如何从 Greasemonkey 脚本拦截 XMLHttpRequests? [英] How can I intercept XMLHttpRequests from a Greasemonkey script?

问题描述

我想使用 Greasemonkey 捕获 AJAX 请求的内容.

I would like to capture the contents of AJAX requests using Greasemonkey.

有人知道怎么做吗?

推荐答案

接受的答案几乎是正确的，但可以稍微改进一下:

The accepted answer is almost correct, but it could use a slight improvement:

(function(open) {
    XMLHttpRequest.prototype.open = function() {
        this.addEventListener("readystatechange", function() {
            console.log(this.readyState);
        }, false);
        open.apply(this, arguments);
    };
})(XMLHttpRequest.prototype.open);

更喜欢使用 apply + 参数而不是调用，因为这样您就不必明确知道提供给 open 的所有参数，这些参数可能会改变！

Prefer using apply + arguments over call because then you don't have to explicitly know all the arguments being given to open which could change!

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