After following, you can keep track of his dynamic information in a timely manner
Courses in the relevant section：Object-oriented and prototype[1]
var box=new Object(); box.name='Lee'; box.age=100; box.run=function () { return this.name+this.age+'运行中...'; } alert(box.run()); var box1=box; box1.name='jack'; box1.age=200; box1.run=function () { return this.name+this.age+'运行中...'; } alert(box1.run()); //ps:顺序
2020-04-290个赞
Courses in the relevant section：Three columns_left and right fixed_middle adaptive layout
原因是：float不占DOM空间，可以想象一个三维框架，我们有main,在他前面加一个左右框
2020-05-190个赞
Courses in the relevant section：JavaScript data types
null 表示空的对象指针
2020-03-300个赞
