var sl=document.all["ZfText_"+i]; var sv=document.all['ZfDiv_'+i]; sl.value=obj.innerText; sv.style.display='none'; //sldIndex=obj.parentElement.rowIndex; }//给文本框赋值 function over(obj){ obj.className="td_over" obj.title=obj.innerText obj.focus(); }//鼠标经过变色 function out(obj){ obj.className="td_out" }//鼠标离开还原 function String.prototype.Trim(){return this.replace(/(^\s*)|(\s*$)/g,'')}//自定义去空格函数Trim() //增加list的接口,ID表示该组控件是页面中的第几个 function add(v,ID){ var sv=document.all['ZfDiv_'+ID]; if(!v.Trim()){return;} var tb=document.all['ZfData_'+ID]; var c=tb.insertRow(tb.rows.length).insertCell(); c.innerHTML='<nobr>'+v.Trim()+'</nobr>'; c.onmouseover=new Function("over(this)"); c.onmouseout=new Function("out(this)"); c.onclick=new Function("setValue(this)"); c.className="td_out"; v=''; } //增加inpnubox的接口,在页面中产生一个inputbox控件,下拉列表为空 function addText(name,DefValue) { var i=getDivCount(); document.write('<span id="ZfSpan_'+i+'" style="border:1 solid #9CA0CB">'); document.write('<input type="text" value="'+DefValue+'" name="'+name+'" id="ZfText_'+i+'" ondblclick="ZfDrop_'+i+'.click()" class="slv" onmouseover="select_edit(this)" onkeyup="checkValue('+i+')"><input type=button id="ZfDrop_'+i+'" value=">" onclick="this.hideFocus=true;dropDown('+i+');" class="down" onmouseover="this.style.backgroundColor=#EEF3FD" onmouseout="this.style.backgroundColor=\'\'" onmousedown="this.style.backgroundColor=#ABC4F5" onmouseup="this.style.backgroundColor=\'\'"></span>'); document.write('<div id="ZfDiv_'+i+'" class="seldiv" style="display:none;"><table id="ZfData_'+i+'" onselectstart="return false" border="0" cellspacing="0" cellpadding="0" class="table1"></table></div>'); } </script> </head> <body> <script language="JavaScript"> addText("name1","a"); add("1234",0); add("1234",0); addText("name1","a"); add("1234",1); add("1234",1); </script>

???? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

要加一些链接,变成菜单:

运行代码框

<STYLE> body { cursor: url(http://vip.6to23.com/candylau/image/xiucursor.cur)} </STYLE> <style> .select{border: 0 inset buttonface; width: 100; font: icon; cursor: default;} .selected{border: 0 inset buttonface; background: window; padding: 0; font: icon;} .selectTable{height: 100%; width: 100%;border: 2 inset buttonhighlight; background: buttonface;} .option {font: icon; padding: 1; padding-left: 3; padding-right: 3; width: 100%;} .dropDown{position: absolute; visibility: hidden; width: 100%;border: 1 solid windowtext; padding: 0;background: window;} .select .button {width: 16px; height: 5; font-family: webdings; padding: 0;font-size: 11px; border: 2 outset buttonhighlight;} </style> <script type="text/javascript"> var overOptionCss = "background: highlight; color: highlighttext"; var sizedBorderCss = "2 inset buttonhighlight"; var globalSelect; var ie4 = (document.all != null); var q = 0; function initSelectBox(el) { copySelected(el); var size = el.getAttribute("size"); el.options = el.children[1].children; el.selectedIndex = findSelected(el); el.remove = new Function("i", "int_remove(this,i)"); el.item = new Function("i", "return this.options[i]"); el.add = new Function("e", "i", "int_add(this, e, i)"); el.options[el.selectedIndex].selected = true; dropdown = el.children[1]; if (size != null) { if (size > 1) { el.size = size; dropdown.style.zIndex = 0; initSized(el); } else { el.size = 1; dropdown.style.zIndex = 99; if (dropdown.offsetHeight > 200) { dropdown.style.height = "200"; dropdown.style.overflow = "auto"; } } } highlightSelected(el,true); } function int_remove(el,i) { if (el.options[i] != null) el.options[i].outerHTML = ""; } function int_add(el, e, i) { var html = "<div class='option' noWrap"; if (e.value != null) html += " value='" + e.value + "'"; if (e.style.cssText != null) html += " style='" + e.style.cssText + "'"; html += ">"; if (e.text != null) html += e.text; html += "</div>" if ((i == null) || (i >= el.options.length)) i = el.options.length-1; el.options[i].insertAdjacentHTML("AfterEnd", html); } function initSized(el) { var h = 0; el.children[0].style.display = "none"; dropdown = el.children[1]; dropdown.style.visibility = "visible"; if (dropdown.children.length > el.size) { dropdown.style.overflow = "auto"; for (var i=0; i<el.size; i++) { h += dropdown.children[i].offsetHeight; } if (dropdown.style.borderWidth != null) { dropdown.style.pixelHeight = h + 4; } else dropdown.style.height = h; } dropdown.style.border = sizedBorderCss; el.style.height = dropdown.style.pixelHeight; } function copySelected(el) { var selectedIndex = findSelected(el); selectedCell = el.children[0].rows[0].cells[0]; selectedDiv = el.children[1].children[selectedIndex]; selectedCell.innerHTML = selectedDiv.outerHTML; } function findSelected(el) { var selected = null; ec = el.children[1].children; var ecl = ec.length; for (var i=0; i<ecl; i++) { if (ec[i].getAttribute("selected") != null) { if (selected == null) { selected = i; } else ec[i].removeAttribute("selected"); } } if (selected == null) selected = 0; return selected; } function toggleDropDown(el) { if (el.size == 1) { dropDown = el.children[1]; if (dropDown.style.visibility == "") dropDown.style.visibility = "hidden"; if (dropDown.style.visibility == "hidden") showDropDown(dropDown); else hideDropDown(dropDown); } } function optionClick() { el = getReal(window.event.srcElement, "className", "option"); if (el.className == "option") { dropdown = el.parentElement; selectBox = dropdown.parentElement; oldSelected = dropdown.children[findSelected(selectBox)] if(oldSelected != el) { oldSelected.removeAttribute("selected"); el.setAttribute("selected", 1); selectBox.selectedIndex = findSelected(selectBox); } if (selectBox.onchange != null) { if (selectBox.id != "") { eval(selectBox.onchange.replace(/this/g, selectBox.id)); } else { globalSelect = selectBox; eval(selectBox.onchange.replace(/this/g, "globalSelect")); } } if (el.backupCss != null) el.style.cssText = el.backupCss; copySelected(selectBox); toggleDropDown(selectBox); highlightSelected(selectBox, true); } } function optionOver() { var toEl = getReal(window.event.toElement, "className", "option"); var fromEl = getReal(window.event.fromElement, "className", "option"); if (toEl == fromEl) return; var el = toEl; if (el.className == "option") { if (el.backupCss == null) el.backupCss = el.style.cssText; highlightSelected(el.parentElement.parentElement, false); el.style.cssText = el.backupCss + "; " + overOptionCss; this.highlighted = true; } } function optionOut() { var toEl = getReal(window.event.toElement, "className", "option"); var fromEl = getReal(window.event.fromElement, "className", "option"); if (fromEl == fromEl.parentElement.children[findSelected(fromEl.parentElement.parentElement)]) { if (toEl == null) return; if (toEl.className != "option") return; } if (toEl != null) { if (toEl.className != "option") { if (fromEl.className == "option") highlightSelected(fromEl.parentElement.parentElement, true); } } if (toEl == fromEl) return; var el = fromEl; if (el.className == "option") { if (el.backupCss != null) el.style.cssText = el.backupCss; } } function highlightSelected(el,add) { var selectedIndex = findSelected(el); selected = el.children[1].children[selectedIndex]; if (add) { if (selected.backupCss == null) selected.backupCss = selected.style.cssText; selected.style.cssText = selected.backupCss + "; " + overOptionCss; } else if (!add) { if (selected.backupCss != null) selected.style.cssText = selected.backupCss; } } function hideShownDropDowns() { var el = getReal(window.event.srcElement, "className", "select"); var spans = document.all.tags("SPAN"); var selects = new Array(); var index = 0; for (var i=0; i<spans.length; i++) { if ((spans[i].className == "select") && (spans[i] != el)) { ropdown = spans[i].children[1]; if ((spans[i].size == 1) && (dropdown.style.visibility == "visible")) selects[index++] = dropdown; } } for (var j=0; j<selects.length; j++) { hideDropDown(selects[j]); } } function hideDropDown(el) { if (typeof(fade) == "function") fade(el, false); else el.style.visibility = "hidden"; } function showDropDown(el) { if (typeof(fade) == "function") fade(el, true); else if (typeof(swipe) == "function") swipe(el, 2); else el.style.visibility = "visible"; } function initSelectBoxes() { var spans = document.all.tags("SPAN"); var selects = new Array(); var index = 0; for (var i=0; i<spans.length; i++) { if (spans[i].className == "select") selects[index++] = spans[i]; } for (var j=0; j<selects.length; j++) { initSelectBox(selects[j]); } } function getReal(el, type, value) { temp = el; while ((temp != null) && (temp.tagName != "BODY")) { if (eval("temp." + type) == value) { el = temp; return el; } temp = temp.parentElement; } return el; } if (ie4) { window.onload = initSelectBoxes; document.onclick = hideShownDropDowns; } function writeSelectBox(matrix, id, size, onchange, css) { var d = window.document; var ie4 = (document.all != null); if (ie4) { //alert("Before!"); var s = createIEString(matrix, id, size, onchange, css); document.write(s); //alert("After!"); }else { document.write(createXString(matrix, id, size, onchange, css));} } function createIEString(matrix, id, size, onchange, css) { var str = ""; str += '<span class="select"'; if (size == null) size = 1; str += ' size="' + size + '"'; if (id != null) str += ' id="' + id + '"'; if (onchange != null) str += ' onchange="' + onchange + '"'; if (css != null) str += ' style="' + css + '"'; str += '>\n'; str += '<table class="selectTable" cellspacing="0" cellpadding="0"\n'; str += ' onclick="toggleDropDown(this.parentElement)">\n'; str += '<tr>\n'; str += '<td class="selected"> </td>\n'; str += '<td align="CENTER" valign="MIDDLE" class="Button"\n'; str += ' onmousedown="this.style.border=\'2 inset buttonhighlight\'"\n'; str += ' onmouseup="this.style.border=\'2 outset buttonhighlight\'">\n'; str += '<span style="position: relative; left: 0; top: -2; width: 100%;">6</span></td>\n'; str += '</tr>\n'; str += '</table>\n'; str += '<div class="dropDown" onclick="optionClick()" onmouseover="optionOver()" onmouseout="optionOut()">\n'; for (var i=0; i<matrix.length; i++) { html = matrix[i].html; value = matrix[i].value; css = matrix[i].css; selected = matrix[i].selected; str += '<div class="option"'; if (value != null) str += ' value="' + value + '"'; if (css != null) str += ' style="' + css + '"'; if (selected != null) str += ' selected'; str += '>\n'; str += html; str += '</div>\n'; } str += '</div>\n'; str += '</span>\n'; return str; } function createXString(matrix, id, size, onchange, css) { var str = '<form>\n'; str += '<select'; if (size == null) size = 1; str += ' size="' + size + '"'; if (id != null) str += ' id="' + id + '"'; if (onchange != null) str += ' onchange="' + onchange + '"'; str += '>\n'; for (var i=0; i<matrix.length; i++) { html = matrix[i].html; value = matrix[i].value; css = matrix[i].css; selected = matrix[i].selected; str += '\n<option'; if (value != null) str += ' value="' + value + '"'; if (selected != null) str += ' selected'; str += '>'; str += stripTags(html); str += '</option>\n'; } str += '\n</select>\n'; str += '</form>\n'; return str; } function stripTags(str) { var s = 0; var e = -1; var r = ""; s = str.indexOf("<",e); do { r += str.substring(e + 1,s); e = str.indexOf(">",s); s = str.indexOf("<",e); } while ((s != -1) && (e != -1)) r += str.substring(e + 1,str.length); return r; } function Option(html, value, css, selected) { this.html = html; this.value = value; this.css = css; this.selected = selected; } </script> <script type="text/javascript"> var optionArray = new Array(); optionArray[0] = new Option("Item 1", "value 1", "color: blue; text-decoration: underline;"); optionArray[1] = new Option("Item <b>2</b>", "value 2"); optionArray[2] = new Option("Item 3", "value 3", "color: red;", "selected"); optionArray[3] = new Option("Item 4", "value 4"); optionArray[4] = new Option("Item 5", "value 5"); writeSelectBox(optionArray, "select1", 1, "alert(this.options[this.selectedIndex].value)", "margin-left: 10;"); </script> <br> <script type="text/javascript"> writeSelectBox(optionArray, "select3", 3, "alert(this.options[this.selectedIndex].value)", "margin-left: 10;"); </script> <br><br><br><br> <select onchange="if(this.options[this.selectedIndex].value!=''){location=this.options[this.selectedIndex].value;}" > <option value="http://www.163.com">网易</option> <option value="http://www.google.com">google</option> <option value="http://wwwsohu.com">搜狐</option> </select> <br><br><br><br> <form> <select size="1" name="D1" onchange=if(s=document.getElementById("S1")){s.style.backgroundColor=value}> <option selected value="white">请选择颜色</option> <option value="red">红色</option> <option value="blue">蓝色</option> <option value="green">绿色</option> </select> <br> <textarea rows="20" name="S1" cols="35"></textarea> </form> <br><br>

???? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

运行代码框

???? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

后来发展到其文字内容可以增、删、编、改，即可以编辑：

运行代码框

<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>EditSelect</title> <script> function isIE(){ a=navigator.appVersion.split(";") b=a[1].split(" ") return parseFloat(b[2]) } if (isIE()<5.5) { scHTML='<div id="selectcontent" class="selectdiv" style="visibility:hidden;"><div id="selecthtml" class="selectcontent">selectáD表</div></div>' } else { scHTML='<div id="selectcontent" class="selectdiv" style="visibility:hidden;"><iframe id=selframe frameborder=0 height=100%></iframe><div id="selecthtml" class="selectcontent">selectáD表</div></div>' } document.write(scHTML) vDiv=selectcontent vDivHtml=selecthtml function editselect(name,size,defaulttext,width,height,readonly){ var combo=this; this.options=new Array(); this.oj=new Array(); this.name=name; this.divname=name+'_div'; this.buttonname=name+'_button'; this.tablename=name+'_table'; this.htmltable=name+'_html' if (!height) this.height=0; else this.height=height if (width) this.width=width if (!size) size=8 if (!defaulttext) defaulttext="" if (!readonly || readonly==0) {readonly="" }else {if (readonly==1) readonly="readonly style=cursor:default";this.readonly=1} esHTML='<div id='+this.divname+'>' +'<table id='+this.tablename+' cellpadding=0 cellspacing=0 class=select><tr><td bgcolor=#FFFFFF>' +'<input type=text class=selecttext size="'+size+'" name='+name+' value="'+defaulttext+'" '+readonly+'><td><button class=selectbutton id='+this.buttonname+'>6</td></tr></table>' +'</div>' document.write(esHTML) this.sbutton=eval("document.all."+this.buttonname) if (this.readonly==1) eval("document.all."+this.name).onclick=function(){combo.show()} this.sbutton.onclick=function(){combo.show()} this.show=function(){ pDiv=eval(combo.divname) pTable=eval(combo.tablename) var vHTML='<table id=htmltable cellspacing="0" cellpadding="2" bgcolor="#ffffff" class="selecttable" width=100%>' for (i=0;i<combo.options.length;i++) { vHTML+='<tr onmouseover="mo(this)" onmouseout="mu(this)" onclick="document.all.'+combo.name+'.value=this.innerText;selectcontent.style.visibility=\'hidden\';'+combo.oj[i]+'"><td nowrap>'+combo.options[i] } vHTML+="</table>" vDivHtml.innerHTML=vHTML vtop=pDiv.offsetTop+pDiv.offsetHeight vleft=pDiv.offsetLeft+2 vParent = pDiv.offsetParent; while (vParent.tagName.toUpperCase() != "BODY") { vleft += vParent.offsetLeft; vtop += vParent.offsetTop; vParent = vParent.offsetParent; } var redge=document.body.clientWidth-vleft var bedge=document.body.clientHeight-vtop if (!combo.width) {vDiv.style.width=pTable.offsetWidth} else {vDiv.style.width=combo.width} if (combo.height==0) { vDiv.style.pixelHeight=parseInt(htmltable.offsetHeight)+2 vDivHtml.style.pixelHeight=parseInt(htmltable.offsetHeight)+2 } else { if (htmltable.offsetHeight>combo.height) { vDiv.style.pixelHeight=combo.height vDivHtml.style.pixelHeight=combo.height } else { vDiv.style.pixelHeight=parseInt(htmltable.offsetHeight)+2 vDivHtml.style.pixelHeight=parseInt(htmltable.offsetHeight)+2 } } vDivHtml.scrollTop=0 if (redge<vDiv.offsetWidth) vDiv.style.left=vleft-1-(vDiv.offsetWidth-redge) else vDiv.style.left=vleft-1 if (bedge<vDiv.offsetHeight) //vDiv.style.top=vtop-vDiv.offsetHeight-pDiv.offsetHeight vDiv.style.top=vtop-vDiv.offsetHeight+bedge else vDiv.style.top=vtop vDivHtml.style.width=parseInt(vDiv.style.width) vDiv.style.visibility="visible" } this.add=function(text,js){ combo.options[combo.options.length]=text combo.oj[combo.oj.length]=js } this.clearall=function(){ combo.options=new Array() } this.about=function(){ } } function mo(obj){ obj.style.backgroundColor="#000099" obj.style.color="#ffffff" } function mu(obj){ obj.style.backgroundColor="" obj.style.color="#000000" } document.onmousedown=function(){ if (vDiv.style.visibility=="visible"){ mx=event.x + document.body.scrollLeft my=event.y + document.body.scrollTop; x1=vDiv.offsetLeft y1=vDiv.offsetTop x2=vDiv.offsetLeft+vDiv.offsetWidth y2=vDiv.offsetTop+vDiv.offsetHeight if (mx<x1 || my<y1 || x2<mx || y2<my) { vDiv.style.visibility='hidden' } } }</script> <style> .selecttext{ border:0px height: 16; font-family:arial; font-size:12px; } .selectbutton{ font-family:webdings; font-size:10px; height: 19; width: 16; border:1px solid #83A5EB; line-height:0px; padding-bottom:3px; background-color:#D1E0FD } .selecttable{ font-family:arial; font-size:12px; cursor:default; } .selectcontent { position: absolute; top:0; left:0; overflow:auto; border:1px solid #000000 } .selectdiv { position: absolute; width:100; overflow:hidden; } .select{ border-collapse: collapse; border:1px solid #7F9DB9 } </style> </head> <body bgcolor="#83A5EB" background="http://moodboy.com/puterjam/blog/attachments/month_0408/oldr_cs1.JPG"> <table border="0" width="100%"> <tr> <td width="151" align="center"><font size="2">可编辑的Select</font></td> <td><script> var sel1=new editselect("select1","25","可编辑的Select",""); sel1.add("这是一个可以编辑的Select") sel1.add("支持CSS") sel1.add("可以通过CSS，修改外形") sel1.add("突破原来的Select诸多限制") </script></td> </tr> <tr> <td width="151" align="center"><font size="2">长度可以随意修改可以设置为只读</font></td> <td> <script> var sel2=new editselect("select2","20","长度可以随意修改",250,82,1); sel2.add("这是一个可以编辑的Select") sel2.add("支持CSS") sel2.add("可以通过CSS，修改外形") sel2.add("作者:舜子制作") sel2.add("MSN:puterjam@msn.com") </script> </td> </tr> <tr> <td width="151" align="center"><font size="2">可以遮盖系统Select</font></td> <td> <script> var sel3=new editselect("select3","25","可以遮盖系统Select","",41); sel3.add("这是一个可以编辑的Select") sel3.add("支持CSS") sel3.add("可以通过CSS，修改外形") sel3.add("突破原来的Select诸多限制") </script> </td> </tr> <tr> <td width="151" align="right">　</td> <td><select><option>系统的Select</option>< /select>　</td> </tr> </table> </body> </html>

???? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

可编辑的select:

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按回车键输入新内容，按DEL删除选中内容<br> <body bgcolor="#fef4d9" onload="s1.focus();"> <script language="JavaScript">  </script> <select name=s1 onkeydown="catch_keydown(this);" onkeypress="catch_press(this);" style="font-size:12px;"><option>---</option></select>

???? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

运行代码框

<SCRIPT LANGUAGE="Javascript"> function inputToSelect(text,value) { i=0; while(document.all.sel.options[i]) { if(document.all.sel.options[i].text == text) return 0; i++; } var oOption = document.createElement("OPTION"); oOption.text=text; oOption.value=value; document.all.sel.add(oOption); } </SCRIPT> <input name="inputx" value="请选择或输入相应内容" onclick="if(this.value=='请选择或输入相应内容'){this.value='';}else{}" style="border-left:1px solid #000000;border-top:1px solid #000000;border-bottom:1px solid #000000;border- right:0px solid #000000;width:134;height:22px;" autocomplete="off"><span style="width:150;overflow:hidden"> <select id="sel" style="width:150;margin-left:-134;border:1px solid #000000;border-left:0px;height:22px;" onChange="inputx.value=value" onClick="inputToSelect(inputx.value,inputx.value)"> <option value="111111111">111111111</option> <option value="汉字也可以">汉字也可以</option> </select> </span>

???? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

为了让select里有更多的图片、css修饰及其他静、动态修饰效果，而select本身优先级别太高，其修饰效果很少且不能满足上述要求，遂涌现出很多模拟的select:

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???? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

运行代码框

<center><sup><font face="隶书" color="blue">上标是不是这个？</font></sup><font size="6" face="华文行楷" color="red">如果要想以其他的文字作为上标该怎么做啊？</font><sub><font face="黑体" color="green"><b><i>下标是不是这个？</b></i>< /font></sub> <br><br>

? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

下面这两个已达到较高的水准（动态内容）：

运行代码框

<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>EditSelect</title> <script> scHTML='<div id="selectcontent" class="selectdiv" style="visibility:hidden;"><iframe id=selframe frameborder=0 height=100%></iframe><div id="selecthtml" class="selectcontent">selectÁÐ±í</div></div>' document.write(scHTML) vDiv=selectcontent vDivHtml=selecthtml function editselect(name,size,defaulttext,width,height,readonly){ var combo=this; this.options=new Array(); this.name=name; this.divname=name+'_div'; this.buttonname=name+'_button'; this.tablename=name+'_table'; this.htmltable=name+'_html' if (!height) this.height=0; else this.height=height if (width) this.width=width if (!size) size=8 if (!defaulttext) defaulttext="" if (!readonly || readonly==0) {readonly="" }else {if (readonly==1) readonly="readonly style=cursor:default";this.readonly=1} esHTML='<div id='+this.divname+'>' +'<table id='+this.tablename+' cellpadding=0 cellspacing=0 class=select><tr><td bgcolor=#FFFFFF>' +'<textarea type=text class=selecttext cols="'+size+'" rows="1" name='+name+' value="'+defaulttext+'" contenteditable="false" '+readonly+'></textarea><td><button class=selectbutton id='+this.buttonname+'>6</td></tr></table>' +'</div>' document.write(esHTML) this.sbutton=eval("document.all."+this.buttonname) if (this.readonly==1) eval(this.name).onclick=function(){combo.show()} this.sbutton.onclick=function(){combo.show()} this.show=function(){ pDiv=eval(combo.divname) pTable=eval(combo.tablename) var vHTML='<table id=htmltable cellspacing="0" cellpadding="2" bgcolor="#ffffff" class="selecttable" width=100%>' for (i=0;i<combo.options.length;i++) { vHTML+='<tr onmouseover="mo(this)" onmouseout="mu(this)" onclick="document.all.'+combo.name+'.innerHTML=\'\';var t=document.createElement(\'span\');t.innerHTML=this.innerHTML;document.all.'+combo.name+'.appendChild(t);selectcontent.style.visibility=\'hidden\'"><td nowrap>'+combo.options[i] } vHTML+="</table>" vDivHtml.innerHTML=vHTML vtop=pDiv.offsetTop+pDiv.offsetHeight vleft=pDiv.offsetLeft+1 vParent = pDiv.offsetParent; while (vParent.tagName.toUpperCase() != "BODY") { vleft += vParent.offsetLeft; vtop += vParent.offsetTop; vParent = vParent.offsetParent; } var redge=document.body.clientWidth-vleft var bedge=document.body.clientHeight-vtop if (!combo.width) {vDiv.style.width=pTable.offsetWidth} else {vDiv.style.width=combo.width} if (combo.height==0) { vDiv.style.pixelHeight=parseInt(htmltable.offsetHeight)+2 vDivHtml.style.pixelHeight=parseInt(htmltable.offsetHeight)+2 } else { if (htmltable.offsetHeight>combo.height) { vDiv.style.pixelHeight=combo.height vDivHtml.style.pixelHeight=combo.height } else { vDiv.style.pixelHeight=parseInt(htmltable.offsetHeight)+2 vDivHtml.style.pixelHeight=parseInt(htmltable.offsetHeight)+2 } } vDivHtml.scrollTop=0 if (redge<vDiv.offsetWidth) vDiv.style.left=vleft-1-(vDiv.offsetWidth-redge) else vDiv.style.left=vleft-1 if (bedge<vDiv.offsetHeight) //vDiv.style.top=vtop-vDiv.offsetHeight-pDiv.offsetHeight vDiv.style.top=vtop-vDiv.offsetHeight+bedge else vDiv.style.top=vtop vDivHtml.style.width=parseInt(vDiv.style.width) vDiv.style.visibility="visible" } this.add=function(text){ combo.options[combo.options.length]=text } this.about=function(){ } } function mo(obj){ obj.style.backgroundColor="#000099" obj.style.color="#ffffff" } function mu(obj){ obj.style.backgroundColor="" obj.style.color="#000000" } document.onmousedown=function(){ if (vDiv.style.visibility=="visible"){ mx=event.x + document.body.scrollLeft my=event.y + document.body.scrollTop; x1=vDiv.offsetLeft y1=vDiv.offsetTop x2=vDiv.offsetLeft+vDiv.offsetWidth y2=vDiv.offsetTop+vDiv.offsetHeight if (mx<x1 || my<y1 || x2<mx || y2<my) { vDiv.style.visibility='hidden' } } } </script> <style> .selecttext{ border:0px height: 22; font-family:arial; font-size:14px; overflow:hidden; } .selectbutton{ font-family:webdings; font-size:10px; height: 25; width: 16; border:1px solid #83A5EB; line-height:0px; padding-bottom:1px; background-color:#D1E0FD } .selecttable{ font-family:arial; font-size:12px; cursor:default; } .selectcontent { position: absolute; top:0; left:0; overflow:auto; border:1px solid #000000 } .selectdiv { position: absolute; width:100; overflow:hidden; } .select{ border-collapse: collapse; border:1px solid #7F9DB9 } </style> </head> <body bgcolor="#83A5EB" marginheight="0" marginwidth="0" topmargin="0" leftmargin="0"> <center> <table border="0" width="234"> <tr> <td width="151" align="center"><font size="2">可编辑的Select</font></td> <td><script> var sel1=new editselect("select1","25","可编辑的Select",""); sel1.add("<marquee behavior=alternate><img src='http://www.blueidea.com/articleimg/bbsimg/icon6.gif' align='absmiddle'> <B><font color=#22FF22>知</font><font color=#FF2222>往</font><font color=#001199>观</font><font color=#00fffa>来</font></B></marquee>") sel1.add("<img src='http://www.blueidea.com/articleimg/bbsimg/icon7.gif' align='absmiddle'> 微风香水") sel1.add("<img src='http://www.blueidea.com/articleimg/bbsimg/icon8.gif' align='absmiddle'> 阳光锈了") sel1.add("<img src='http://www.blueidea.com/articleimg/bbsimg/icon9.gif' align='absmiddle'> <B><font color=#22FF22>观</font><font color=#FF2222>往</font><font color=#001199>知</font><font color=#00fffa>来</font></B>") </script></td> </tr> <tr> <td width="151" align="right">　</td> <td> </td> </tr> </table>

[Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

运行代码框

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title></title> <style type="text/css">  </style> <script lanuage="JScript"> function turnit(ss) { if (ss.style.display=="none") {ss.style.display=""; } else {ss.style.display="none"; } } function sele(tid) { bb.style.display='none'; text1.value=tid.innerText; } function over(tid) { for (var i=1;i<4;i++) { eval('t'+i).className='' } tid.className='ss' } function out(tid) { if (bb.style.display!='none') tid.className='' } </script> <style type="text/css">  </style> </head> <body style="FILTER: progid:DXImageTransform.Microsoft.Gradient(gradientType=0,startColorStr=green,endColorStr=white);SCROLLBAR-ARROW-COLOR: #fc0048; SCROLLBAR-TRACK-COLOR: #242400; SCROLLBAR-BASE-COLOR: #24b400;"> <table width="198" border="0" cellspacing="0" cellpadding="0" align="center"> <tr> <td width="198" nowrap> <input name="text1" type="text" size="20" class=n1 readonly value=这里头别无选择 onclick=turnit(bb) style="color:red;font-family:隶书;font-size:14px;text-align:center; background:yellow;"><input name="Submit" type="text" class="n2" value="" readonly onclick=turnit(bb)> </td> </tr> <tr> <td id=bb style=display:none><div id="Layer1" style="position:absolute; width:198px; height:100px; overflow: scroll; overflow-x:hidden; z-index: 1;SCROLLBAR-ARROW-COLOR: #fc0048; SCROLLBAR-TRACK-COLOR: #242400; SCROLLBAR-BASE-COLOR: #24b400;" class="n1" > <table width="100%" border="0" cellpadding="0" cellspacing="0" id=tb> <tr> <td id=t1 onMouseOver =over(this) onMouseOut =out(this) onclick=sele(this) style="FILTER: progid:DXImageTransform.Microsoft.Gradient(gradientType=1,startColorStr=lime,endColorStr=white);"><img src="http://www.blueidea.com/articleimg/usericon/hubro.gif" align="absmiddle">金翅擘海</td> </tr> <tr> <td id=t2 onMouseOver =over(this) onMouseOut =out(this) onclick=sele(this) style="FILTER: progid:DXImageTransform.Microsoft.Gradient(gradientType=1,startColorStr=brown,endColorStr=white);"><img src="http://www.blueidea.com/articleimg/usericon/hubro.gif" align="absmiddle"><B><font color="#22FF22">知</font><font color="#FF2222">往</font><font color="#001199">观</font><font color="#00fffa">来</font></B></td> </tr> <tr> <td id=t3 onMouseOver =over(this) onMouseOut =out(this) onclick=sele(this) style="FILTER: progid:DXImageTransform.Microsoft.Gradient(gradientType=1,startColorStr=darckblue,endColorStr=white);"><marquee behavior="alternate"><img src="http://www.blueidea.com/articleimg/usericon/hubro.gif" align="absmiddle">海阿洛瓦</marquee></td> </tr> <tr> <td id=t1 onMouseOver =over(this) onMouseOut =out(this) onclick=sele(this) style="FILTER: progid:DXImageTransform.Microsoft.Gradient(gradientType=1,startColorStr=pink,endColorStr=white);"><img src="http://www.blueidea.com/articleimg/usericon/hubro.gif" align="absmiddle">蓝色月光</td> </tr> <tr> <td id=t2 onMouseOver =over(this) onMouseOut =out(this) onclick=sele(this) style="FILTER: progid:DXImageTransform.Microsoft.Gradient(gradientType=1,startColorStr=red,endColorStr=white);"><img src="http://www.blueidea.com/articleimg/usericon/hubro.gif" align="absmiddle"><B><font color="#22FF22">波</font><font color="#FFdd22">希</font><font color="#001199">米</font><font color="#00fffa">亚 </font></B></td> </tr> <tr> <td id=t3 onMouseOver =over(this) onMouseOut =out(this) onclick=sele(this) style="FILTER: progid:DXImageTransform.Microsoft.Gradient(gradientType=1,startColorStr=green,endColorStr=white);"><marquee behavior="alternate"><img src="http://www.blueidea.com/articleimg/usericon/hubro.gif" align="absmiddle">红色黑客</marquee></td> </tr> </table> </div></td> </tr> </table>

? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

可以去掉下拉的小三角,但不可以无边框:

运行代码框

?? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

鼠标移过来select自动下拉:

运行代码框

? [Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]