getElementByClass可以安全地在浏览器（如getElementById）之间使用吗？ [英] Is getElementByClass safe to use across browsers like getElementById?

问题描述

getElementByClass可以安全地在诸如getElementById之类的浏览器中使用？

Is getElementByClass safe to use across browsers like getElementById?

更新
目前正在使用：

Update Currently using:

 window.opener.document.getElementById

But I want to reference the object by classname (there will be only 1 element with that classname).

推荐答案

但是我想通过classname引用对象（只有该元素与该类名相同） code> getElementsByClassName 不幸的是不可靠的跨浏览器。根据 Quirksmode 。

getElementsByClassName is unfortunately not reliable cross-browser. It's currently supported by the most recent versions of Firefox, Opera, Safari, and Chrome, but not at all in Internet Explorer or Konqueror, according to Quirksmode.

如果要跨浏览器使用，您必须提供自己的对于那些不支持它们的浏览器的实现，像PPK的博客中一样：

If you want to use it cross-browser, you'll have to have to provide your own implementation for those browsers that don't support it, like in PPK's blog:

function getElementsByClassName(node,classname) {
    if (node.getElementsByClassName)
        return node.getElementsByClassName(classname);
    else {
        // your custom function
    }
}

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