Explanation on Operator

In JavaScript, an operator is a symbol that instructs the computer to perform a specific mathematical or logical operation on one or more values ​​(called operands). For example, the operator is used to add two numbers, while the && operator is used to check if both conditions are true.

JavaScript contains a variety of operators, each with its own specific purpose. Some of the most commonly used operators include:

• Arithmetic operators: are used to perform mathematical operations such as addition ( ), subtraction (-), multiplication (*) and division (/).
• Comparison operator: is used to compare two values, such as > (greater than), < (less than), == (equal to), != (not equal to), >= ( greater than or equal to) and <= (less than or equal to).
• Logical operators: are used to combine multiple conditions, such as && (AND), || (OR), and ! (Not).
• Assignment operators: are used to assign values ​​to variables, such as = (equal), = (add and assign), and -= (subtract and assign).

Here are some examples of how to use operators in JavaScript:

// 算术运算符
let x = 5 + 3; // x 现在是 8
let y = 10 - 2; // y 现在是 8
let z = 4 * 2; // z 现在是 8

// 比较运算符
let a = 5 > 3; // a 现在是 true
let b = 10 < 20; // b 现在是 true

// 逻辑运算符
let c = true && false; // c 现在是 false
let d = true || false; // d 现在是 true

// 赋值运算符
let e = 10;
e += 5; // e 现在是 15
e -= 2; // e 现在是 13
The 
 operator is an integral part of the JavaScript language and is used in almost every JavaScript program. 

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