How to Enable JavaScript in Modern Browsers

Modern browsers support JavaScript and normally enable it by default. If a site says JavaScript is disabled, first check the browser's site permissions and any script-blocking/privacy extensions.

Enable JavaScript in Chrome on desktop Top ↑

1. Open Chrome and select the three-dot menu, then Settings.
2. Open Privacy and security → Site settings.
3. Under Content, choose JavaScript.
4. Select Sites can use JavaScript. You can also manage site-specific allow/block exceptions on the same screen.

You can also enter chrome://settings/content/javascript in Chrome's address bar to open the JavaScript permission page directly.

Enable JavaScript in Microsoft Edge Top ↑

1. Open Edge and select Settings and more (…) → Settings.
2. Open Privacy, search, and services / Site permissions and then All permissions (menu wording can vary slightly by release).
3. Choose JavaScript and make sure JavaScript is allowed.

On managed Windows devices, an administrator policy can lock this setting.

JavaScript in Firefox Top ↑

Firefox has JavaScript built in and enabled by default. If one site reports that JavaScript is blocked, check script-blocking/privacy extensions and site-specific content protection first.

Advanced users can inspect the javascript.enabled preference in about:config, but changing advanced preferences is usually unnecessary for normal browsing.

Enable JavaScript in Safari on Mac Top ↑

1. Open Safari.
2. Choose Safari → Settings → Security.
3. Turn on Enable JavaScript.
4. Reload the affected page.

Enable JavaScript on mobile browsers Top ↑

Safari on iPhone or iPad

1. Open Settings.
2. Go to Apps → Safari → Advanced.
3. Turn on JavaScript.

Chrome on Android

1. Open Chrome and tap the three-dot menu → Settings.
2. Open Site settings → JavaScript.
3. Turn JavaScript on.

Legacy instructions retained from the original tutorial Top ↑

The original page also documented Internet Explorer and Netscape settings. Those browsers are no longer appropriate targets for modern web-development guidance, so their old click paths are retained here only as historical context rather than current instructions.

• Internet Explorer: the former workflow used Internet Options → Security → Custom level → Scripting → Active scripting.
• Netscape Navigator: the former workflow used Preferences → Advanced → Enable JavaScript for Navigator.

Detect JavaScript support → ← JavaScript Basic

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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