求助！
//更新下拉列表function updateOptions(eSelect,ids,names){
//清空下拉框
eSelect.length=0;
var iLength = ids.length ;
var iLoop = 0;
eSelect.options[0]=new Option("","");
for(iLoop=0;iLoop<iLength;iLoop++){
var id = ids[iLoop];
var name = names[iLoop];
eSelect.options[eSelect.length]=new Option(name,id);
}
}
eSelect＝document.getElementsByName("cityId");
它提示eSelect.length=0; 尚未实现？
有经验的帮解决下
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ids iLoop var eSelect
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<xhtml>
<head>
<script>
function updateOptions(eSelect) {
eSelect.length = 0;
for(i = 0; i < 10; i++) {
var id = "ID" + i;
var name = "Name" + i;
eSelect.options[eSelect.length] = new Option(name,id);
}
}
</script>
</head>
<body>
<select name="cityId">
</select>
<script>
eSelect=document.getElementsByName("cityId")[0];
updateOptions(eSelect);
</script>
</body>
</xhtml>
----------------解决方案--------------------------------------------------------
谢谢了 我直接在那方法里从得一 次
----------------解决方案--------------------------------------------------------