js parses json data, you can use the JSON.parse() method to achieve parsing. The JSON.parse() method can parse a JSON string and convert it into a JavaScript object.
Now we will introduce to you the implementation method of js parsing json data with a simple code example.
The code example is as follows:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>js解析json数据示例</title>
<script>
// 将JSON数据存储在JS变量中
var json = '{"name": "欧阳克", "age": 18, "city": "合肥"}';
// 将JSON编码的字符串转换为JS对象
var obj = JSON.parse(json);
// 从JS对象访问单个值
document.write(obj.name + "<br>");
document.write(obj.age + "<br>");
document.write(obj.city);
</script>
</head>
<body>
</body>
</html>Here we first define a json data and assign it to the json variable, and then JSON.parse() method, convert the json data Convert to js object. Finally, the parsed json data value, which is the js object value, is output to the front desk through the document.write() method.
The parsing result is as shown below:
JSON is usually used to exchange data with the server. When receiving server data, it is usually a string. So we can use the JSON.parse() method to convert the data into a JavaScript object.
Note:
JSON cannot store Date objects. If you need to store a Date object, you need to convert it to a string, and then convert the string to a Date object.
JSON does not allow functions, but you can store functions as strings and later convert the strings to functions.
This article is about the specific method of js parsing json data. It is simple and easy to understand. I hope it will be helpful to friends in need!
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