JavaScript Basics Operators

1. Operators

Operators, also known as operators, are symbols used to implement functions such as assignment, comparison, and arithmetic operations.

Commonly used operators in JavaScript are:

• Arithmetic operators (+, -, *, /, %)
• Increment and decrement operators (++num, num++, --num, num--)
• Comparison Operators
• Logical operators
• Assignment Operators

Assignment operation:

var a = 1; //Put the value on the right into the variable on the left

Comparison operations:

• Comparison operation - refers to the comparison of the size of numbers: > < >= <=
• The result of the comparison operation must be a Boolean value.

Logical operations:

• Logical operators: && (and) || (or) ! Not/invert
• && and || are used to connect two conditions to form a large conditional judgment result

Increment and decrement operations:

++ Increment symbol

When the ++ symbol encounters the output, the symbol is at the back, so ++ is performed last and the output is performed first

console.log( a++ );

When the ++ symbol encounters the output, the symbol comes first, so ++ is performed first, and then the output

console.log(++a);

The same applies to the minus sign

--Decrement symbol

Summarize

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