当没有元素ID时，单击带有Javascript的链接 [英] Click a link with Javascript when there is no element ID

问题描述

请原谅我，如果这已经回答了某个地方，但我只是找不到我要找的。我在Chrome中使用Greasemonkey for Firefox和Tampermonkey来尝试创建一个Javascipt来改变我与网页的交互方式。加载网页后，我想在后台自动打开新标签页中的链接。每次加载页面时，此链接略有不同。网页中的元素为：

Please forgive me if this has already been answered somewhere but I just can't find what I'm looking for. I'm using Greasemonkey for Firefox and Tampermonkey in Chrome to try to create a Javascipt to change how I interact with a webpage. Upon page load, I'd like to automatically open a link in a new tab in the background. This link is slightly different each time I load the page. The element from the webpage is this:

<a href="/cgi/admin/user/ssh_login/*" target="_blank">SSH</a>

带有*的部分每次都不同。

The part with the * is what's different each time.

那么，如果没有elementID或者至少有一个elementName，那么如何在页面加载时自动点击该链接？

So how can I automatically click that link upon page load if it doesn't have an elementID or at the very least an elementName?

推荐答案

var link = document.querySelector('[href*="/cgi/admin/user/ssh_login/"]');
link.click();

编辑：

背景标签（基于此答案）

var link = document.querySelector('[href*="/cgi/admin/user/ssh_login/"]');
var url = link.getAttribute('href');
openNewBackgroundTab(url);

function openNewBackgroundTab(url){
    var a = document.createElement("a");
    a.href = url;
    var evt = document.createEvent("MouseEvents");
    //the tenth parameter of initMouseEvent sets ctrl key
    evt.initMouseEvent("click", true, true, window, 0, 0, 0, 0, 0,
                                true, false, false, false, 0, null);
    a.dispatchEvent(evt);
}

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