文本框类Onchange事件侦听器不能与多个类一起使用 [英] Textbox Class Onchange Event Listener Not Working with Multiple Classes
本文介绍了文本框类Onchange事件侦听器不能与多个类一起使用的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
<input class="item-quantities valid" data-bomid="1939" data-rid="2054" id="AddedItemIDs_1939_" name="AddedItemIDs[1939]" onkeypress="return isNumberKey(event)" type="text" value="7" aria-invalid="false">
无法使它正常工作.我尝试过的...
Can't get this to work. What I've tried...
$('.item-quantities, .valid').change(function () {
alert("we are here");
});
或...
$('.item-quantities.valid').change(function () {
alert("we are here");
});
或...
$('.item-quantities').change(function () {
alert("we are here");
});
...以及其他一些变体.
... and a few other variations.
似乎无法弄清楚如何触发此事件.我一直在玩$('.item-quantities,.valid')的各种变体,但无济于事.正确的方法是什么?
Can't seem to figure out how to trigger this event. I've been playing around with various variations of $('.item-quantities, .valid'), to no avail. What is the correct way to do this?
推荐答案
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<script>
$( document ).ready(function() {
$(".item-quantities").change(function () {
alert("we are here");
});
});
</script>
</head>
<body>
<input id="items" class="item-quantities valid" type="text">
</body>
<html>
这将为课堂做好窍门
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