jQuery Select 器的多个参数

发布于04月20日

我只是看着jQueryUI按钮插件，注意到了这一点

$("button, input:submit, a", ".demo").button();

I never seen something like this. Is this like multiple selects in one jQuery selector?

推荐答案

第二个参数(在您的示例中为".demo")是context，基本上您的 Select 器仅限于匹配已确定的context的后代:

$(expr, context)

等同于使用find方法:

$(context).find(expr)

请查看jQuery function人的文档:

Select 器上下文

默认情况下， Select 器执行

$('div.foo').click(function() {
  $('span', this).addClass('bar');
  // it will find span elements that are
  // descendants of the clicked element (this)
});

Also notice that the selector you post "button, input:submit, a", is called Multiple Selector, and there you can specify any number of selectors to combine into a single result, just by separating them by a comma.