JavaScript
Article
By Sam Deering

jQuery Strip Harmful Characters from String

By Sam Deering

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 '';
	}
}
Recommended
Sponsors
Get the latest in JavaScript, once a week, for free.