A jQuery plugin that adds a static isNativeFunction method to determine if an object is actually a browser's native host object function. This plugin was inspired by jQuery core bug #4536.

Check the jQuery Plugins Registry for the latest published version of this plugin!

You can also download the production version or the development version from GitHub.

In your web page:

<script src="jquery.js"></script>
<script src="dist/jquery.isNativeFunction.min.js"></script>
<script>
    jQuery.isNativeFunction(window.alert);  // true
</script>

// Confirm that the `window.alert` function is a native host object function
jQuery.isNativeFunction(window.alert);  // true

// Confirm that the `jQuery` function is NOT a native host object function
jQuery.isNativeFunction(jQuery);  // false

Works 100% with jQuery versions:

• 1.0.x
• 1.1.x
• 1.2.x
• 1.3.x
• 1.4.x
• 1.5.x
• 1.6.x
• 1.7.x
• 1.8.x
• 1.9.x
• 1.10.x
• 2.0.x

(Coming soon)

• 1.0.1: Published to the jQuery Plugins Registry on 2013-07-16.
  • Updated plugin description in the manifest.
  • Added Travis test config for Node.js 0.10.x.
• 1.0.0: Published to the jQuery Plugins Registry on 2013-07-16.
  • Initial release.