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jQuery Strip Harmful Characters from String

By Sam Deering

JavaScript

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jQuery Function to strip out all potentially harmful characters from an input field. Useful for extra security measures of filtering requests to your server before using AJAX for example.

Also see: 10 jQuery Security Plugins

/**
 * Strip out all potentially harmful characters from an input field
 * @param {String} str
 * @returns {String}
 */
filterInputText = function(str)
{
	try
	{
		return str.replace(/s+/gm, ' ').match(/[a-zA-Z0-9(), .!/:%@&?+_=-$]+/gm).join('');
	}
	catch(e)
	{
		return '';
	}
}

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Sam Deering has 15+ years of programming and website development experience. He was a website consultant at Console, ABC News, Flight Centre, Sapient Nitro, and the QLD Government and runs a tech blog with over 1 million views per month. Currently, Sam is the Founder of Crypto News, Australia.

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