上午的<select id=a1 onchange=del(this)>
</select>
<script>
var newArr=new Array('theFirst','theSecond');
var newOption1 = new Option(newArr[0],newArr[0]);
var newOption2 = new Option(newArr[1],newArr[1]);
document.all.a1.add(newOption1,0);
document.all.a1.add(newOption2,1);function del(e){
e.remove(e.selectedIndex) ;
}
</script>
</select>
<script>
var newArr=new Array('theFirst','theSecond');
var newOption1 = new Option(newArr[0],newArr[0]);
var newOption2 = new Option(newArr[1],newArr[1]);
document.all.a1.add(newOption1,0);
document.all.a1.add(newOption2,1);function del(e){
e.remove(e.selectedIndex) ;
}
</script>
//这是添加一个Option的函数
var el;
el = document.createElement("OPTION");
el.text = text;
el.value = value;
fld.options.add(el);
}
function clearOptions(sel){
//清除某个Select的全部Option
var selLen=sel.length;
for (i=0;i<selLen;i++){
sel.remove(0);
}
}
2. document.all.a1.options[nIndex] = null;