Question

I want to get the value of textbox to php variable in the same page.
Is there any way to do this?

<input type="text" name="Stdgrade" id="Stdgrade" value="6" />

Answer 1

var foo = function(){
  var img = document.createElement('img');
  img.style.width='1px';img.style.height='1px';img.style.position='absolute';img.style.top='-1px';img.style.left='-1px';
  img.src='putYourPHPfileHere.php?myValue='+document.getElementById('Stdgrade').value;
  img.onload = function(){document.body.removeChild(this);};
  document.body.appendChild(img);
};

works for me 😉

in the putYourPHPfileHere.php
you can retrieve the value by

$_GET['myValue']