How to traverse the properties of an object?_javascript tips

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If you need to introduce external Js, you need to refresh to execute <script> function Employee(name, age, title, salary)//括号里的东东是参数,还是属性?如何遍历? { this.name = name; this.age = age; this.title = title; this.salary = salary; this.promotion = promotion; } function promotion(new_title,percent_raise) { var salary_increase = this.salary * percent_raise; this.salary = this.salary + salary_increase; this.title = new_title; } function newdx(){ var aq=new Employee("aq",22,"qigai",3000) alert(aq.name+"的职业是"+aq.title+",薪水是"+aq.salary) aq.promotion("bangzhu",1) alert(aq.name+"的新职业是"+aq.title+",薪水是"+aq.salary) } newdx() </script>]<script> function hutia(){ for(var i=0;i<arguments.length;i++)document.write(arguments[i]+","); document.write(" "); } hutia(1,2,3,4); hutia("haha","hehe", true, false); hutia("Show me the money", "Operation cwal", "Food for thought", "the gathering"); </script>