如:<select id="ddl_test">
<option>语文</option>
<option>语文</option>
<option>数学</option>
<option>数学</option>
<option>数学</option>
<option>数学</option>
<option>英语</option>
</select>结果:<select id="ddl_test">
<option>语文</option>
<option>数学</option>
<option>英语</option>
</select>
<option>语文</option>
<option>语文</option>
<option>数学</option>
<option>数学</option>
<option>数学</option>
<option>数学</option>
<option>英语</option>
</select>结果:<select id="ddl_test">
<option>语文</option>
<option>数学</option>
<option>英语</option>
</select>
$("#ddl_test option").each(function () {
var text = $(this).text();
if ($("#ddl_test option:contains('" + text + "')").length > 1)
$("#ddl_test option:contains('" + text + "'):gt(0)").remove();
})求优化,求更好的写法大神何在?
<script type="text/javascript">
window.onload = function() {
var opts = document.getElementById('ddl_test').options;
var obj = new Object(), index = 0;
while (index < opts.length) {
if (opts[index].text in obj) opts[index] = null;
else {
obj[opts[index].text] = opts[index].text;
index++;
}
}
obj = null;
}
</script>
$("#ddl_test option").each(function () {
var text = $(this).text()
if( text == optionText )
$(this).remove();
else
optionText = text;
});
你可以在给select绑定数据之前,就去重复项嘛!