是否可以在Chrome中从控制台加载外部javascript文件（从URL）？

Question

I want to semi-automate some actions.

I want the JQuery library to be loaded in a certain page, to allow me to easier manipulate/query the DOM, to get some data. The page is not under my control, but I don't want to write a crawler for it....I just want to manually crawl the data, from the console.

Can I somehow make my console download and execute the script here "" https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js "?

If not, why not?

Answer 1

You can make your console download and execute scripts by appending a script tag with the src of the script.

var scriptTag = document.createElement("script");
scriptTag.setAttribute("src", "https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js");
document.body.appendChild(scriptTag);

Answer 2

Yes, you can. Paste this in your console:

    var script = document.createElement('script');
script.onload = function() {
  alert("Script loaded and ready");
};
script.src = "https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(script);

From here: document.createElement("script") synchronously