<select name="zxc" onchange="Change(value);">
<option selected value="1">A</option>
<option value="2">B</option>
<option value="3">C</option>
<option value="4">D</option>
</select>
<span id=mm style="display: none">%</span>function Change(v)
{
mm.style.display = v=="4" ? "" : "none";
}
<option selected value="1">A</option>
<option value="2">B</option>
<option value="3">C</option>
<option value="4">D</option>
</select>
<span id=mm style="display: none">%</span>function Change(v)
{
mm.style.display = v=="4" ? "" : "none";
}
解决方案 »
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