如何从另一个网站通过ID获取Element [英] How to get Element by Id from Another website

问题描述

我想从另一个站点获取div的ID.

I would like to get the content of div by its ID from another site.

比方说，我有一个网站，我想从该URL中获取div内具有"mainbar" ID的所有内容- https://stackoverflow.com/questions

Let's say, I have a site and I want to get everything that is inside of div with the id of "mainbar" from this URL - https://stackoverflow.com/questions

您能告诉我，如何使用本机javascript或jquery制作它吗?

Could you tell me, how to make it with native javascript or jquery?

谢谢.

推荐答案

如果您可以访问其他站点并且存在Access-Control-Allow-Origin标头，则可以像这样使用jQuery:

If you have access to the other site and the Access-Control-Allow-Origin header is present, then jQuery can be used like this:

$.get('https://stackoverflow.com/questions').then(function (html) {
    // Success response
    var $mainbar = $(html).find('#mainbar');
    document.write($mainbar.html());
}, function () {
    // Error response
    document.write('Access denied');
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

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