Jquery绑定事件在选定的类 [英] Jquery binding event on selected class

问题描述

是否可以在jQuery中将事件绑定到具有某个类的一组控件？在我看来，它不能。我有一点谷歌，所有这些都与事件无关。以下是我的代码如何 -

Is it achievable in jquery to bind an event to a group of control that has certain class? It seems to me, it can't. I google a bit and all that came up are nothing to do with events. Here's how my code looks -

$('.numonly').bind('keypress',function(event){
    if (event.which > 31 && (event.which < 48 || event.which > 57)) return false;
});

推荐答案

你的代码应该工作，这里是一个例子行动： http://jsfiddle.net/g3GsE/

Your code should work, here's an example of it in action: http://jsfiddle.net/g3GsE/

确保您的代码是这样包装的，所以直到 document.ready 才执行：

Make sure that your code is wrapped like this so it doesn't execute until document.ready:

$(function() {
  $('.numonly').bind('keypress',function(event){
    if (event.which > 31 && (event.which < 48 || event.which > 57)) return false;
  });
});

没有这个，它会立即执行， class =numonly / code>元素不会在那里找到...代码需要等到document.ready，所以它在元素之后触发，所以选择器找到它们。

Without this, it would execute immediately and the class="numonly" elements won't be there to find yet...the code needs to wait until document.ready so it fires after the elements are there, so the selector finds them.

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