Modified JSON Sheet.

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CSnap 2023-11-19 08:07:38 +00:00
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JSON.md
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@ -32,47 +32,47 @@
}
```
## 1. Introduction to JSON
## Introduction to JSON
- JSON stands for **JavaScript Object Notation**.
- It is a lightweight data interchange format.
- JSON is language-independent and easy for humans to read and write.
- Commonly used for data exchange between a server and web application, as well as for configuration files.
## 2. JSON Data Types
## JSON Data Types
### 2.1 String
### String
- Represents a sequence of characters.
- Enclosed in double quotes.
- Example: `"Hello, World!"`
### 2.2 Number
### Number
- Represents a numerical value (integer or floating-point).
- Example: `42` or `3.14`
### 2.3 Boolean
### Boolean
- Represents a logical value, either `true` or `false`.
### 2.4 Array
### Array
- Ordered list of values.
- Enclosed in square brackets `[]`.
- Example: `[1, 2, "three", true]`
### 2.5 Object
### Object
- Unordered collection of key-value pairs.
- Enclosed in curly braces `{}`.
- Example: `{"name": "John", "age": 30, "city": "New York"}`
### 2.6 Null
### Null
- Represents a null or empty value.
## 3. JSON Syntax
## JSON Syntax
- Data is represented in key-value pairs.
- Keys are always strings and followed by a colon.
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- Objects are enclosed in curly braces `{}`.
- Arrays are enclosed in square brackets `[]`.
## 4. JSON Example
## JSON Example
```json
{
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json.dump(data_to_write, json_file, indent=4)
```
## 6. Accessing JSON Data in JavaScript
## Accessing JSON Data in JavaScript
```javascript
// Assuming jsonString is a JSON string
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console.log(jsonData.address.city); // Outputs: Anytown
```
## 7. Accessing JSON Data in PHP
## Accessing JSON Data in PHP
```php
// Assuming jsonString is a JSON string