json学习笔记

{
"key1":"text",//值是字符串文本
"key2":-123.456,//值是整型、字符型、负数
"key3":{//值是json对象
"attribute":"height",//json对象内的键值对
"age":18
},
"key4":[1,2,3,4],//值是整型数组
"key5":["a","b","c","d"],//值是字符型数组
"key6":[{},{},{}],//值是json型数组
"key7":null，//值为空
"key8":true//值为布尔类型
}