如何动态更改onClick处理程序? [英] How to change onClick handler dynamically?
问题描述
我确信有一百万篇关于这方面的文章,但令人惊讶的是我很难找到一些东西。
我有一个简单的脚本,用于在初始化时为< A>
链接设置onClick处理程序
当我立即运行这个 时,得到一个'foo'提醒框,我希望只在点击时得到提醒在链接。
我做错了什么愚蠢的事情? (我试过点击=和onClick =)...
< script language =javascript>
函数init(){
document.getElementById(foo)。click = new function(){alert('foo'); };
}
< / script>
< body onload =init()>
< a id =foohref =#>点击运行foo< / a>
< / body>
编辑: I将我接受的答案更改为jQuery答案。 'MárÖrlygsson'的答案在技术上是正确的答案到我原来的问题(点击
应该是 onclick
和新
应该被删除),但是我强烈建议任何人在他们的代码中直接使用document.getElementById(...)并使用 jQuery 。
b
$ b
$('#foo')。click(function(){alert('foo');});
或者如果您不希望它跟随链接href:
$('#foo')。click(function(){alert('foo'); return false;});
I'm sure there are a million posts about this out there, but surprisingly I'm having trouble finding something.
I have a simple script where I want to set the onClick handler for an <A>
link on initialization of the page.
When I run this I immediately get a 'foo' alert box where I expected to only get an alert when I click on the link.
What stupid thing am I doing wrong? (I've tried click= and onClick=)...
<script language="javascript">
function init(){
document.getElementById("foo").click = new function() { alert('foo'); };
}
</script>
<body onload="init()">
<a id="foo" href=#>Click to run foo</a>
</body>
Edit: I changed my accepted answer to a jQuery answer. The answer by 'Már Örlygsson' is technically the correct answer to my original question (click
should be onclick
and new
should be removed) but I strongly discourage anyone from using 'document.getElementById(...) directly in their code - and to use jQuery instead.
jQuery:
$('#foo').click(function() { alert('foo'); });
Or if you don't want it to follow the link href:
$('#foo').click(function() { alert('foo'); return false; });
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