How to usea Library (validator.js) in Javascript
To check if a string contains a valid URL format using the validator.js library, first install the library using npm. Then, use the validator.isURL() method to validate the URL.
npm install validator
Example:
const validator = require('validator');
function isValidURL(str) {
return validator.isURL(str);
}
console.log(isValidURL("https://www.w3wiki.org/")); // true
console.log(isValidURL("example")); // false
Output
true
false
How to Check if a String Contains a Valid URL Format in JavaScript ?
A string containing a valid URL format adheres to standard conventions, comprising a scheme (e.g., “http://” or “https://”), domain, and optionally, a path, query parameters, and fragments. Ensuring this format is crucial for data consistency and accurate handling of URLs in applications.
There are several methods that can be used to check if a string contains a valid URL format in JavaScript.
Table of Content
- Using Regular Expressions
- Using URL Constructor
- Using the URL Object Available in Modern Browsers
- Using a Library (validator.js)
We will explore all the above methods along with their basic implementation with the help of examples.
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