How to perform four arithmetic operations using JavaScript arithmetic operators

We will explain how to perform four arithmetic operations using arithmetic operators in JavaScript.

Use arithmetic operators to perform four arithmetic operations. 
Arithmetic operators include addition and subtraction.

Types of numbers and arithmetic operators

The types of numbers that can be handled in JavaScript include integers, floating point numbers, and NaN (Not a Number).
Arithmetic operators include addition (+), subtraction (-), multiplication (*), division (/), and finding the remainder (%).

The main arithmetic operators are summarized in a table below.

Four arithmetic operations methods

　You can use numbers and arithmetic operators to add, subtract, multiply, divide, and find remainders.
For example, you can create a formula using numbers and arithmetic operators, such as 2 + 3, and display the results with console.log().

The sample code below uses arithmetic operators to perform four arithmetic operations.

// Assign 10 to variable x and 5 to variable y.
let x = 10;
let y = 5;

// Output the result of x + y
console.log(x + y); // 15

// Output the x - y result
console.log(x - y); // 5

// Output the result of x * y
console.log(x * y); // 50

// Output x / y results
console.log(x / y); // 2

// Output the result of x % y
console.log(x % y); // 0

// Output the result of x ** y
console.log(x ** y); // 100000

How to perform complex operations

JavaScript provides several functions for performing complex operations.

As mentioned above, JavaScript provides functions for performing complex operations. By using them in appropriate combinations, you can easily perform complex operations.

Operations using assignment operators

Assignment operators are used to assign values ​​to variables. The assignment operator specifies the variable on the left side and the value on the right side. Additionally, some assignment operators can perform four arithmetic operations at the same time .

There are the following types of assignment operators:

By using assignment operators, you can write calculation results for variables concisely. You can also combine multiple assignment operators. For example, addition and assignment can be performed at the same time, such as “x += 5”.

Below is a sample code for the assignment operator.

let x = 5; // Assign 5 to variable x

x += 3; // Add 3 to x and substitute (the value of x will be 8)
console.log(x);

x -= 2; // Subtract 2 from x and substitute (x value becomes 6)
console.log(x);

x *= 4; // Multiply x by 4 and substitute (the value of x will be 24)
console.log(x); 

x /= 3; // Divide x by 3 and substitute (x value will be 8)
console.log(x);

　In this code, we first assign 5 to the variable x. We then use the “+=” operator, then the “-=” operator, then the “*=” operator, and finally the “/=” operator on x. By using each operator, the value of variable x is changed concisely. Finally, you can see that the value of variable x is 8.

summary

This time, we learned about the four arithmetic operations used in JavaScript, remainders, and powers. These operators allow you to manipulate numbers.

By using arithmetic operators, you can easily perform four arithmetic operations on numbers. 
By using assignment operators, you can save yourself the trouble of updating values.


Use this article as a reference to master how to use these operators and use them for efficient programming. 
Also, when calculating numbers, it is important to pay attention to the value range and the number of digits after the decimal point.