Verify an image URL in JavaScript

In this short article, we will show you how to verify an image URL in JavaScript.

Here, we will use the Regular Expression to validate the image url using JavaScript.

Checkout more articles on JavaScript

• Navigator object in JavaScript
• Math functions in JavaScript
• Methods of Promises in JavaScript
• 7 JavaScript One-Liners that you should know
• console methods in JavaScript

Use the following function to check the extension using a regular expression.

Function

function checkURL(url) {
  if (typeof url !== 'string') return false;
  return (url.match(/\.(jpg|jpeg|gif|png)$/) != null);
}

Here we have validated the extension such as `jpg`, `jpeg`, `gif`, and `png`. This function will return the boolean value.

Output

checkURL('cluemediator.com'); // Output: false
checkURL('https://xyz.com/abc.png'); // Output: true
checkURL('http://abc.com/xyz.gif'); // Output: true

In the upcoming article, we will show you how to check if an image exists from a URL.

That’s it for today.
Thank you for reading. Happy Coding..!! 🙂