标签：tree home name javascrip undefined number rip one new
JSON 数据如下：
{ "name": "mkyong", "age": 30, "address": { "streetAddress": "88 8nd Street", "city": "New York" }, "phoneNumber": [ { "type": "home", "number": "111 111-1111" }, { "type": "fax", "number": "222 222-2222" } ] }
要在JavaScript中访问JSON对象，使用 JSON.parse() 解析它，并通过“.”或“[]”访问。
JS 代码如下：
<script>
var data = ‘{"name": "mkyong","age": 30,"address": {"streetAddress": "88 8nd Street","city": "New York"},"phoneNumber": [{"type": "home","number": "111 111-1111"},{"type": "fax","number": "222 222-2222"}]}‘;
var json = JSON.parse(data);
alert(json["name"]); //mkyong
alert(json.name); //mkyong
alert(json.address.streetAddress); //88 8nd Street
alert(json["address"].city); //New York
alert(json.phoneNumber[0].number); //111 111-1111
alert(json.phoneNumber[1].type); //fax
alert(json.phoneNumber.number); //undefined
</script>
标签：tree home name javascrip undefined number rip one new
原文地址：https://www.cnblogs.com/ryanzheng/p/11324555.html
