April 23, 2022

How to Check if String has More Than One Word in Javascript

By Krishnaa JavaScript Questions 0 Comments

In this tutorial, you will learn how to check if string has more than one word in javascript. An English sentence is a combination of plain text and space. Plain text consists of meaningful words which are created using the English letters but are separated by space. For a newbie developer, it can be a bit tricky to find if the string has more than one word.

There are numerous ways to check if a string has more than one word. But for the sake of simplicity, we will use split() method, length property and ternary operator (?). The length property returns the length of the string. If the string is empty, then it will return 0. The split() method splits a given string into multiple substrings and return an array of those substrings.

In the following example, we have one global variable that holds a string. Upon click of a button, we will check if the string has more than one word and display it on the screen. Please have a look over the code example and the steps given below.

HTML & CSS

We have 3 elements in the HTML file (div, button, and h1). The div element is just a wrapper for the rest of the elements.
The innerText for the button element is “Get” and for the h1 element, it is “Result”.
We have done some basic styling using CSS and added the link to our style.css stylesheet inside the head element.
We have also included our javascript file script.js with a script tag at the bottom.

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <link rel="stylesheet" href="style.css">
  <title>Document</title>
</head>

<body>

  <div class="container">    
    <button>Get</button>
    <h1>Result</h1>
  </div>

  <script src="script.js"></script>
</body>

</html>

.container {        
    text-align: center;
}

button {
  margin-top: 10px;
  padding: 10px 20px;
}

Javascript

We have selected the button element and h1 element using the document.querySelector() method and stored them in btnGet and output variables respectively.
We have a global variable myString which holds a string as its value.
We have attached a click event listener to the button element.
In the event handler function, we are calling split() method and passing a space as a parameter. As a result, we will get an array of substrings in return.
We are using length property to get the length of the array and checking if it is greater than 1. If the check returns true, that means the string has more than one word.
Depending upon the result of the check, we are assigning "Yes" or "No" to the result variable.
We are displaying the result in the h1 element using the innerText property.

let btnGet = document.querySelector("button");
let output = document.querySelector("h1");

let myString = "Maggie just bought a new car.";

btnGet.addEventListener("click", () => {  
  let result = myString.split(" ").length > 1 ? "Yes" : "No";
  output.innerText = result;
});

You May Also Like: