事件绑定动态创建的元素? [英] Event binding on dynamically created elements?
问题描述
.hover
事件给他们做一点点与他们的 这种情况发生在页面准备就绪并且工作正常。
我遇到的问题是,在初始循环后,通过Ajax或DOM添加的任何选择框都不会有事件绑定。
我发现这个插件( jQuery实时查询插件),但在我添加之前另一个5k到我的页面与一个插件,我想看看有没有人知道一个方法来做到这一点,或者直接使用jQuery或另一个选项。
截至jQuery 1.7 ,您应该使用 jQuery.fn.on
:
$(staticAncestors).on(eventName,dynami cChild,function(){});
此前建议的方法是使用 live()
:
$(selector).live(eventName,function(){});
但是, live()
已被弃用1.7( on()
,并在1.9中完全删除。 live()
签名:
$(selector).live eventName,function(){});
...可以替换为以下 on()
签名:
$(document).on(eventName,selector,function(){});
例如,如果您的页面动态创建元素通过 dosomething
,您可以将事件绑定到已存在的父类,通常是文档
。
$(document).on('mouseover mouseout','.dosomething',function(){
//你想要什么当鼠标悬停和鼠标移动
//发生在匹配'.dosomething'
}的元素时发生;
事件绑定时存在的任何父对象都可以。例如
$('。buttons')。on('click','button',function(){
//在这里做某事
});
将适用于
< div class =buttons>
<! - < button> s,动态生成并在此添加 - >
< / div>
I have a bit of code where I am looping through all the select boxes on a page and binding a .hover
event to them to do a bit of twiddling with their width on mouse on/off
.
This happens on page ready and works just fine.
The problem I have is that any select boxes I add via Ajax or DOM after the initial loop won't have the event bound.
I have found this plugin (jQuery Live Query Plugin), but before I add another 5k to my pages with a plugin, I want to see if anyone knows a way to do this, either with jQuery directly or by another option.
As of jQuery 1.7 you should use jQuery.fn.on
:
$(staticAncestors).on(eventName, dynamicChild, function() {});
Prior to this, the recommended approach was to use live()
:
$(selector).live( eventName, function(){} );
However, live()
was deprecated in 1.7 in favour of on()
, and completely removed in 1.9. The live()
signature:
$(selector).live( eventName, function(){} );
... can be replaced with the following on()
signature:
$(document).on( eventName, selector, function(){} );
For example, if your page was dynamically creating elements with the class name dosomething
you would bind the event to a parent which already exists, often document
.
$(document).on('mouseover mouseout', '.dosomething', function(){
// what you want to happen when mouseover and mouseout
// occurs on elements that match '.dosomething'
});
Any parent that exists at the time the event is bound is fine. For example
$('.buttons').on('click', 'button', function(){
// do something here
});
would apply to
<div class="buttons">
<!-- <button>s that are generated dynamically and added here -->
</div>
这篇关于事件绑定动态创建的元素?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!