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javascript override function

JavaScript

Last updated at 2016-05-06Posted at 2016-05-06

var lala = function test(a,b){console.log(arguments)}
lala(1,2) //=>  [1,2]

(function() {
    var _alert = window.alert;                   // <-- Reference
    window.alert = function(str) {
        _alert("fuck you!");
    };
})();

alert("else");

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