<select name="rk_sslb" id="rk_sslb">
<option value="1">1</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="3">3</option>
</select>怎么用JS删除重复的让它显示为
<select name="rk_sslb" id="rk_sslb">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<option value="1">1</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="3">3</option>
</select>怎么用JS删除重复的让它显示为
<select name="rk_sslb" id="rk_sslb">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<script>window.onload=function(){
var sel = document.forms[0].rk_sslb;
for(i=0;i<sel.options.length;i++){
for(j=i+1;j<sel.options.length;j++){
if(sel.options[i].value==sel.options[j].value) sel.options.remove(j);
}
}
}
</script>
<form>
<select name="rk_sslb" id="rk_sslb">
<option value="1">1 </option>
<option value="1">1 </option>
<option value="2">2 </option>
<option value="3">3 </option>
<option value="3">3 </option>
</select>
</form>
while(c--)
{
for(var i=0; i<c; i++)
{
if(s[i].value == s[c].value)
{
s[c] = null;
break;
}
}
}