Callback Function

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Ajax Event Ajax Interview Questions

Callback Function in Ajax

A callback function is a function passed as a parameter to another function.
If you have more than one AJAX task on your website, you should create ONE standard function for creating the XMLHttpRequest object, and call this for each AJAX task.
The function call should contain the URL and what to do on onreadystatechange (which is probably different for each call):

Example of Callback Function in Ajax

	
function myFunction()
{
loadXMLDoc("ajax_info.txt",function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
    }
  });
}

Ajax Event Ajax Interview Questions

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