id="sel" 的下拉列表框
<select id="sel" onchange="change1()"><option value="aaa">aaaa</option><option value="bbbb">bbbb</option></select>我想实现如下方法:
jquery:
var oldevent = $("#sel")[0].onchange;
$("#sel").unbind("change");
$("#sel").change(function(){
oldevent();
newMethod();
});
------------------------------------------------这种写法是有错误的,不知道要怎么去实现?请高人指点
<select id="sel" onchange="change1()"><option value="aaa">aaaa</option><option value="bbbb">bbbb</option></select>我想实现如下方法:
jquery:
var oldevent = $("#sel")[0].onchange;
$("#sel").unbind("change");
$("#sel").change(function(){
oldevent();
newMethod();
});
------------------------------------------------这种写法是有错误的,不知道要怎么去实现?请高人指点
<script src="js/jquery-1.3.2.js" type="text/javascript"> </script>
<script>
function change1(){
alert("change1")
}
function newMethod(){
alert("newMethod")
}
window.onload=function(){
var oldevent = $("#sel")[0].onchange;
$("#sel")[0].onchange = null;
$("#sel").change(function(){
oldevent();
newMethod();
});
}</script>
<select id="sel" onchange="change1()">
<option value="aaa">aaaa </option>
<option value="bbbb">bbbb </option>
</select>
<script>
function change1(){
alert("change1")
}
function newMethod(){
alert("newMethod")
}
window.onload=function(){
$("#sel").change(function(){
newMethod();
});
}
</script>
<select id="sel" onchange="change1()">
<option value="aaa">aaaa </option>
<option value="bbbb">bbbb </option>
</select>
<script src="NdJquery.js" type="text/javascript"> </script>
<script>
function change1(){
alert("change1")
}
function newMethod(){
alert("newMethod")
}
window.onload=function(){
$("#sel").change(function(){change1()});
var oldevent = $("#sel")[0].onchange;
alert(oldevent);--------------------------------为null
$("#sel").change(function(){
oldevent();
newMethod();
});
}</script>
<select id="sel">
<option value="aaa">aaaa </option>
<option value="bbbb">bbbb </option>
</select>
<script>
function change1(){
alert("change1")
}
function newMethod(){
alert("newMethod")
}
window.onload=function(){
$("#sel").bind("change",change1).bind("change",newMethod);
} </script>
<select id="sel">
<option value="aaa">aaaa </option>
<option value="bbbb">bbbb </option>
</select>