JavaScript如何从listbox里同时删除多个项目

<table> 
<tr> 
<td align="center"> 
<select id="lsbox" name="lsbox" size="10" multiple> 
<option value="1">India</option> 
<option value="2">United States</option> 
<option value="3">China</option> 
<option value="4">Italy</option> 
<option value="5">Germany</option> 
<option value="6">Canada</option> 
<option value="7">France</option> 
<option value="8">United Kingdom</option> 
</select> 
</td> 
</tr> 
<tr> 
<td align="center"> 
<button onclick="listbox_remove('lsbox');">Delete</button> 
<button onclick="window.location.reload();">Reset</button> 
</td> 
</tr> 
</table> 
 
javascript代码如下： 
 代码如下:

function listbox_remove(sourceID) { 
//get the listbox object from id. 
var src = document.getElementById(sourceID); 

//iterate through each option of the listbox 
for(var count= src.options.length-1; count >= 0; count--) { 

//if the option is selected, delete the option 
if(src.options[count].selected == true) { 

try { 
src.remove(count, null); 

} catch(error) { 

src.remove(count); 
} 
} 
} 
} 
 
当然，如果使用jQuery来删除，那就方便了，一句话就搞定了 
 代码如下:

$("#sourceId").find('option:selected').remove();