Chandan Sharma

Facebook share is good, simple, lets us share almost everything on web in seconds. But Facebook caches already shared urls/pages for better performance. This causes issues at time when we update the title, picture being shared or the description of the page because facebook still shows the older version of the page.

<script> function getQueryVariable(variable) { var query = window.location.search.substring(1); var vars = query.split("&"); for (var i=0;i<vars.length;i++) { var pair = vars[i].split("="); if (pair[0] == variable) { return pair[1]; } } alert('Query Variable ' + variable + ' not found'); } </script> Now make a request to page.html?x=Hello <script> alert( getQueryVariable("x") ); </script>

You can validate the HTML form using the Jquery with your custom error message. This is very easy to implement and require little knowledge of jquery.