【Javascript问题系列】

 1 function Box(){}
 2 Box.prototype = {
 3     constructor : function (){
 4         console.log(‘this is constructor‘);
 5     },
 6     name : ‘name‘,
 7     age : 25,
 8     run : function (){
 9         return this.name + this.age + ‘running‘;
10     }
11 }
12 var box = new Box();