Detailed explanation of JSON object definition and value implementation steps in JS-JS Tutorial-php.cn

This time I will bring you a detailed explanation of the steps for JSON object definition and value implementation in JS. What are theprecautionsfor JSON object definition and value implementation in JS. The following is a practical case, let’s take a look. one time.

1.JSON (JavaScriptObject Notation) is a simple data format that is more lightweight than xml. JSON is a native JavaScript format, which means that no special API or toolkit is required to process JSON data in JavaScript.

The rules of JSON are simple: an object is an unordered collection of "name:value" pairs. An object starts with "{" (left bracket) and ends with "}" (right bracket). Each "name" is followed by a ":" (colon); "name/value" pairs are separated by "," (comma).

The rules are as follows:

1) Mapping is represented by colon (":"). Name: Value
2) Parallel data are separated by commas (","). Name 1: value 1, name 2: value 2
3) The mapped collection (object) is represented by curly brackets ("{}"). {Name 1: Value 1, Name 2: Value 2}
4) The collection (array) of parallel data is represented by square brackets ("[]").
[
{Name 1: value, name 2: value 2},
{Name 1: value, name 2: value 2}
]
5) The types that element values can have ：string, number, object, array, true, false, null

Five writing methods in 2.json:

1) Traditional way to store data and call data

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2) The first style:

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3) The second style:

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4) The third style:

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5) The fourth style:

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6) The fifth style:

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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!