Javascript function hook
Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/443030/1037826/Hookjs.js
// ==UserScript==
// @name Hook.js
// @namespace https://github.com/invobzvr
// @version 0.1
// @description Javascript function hook
// @author invobzvr
// @homepageURL https://github.com/invobzvr/invotoys.js/tree/main/hook.js
// @supportURL https://github.com/invobzvr/invotoys.js/issues
// @license GPL-3.0
// ==/UserScript==
(function () {
const ORI = {};
Function.prototype.hook = function (params) {
typeof params === 'function' && (params = {
scope: window,
before: params,
});
!params.scope && (params.scope = window);
const that = this,
name = that.name;
ORI[name] = that;
params.scope[name] = function () {
if (typeof params.before === 'function') {
const ret = params.before.apply(this, arguments);
if (ret !== undefined) {
return ret;
}
}
let val = that.apply(this, arguments);
if (typeof params.after === 'function') {
const ret = params.after.apply(this, [val, arguments]);
if (ret !== undefined) {
val = ret;
}
}
return val;
}
}
})();