1.  //单条  
    2. var  cheng = {
    3.     "name":"zhangsan",
    4.     "age":18,
    5.     "sex":"男",
    6.     "like":true
    7. }
    9. //键的双引号可以省略
    1. //多个 “ [] ”
    2. var myfamily = [
    3.              {
    4.             relation:"dady",
    5.             like:"唱歌",
    6.             location:"广东"
    7.         },{
    8.             relation:"mom",
    9.             like:"看剧",
    10.             location:"江西"
    11.         },{
    12.             relation:"my",
    13.             like:"timi",
    14.             location:"湖北"
    15.         }
    16.         ]
    1. /* 1.读取对象的属性 */
    2.  /* .表示的意思 */
    3.  console.log(li.name)
    4.  console.log(li.age)
    5.  /* 2.给对象添加属性 */
    6.  li.sex = "女";
    7.  console.log(li)