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URL Regex Javascript Validator

URL Regex Javascript Validator

Regex Tester Online tools to learn, build & test Regular Expression (RegEx/RegExp)
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Akto.io

Regular Expression - Documentation

Regular Expression - Documentation

Introduction

URL validation in JavaScript is essential, especially in client-side validation for web forms and applications. JavaScript's built-in regex support enables developers to validate URLs effectively.

What is URL Regex?

The regex pattern for URL validation in JavaScript checks for the protocol, domain, and optional path.

The URL Regex Pattern

  • Pattern: /https?://(?:www\\.)?[a-zA-Z0-9./]+/

  • This pattern matches HTTP and HTTPS URLs and allows for optional 'www.'.

How to Validate URLs in JavaScript?

To validate URLs in JavaScript:


function isValidURL(url) {
    const regex = /https?://(?:www\.)?[a-zA-Z0-9./]+/;
    return regex.test(url);
}

console.log(isValidURL("https://www.example.com")); // true or false

Uses of URL Regex Validation

  1. Client-Side Form Validation: Ensuring URLs entered in forms are correctly formatted.

  2. Data Verification: Validating URLs in client-side scripts and applications.

What next?

JavaScript's regex functionality provides a straightforward method for URL validation, enhancing user experience and data integrity in web applications. Akto's regex validator can be particularly helpful for validating complex or diverse URL patterns.

Frequently asked questions

Why is URL validation important in JavaScript?

What does the URL regex pattern in JavaScript check for?

Can the URL regex pattern handle URLs with or without 'www.'?

How can I validate a URL in JavaScript using the provided code snippet?

What are some common uses of URL regex validation in JavaScript?

URL Regex Javascript Validator

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URL Regex Javascript Validator