Hi Friends 👋,

Welcome To Infinitbility! ❤️

Today, I’m going to show you how do you check if a string is a substring of another string in javascript, here I will use the javascript includes() method to check contains a substring or not.

The includes() method determines whether an array includes a certain value among its entries, returning true or false as appropriate.

Let’s start the today’s tutorial How to check if a string is a substring of another string in javascript?

To check string contains a specific word or not, we have to just pass the word in the includes() method, and then it will return true or false.

Here, we will do

  1. Create a variable and assign some value to it
  2. Use the includes() method to check string contains sub string or not
  3. Console output substring contain or not
// Create a variable and assign some value on it
const slogan = "We have the ability to build infinite way for us.";

// Use the `includes()` method to check string contain sub string or not
// Console output substring contain or not
if(slogan.includes("infinite")){
  console.log("SubString contain");
} else {
  console.log("SubString not contain");
}

When running the above program it should console 'SubString contain' in the log. let’s check the output.

javascript, check if a string is a substring of another string example
javascript, check if a string is a substring of another string example

I hope it’s help you, All the best 👍.