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In my opinion alerts should only be used html error message examples if the browser doesn't support a better way of displaying html error message color form error messages. Instead, the W3C DOM allows us to write error messages next to how to display error message in html form the form field they apply to. This is clearly the superior method, so we only use alerts if the browser doesn't support advanced scripting. Example http://www.w3schools.com/bootstrap/bootstrap_alerts.asp Try this example form. Every field is required. In addition, I check if the "email" field contains a "@". If it doesn't, the value is not a valid email address and an error message is shown. name address city e-mail The script var W3CDOM = (document.getElementsByTagName && document.createElement); window.onload http://www.quirksmode.org/dom/error.html = function () { document.forms[0].onsubmit = function () { return validate() } } function validate() { validForm = true; firstError = null; errorstring = ''; var x = document.forms[0].elements; for (var i=0;i here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About http://stackoverflow.com/questions/29701738/showing-error-message-in-html-form-using-php-and-javascript Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Showing error message in html form error message using php and javascript up vote -1 down vote favorite My html: