Javascript hooking a function

Hookers_and_blow.js

Function.prototype.clone = function() {
    var that = this;
    var name = this.name;
    var hooked = function() {
    	console.trace('[' + name + '] Pre hook log: ' + JSON.stringify(arguments));
    	result = that.apply(this, arguments);
    	console.trace('[' + name + '] Post hook log: ' + JSON.stringify(result));
    	return result;
    };
    for(var key in this) {
        if (this.hasOwnProperty(key)) {
            hooked[key] = this[key];
        }
    }
    return hooked;
};


function testing(msg) {
	console.log('This is the message:' + msg);
}


testing('Main');
testing = testing.clone();
testing('Hooked');


// console.log($.get('https://jsonplaceholder.typicode.com/todos/1'));
// $.get = $.get.clone();
// console.log($.get('https://jsonplaceholder.typicode.com/todos/2'));

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