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An example of JavaScript to prevent repeated form submissions
<! DOCTYPE html>
<meta http-equiv= "Content-Type" content= "text/html; charset=UTF-8" /> <Title> prevent repeated forms from being submitted </title> <style> #refresh{ display: none; width:200px; height:20px; background-color: #ff0; } </style> <script> var inprocess = false ; window.onload = function (){ document.forms[ "picker" ].onsubmit = validateSubmit; document.getElementById( "refresh" ).onclick = startOver; } function validateSubmit () { // Prevent repeated forms from being submitted if (inprocess) return ; inprocess = true ; console.log(inprocess); document.getElementById( "submitbutton" ).disabled = true ; document.getElementById( "refresh" ).style.display = "block" ; document.getElementById( "message" ).innerHTML = "<P> processing. Please wait. </p>" ; return false ; } function startOver(){ inprocess = false ; document.getElementById( "submitbutton" ).disabled = false ; document.getElementById( "message" ).innerHTML = "" ; document.getElementById( "refresh" ).style.display = "none" ; } </script> <body> <form id= "picker" method= "post" action= "" > group1:<input type= "radio" name= "group1" value= "one" /> group2:<input type= "radio" name= "group1" value= "two" /> group3:<input type= "radio" name= "group1" value= "three" /><br /><br /> Input 1: <input type= "text" id= "intext" /> Input 2: <input type= "text" id= "intext2" /> Input 3: <input type= "text" id= "intext3" /> <input type= "submit" id= "submitbutton" value= "send form" /> </form> <div id= "refresh" > <P> click me </p> </div> <div id= "message" ></div> </body> Start building with 50+ products and up to 12 months usage for Elastic Compute Service
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