------ice.css--------
.blue {background:#000022;}
.red {background:#220000;}
------test.htm -------
<LINK REL=stylesheet HREF="ice.css">
<script>
function changeStyle(obj,styleName)
{
obj.className = styleName;
}
<p id='a'></p>
<select name='sel' onchange="changeStyle(document.all.a, this.value)">
<option value='blue'>blue</option>
<option value='red'>red</option>
</select>
.blue {background:#000022;}
.red {background:#220000;}
------test.htm -------
<LINK REL=stylesheet HREF="ice.css">
<script>
function changeStyle(obj,styleName)
{
obj.className = styleName;
}
<p id='a'></p>
<select name='sel' onchange="changeStyle(document.all.a, this.value)">
<option value='blue'>blue</option>
<option value='red'>red</option>
</select>
解决方案 »
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