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HTML标记之select的发展史

王朝html/css/js·作者佚名 2006-11-24

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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

<style>

select,option {background-color:lime}

</style>

<option>1

<option>2

<option>不是一样的嘛</select>

<style>

select,option {background-color:lime;font-family:华文行楷;color:red;}

</style>

</select>

[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

i=1;

</script>

</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

</span>

</form>

<html>

<head>

<title>Untitled Document</title>

<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>

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>

addText("name1","a");

add("1234",0);

addText("name1","a");

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