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This article introduces the knowledge of "what is the commonly used internal object of JavaScript". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. String object

String object: internal static. When accessing properties and methods, it can be implemented using the (.) operator.

◆ basically uses the format: math object of objectName.prop/methods arithmetic function.

◆ function: provide some self-describing operations except addition, subtraction, multiplication and addition. Such as logarithm, square root, etc.

◆ static: static object

2. Date and time object

◆ function: provides an object about date and time.

◆ static: dynamic, that is, an instance must be created using the New operator.

In addition, JavaScript internal objects include Array objects, browsers, and HTML objects. The objects in HTML object model have the characteristics of general object programming language, such as properties, methods, and events. These objects have a lot to do with the information and interactivity that the web page can provide to users, and the relationship between them can be shown in figure 4-1 below.

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