JavaScript parsing JSON instance detailed _javascript tips

The example in this article describes the way JavaScript parses JSON. Share to everyone for your reference. The specific methods are as follows:

Download the JSON library
Http://www.json.org/json-zh.html himself for JavaScript.
Or just go down there.
Https://github.com/douglascrockford/JSON-js

PHP generates JSON format

Working with pages

Copy Code code as follows:

<script src= "Scripts/json.js" ></script>
Alert (data.tojsonstring ());

If return false indicates no data

JS Code:

Copy Code code as follows:

Functionshowjson () {
Varuser =
{
"username": "Tom",
"Age": 20,
"Info": {"tel": "123456", "cellphone": "98765"},
"Address":
[
{"City": "Shanghai", "postcode": "201203"},
{"City": "Suzhou", "postcode": "200000"}
]
}

alert (user.username);
alert (user.age);
alert (User.info.cellphone);
alert (user.address[0].city);
alert (User.address[0].postcode);
}

Modify

Copy Code code as follows:

User.username = "Jerry";

You can use Eval to convert JSON characters to object

Copy Code code as follows:

Functionmyeval () {
Varstr = ' {' name ': ' Violet ', ' occupation ': ' character '} ';
VARBJ = eval (' (' + str + ') ');
Alert (obj.tojsonstring ());
}

or use the Parsejson () method

Copy Code code as follows:

Functionmyeval () {
Varstr = ' {' name ': ' Violet ', ' occupation ': ' character '} ';
VARBJ = Str.parsejson ();
Alert (obj.tojsonstring ());
}

I hope this article will help you with your JavaScript programming.