Top 5 JavaScript Security Best Practices for 2024

Nipuni Arunodi
5 min readSep 30, 2024

JavaScript is one of the most widely used programming languages for web development, making it a prime target for security threats. With the evolution of web technologies and the increasing sophistication of attacks, maintaining robust security practices is more critical than ever. In 2024, security best practices for JavaScript will remain essential for ensuring that applications are secure from common vulnerabilities.

This article discuss the five most important JavaScript security best practices to implement in 2024.

1. Sanitize and Validate User Inputs

One of the most significant security risks in web applications is untrusted user input. Failing to properly sanitize and validate user inputs can lead to injection attacks, such as Cross-Site Scripting (XSS) or SQL Injection. These attacks allow malicious users to execute arbitrary code or retrieve sensitive information.

Best Practice:

In 2024, it’s crucial to implement input validation both on the client side and the server side. Client-side validation is useful for user experience, but server-side validation ensures that incoming data meets security requirements even if the client-side check is bypassed.

Use cases:

--

--

No responses yet