//定义对象                      //var car = new Object();            //car.colour = ‘red‘;            //car.wheels = 4;            //car.hubcaps = ‘spinning‘;            //car.age = 4;                        //上述代码的简洁写法：            var car = {                colour: ‘red‘,                wheels: 4,                hubcaps: ‘spinning‘,                age: 4            }//定义数组            var testArr = new Array(‘str1‘, ‘str2‘, ‘str3‘, ‘str4‘);            //上述代码的简洁写法：            var testArr = [‘str1‘, ‘str2‘, ‘str3‘, ‘str4‘];   //关联数组            var car = new Array();            car[‘colour‘] = ‘red‘;            car[‘wheels‘] = 4;            car[‘hubcaps‘] = ‘spinning‘;            car[‘age‘] = 4;     
//三重标记法
　　　　　　var direction;
　　　　　　if(x<200){ direction=1;}else{direction=-1}
　　　　　　//用三重标记法可写为
　　　　　　var direction=x<200?1:-1;

       //描述乐队        var band = {                "name": "The Red Hot Chili Peppers",                "members": [                    {                        "name": "zhangsan",                        "role": "lead vocals"                    }, {                        "name": "lisi",                        "role": "bass guitar,trumpet,backing vocals"                    }                ],                "year":"2009"            }