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What are the basic data types of JS?

王林
王林Original
2024-02-24 10:36:081264browse

What are the basic data types of JS?

The basic data types of JS are as follows: Number, String, Boolean, Null, and Undefined.

  1. Number: used to represent numbers, including integers and floating point numbers. For example:
let num1 = 10; // 整数
let num2 = 3.14; // 浮点数
  1. String: used to represent text data. Strings need to be enclosed in quotes (single or double quotes). For example:
let str1 = 'Hello'; // 使用单引号
let str2 = "World"; // 使用双引号
  1. Boolean value (Boolean): used to represent true (true) or false (false). For example:
let isTrue = true; // 真
let isFalse = false; // 假
  1. Null: used to represent an empty value. For example:
let emptyValue = null;
  1. Undefined: used to represent a variable that has not been assigned a value. For example:
let undefinedValue;

The above are the basic data types of JS and their corresponding code examples. In actual development, we often use these data types to store and operate different data.

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