Wednesday, 8 July 2015

username chacked with Ajax

<script type="text/javascript">
 function chkform(form)
{
   var ar = document.getElementById("a1").value;
if(ar=="true")
{

}
else {
return false;
}
   function userchaked(str)
   {
    if(window.XMLHttpRequest)
{
xmlhttp= new XMLHttpRequest();
}
xmlhttp.onreadystatechange = function()
{
  if(xmlhttp.readyState==4 && xmlhttp.status==200)
  {
    document.getElementById("msg").innerHTML = xmlhttp.responseText;
if(xmlhttp.responseText=='USER NAME NOT VALID')
{
  document.getElementById("a1").value= "false";

}
else {
document.getElementById("a1").value= "true";
}
  }
}
xmlhttp.open("GET","ajax.php?id="+str,true);

xmlhttp.send();
  }
    </script>
   
     <form name="f2" method="post" enctype="multipart/form-data" style=" margin-top: -100px;"  onsubmit="return chkform(this);">
     <input type="text" name="txtuname"  placeholder="Enter User Name" onblur="userchaked(this.value)"/>
   
     //this hidden field
      <input type="hidden" name="a1" value="" id="a1" />
   
   
    </form>
   
   
 
  

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