js之 callapply和bind

Posted 2020-12-27 小番茄酱

 

var obj = {
    lenght: 20,
    myLength: function (fn) {
        console.log(this.length)
        fn();
        arguments[0]();
    }
}
var myFn = function () {
    console.log(this.length)
};
var length = 200;
obj.myLength(myFn)