第1个回答 2017-01-06
用js可以做到的
XML/HTML code?
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<select id="branch" onkeypress="trigger(3)" onkeyup="edit(3)" name="branch">
<option value="开发部" selected>开发部</option>
<option value="人事部">人事部</option>
<option value="销售部">销售部</option>
</select>
JavaScript code?
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<script language="javascript">
function trigger(opt){
//opt表示现有可选项的数目
form1.branch.options[opt]=new Option(ok=(form1.branch.options[opt])?
form1.branch.options[opt].innerText+String.fromCharCode(event.keyCode):
String.fromCharCode(event.keyCode),ok)
form1.branch.selectedIndex=opt;
}
function edit(opt){
//opt表示现有可选项的数目
if(form1.branch.options[opt]){
if(event.keyCode==8){
var str=form1.branch.options[opt].innerText;
var len=str.length;
form1.branch.options[opt].innerText=str.substring(0,len-1);
if(form1.branch.options[opt].innerText==""){
form1.branch.remove(opt);
form1.branch.selectedIndex=1;
};
}
if(event.keyCode==32){
form1.branch.options[opt].innerText+=" ";
}
}
}
</script>本回答被网友采纳