Number Has Decimal Digits

Introduction

In this lab, we will explore the concept of checking if a number has any decimal digits using JavaScript. We will learn how to use the modulo operator to check if a number is divisible by one and return the result. Through practical examples and exercises, we will gain a better understanding of how to implement this concept in our JavaScript programs.

How to Check if a Number Has Decimal Digits

To check if a number has any decimal digits, you can use the modulo operator in JavaScript. Follow these steps:

1. Open the Terminal/SSH and type node to start practicing coding.
2. Use the modulo (%) operator to check if the number is divisible by 1.
3. If the result is not equal to zero, then the number has decimal digits.

Here's an example code to check if a number has decimal digits:

const hasDecimals = (num) => num % 1 !== 0;

You can test the function by calling it with different numbers, like this:

hasDecimals(1); // false
hasDecimals(1.001); // true

Summary

Congratulations! You have completed the Number Has Decimal Digits lab. You can practice more labs in LabEx to improve your skills.