When you set the
innerHTML property of the
Select object, the changes do not take effect correctly.
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If you must use
innerHTML, a workaround is to use a
Div object to wrap the SELECT element and then set the
innerHTML property for the
Div object. For example:
<html>
<head>
<title>My Example</title>
<script language="Javascript">
var origDivHTML;
function init()
{
origDivHTML = myDiv.innerHTML;
}
function setValues()
{
var oldinnerHTML = "your original innerHTML: " + yourDiv.innerHTML ;
alert(oldinnerHTML);
yourDiv.innerHTML = origDivHTML;
var curinnerHTML = "your current innerHTML: " + yourDiv.innerHTML ;
alert(curinnerHTML);
}
</script>
</head>
<body onload="init()">
<div id="myDiv">
<select name="firstSelect" size="1" >
<option>11111</option>
<option>22222</option>
<option>33333</option>
</select>
</div>
<div id="yourDiv">
<select name="secondSelect" size="1" >
<option>aaaa</option>
<option>bbbb</option>
<option>cccc</option>
</select>
</div>
<button onclick = "setValues();">click me to set the values</button>
</body>
</html>
Ideally, you should use the
options collection to add the options of a SELECT element. The following code shows three ways to programmatically add options to the SELECT element:
<HTML>
<HEAD>
<TITLE></TITLE>
</HEAD>
<BODY>
<script>
function fill_select1() {
for(var i=0; i < 100; i++) {
select1.options[i] = new Option(i,i);
}
}
function fill_select2() {
var sOpts = "<SELECT>";
for (var i=0;i<100;i++)
{
sOpts += '<OPTION VALUE="' + i + '">' + i + '</OPTION>\n';
}
select2.outerHTML = sOpts + "</SELECT>";
}
function fill_select3() {
for(var i=0; i < 100; i++) {
var oOption = document.createElement("OPTION");
oOption.text="Option: " + i;
oOption.value=i;
document.all.select3.add(oOption)
}
}
</script>
<H2>SELECT Box Population</H2>
<SELECT id=select1 name=select1></SELECT>
<INPUT type="button" value="Populate with options list" id=button1
name=button1 onclick="fill_select1();"><BR><BR>
<SELECT id=select2 name=select2></SELECT>
<INPUT type="button" value="Populate with outerHTML" id=button2
name=button2 onclick="fill_select2();"><BR><BR>
<SELECT id=select3 name=select3></SELECT>
<INPUT type="button" value="Populate with using createElement" id=button3
name=button3 onclick="fill_select3();">
</BODY>
</HTML>
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Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article.
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Steps to Reproduce Behavior
The following sample code illustrates this bug:
<html>
<head>
<script language="JavaScript">
function test()
{
var objSelect = document.all.idSelect;
var strOrigHTML = objSelect.innerHTML;
objSelect.innerHTML = strOrigHTML;
var strNewHTML = objSelect.innerHTML;
if (strNewHTML == strOrigHTML)
alert("Test passed.");
else
alert("Test failed: innerHTML = " + strNewHTML );
}
</script>
</head>
<body>
<select id="idSelect">
<option value="line1">Option 1</option>
<option value="line2">Option 2</option>
</select>
<input type="button" value="test" onClick="test()" />
</body>
</html>
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For more information on the
Select object, see the following article on the Microsoft Developer Network (MSDN):
For more information on the
options collection, see the following article on MSDN:
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