Introduction to JavaScript objects

JavaScript objects can be categorized into three main categories:

1.javascript local objects and built-in objects

2. Browser object (BOM)

3. Document Object (DOM)

One: JavaScript built-in objects

1.Array (Array object)

2.Number (Digital object)

3.String (String object)

4.Boolean (Boolean object)

5.Math (Math object)

6.REGEXP (Regular object)

7.Date (Date Time object)

Two: Browser object (BOM)

1.Window objects:

2.Screen object: Can get information about the screen

3.Navigator: Can get information about the browser

4.history: Browser's history information

5.Location: Information for the current URL

Three: Document Object (DOM)

1.document object: Represents the root of the entire document

Each label in the 2.document element:html

3.document Attribute: Property Object

4.document Event: Events Object

Introduction to JavaScript objects