var number = 5;
var obj = {
number: 3,
fn: (function() {
var number;
this.number *= 2;
number = number * 2;
number = 3;
return function() {
var num = this.number;
this.number *= 2;
console.log('num',num);
number *= 3;
console.log('number',number,this.number)
}
})()
}
var fn1 = obj.fn;
fn1.call(null);
obj.fn();
console.log(window.number)
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