javascript - 如何找到我的 javascript 中使用的全局变量

Question

<分区>

Answer 1

我做了一个。

var GlobalTester = (function(){
    var fields = {};
    var before = function(w){
        for(var field in w){
            fields[field] = true;
        };
    };

    var after = function(w){
        for(var field in w){
            if(!fields[field]){
                 console.log(field + " has been added");
            }            
        };

    };
    return {before: before, after:after};
}());

GlobalTester.before(window);

// Run your code here        
window.blar = "sdfg";      

GlobalTester.after(window);        
​
​

这将在控制台输出blar has been added