How to check browser support ajax or not?

Question

I am using jQuery 1.12 . But my question is how to check browser support ajax or not. If browser support ajax then i want to change page content using ajax.

Answer 1

Almost every browser now support AJAX.

If you still want to test it you can check for XMLHttpRequest

if (window.XMLHttpRequest) {

     // Supports Ajax.

    } else {

     //No. 
}

Answer 2

<script language="javascript" type="text/javascript">
   <!-- 

   function ajaxFunction(){
      var ajaxRequest;  // The variable that makes Ajax possible!

      try{
         // Opera 8.0+, Firefox, Safari (1st attempt)
         ajaxRequest = new XMLHttpRequest();
      }catch (e){
         // IE browser (2nd attempt)
         try{
            ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
         }catch (e) {
            try{
         // 3rd attempt
               ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
            }catch (e){

               alert("Failure");
               return false;
            }
         }
      }
   }
   //-->
   </script>

Try individually three times to make the XMLHttpRequest object. If all cases fail, it is sure that the browser is outdated and doesn't support ajax. Hope this helps!

Answer 3

Found this at: http://programmerguru.com/ajax-tutorial/browser-support/

Here is the code snippet which checks if the browser supports AJAX or not.
?
<script type="text/javascript">
var xmlhttp;
function checkAJAXSupport() {
    if (window.XMLHttpRequest) { // Mozilla, Safari, ...
      xmlhttp= new XMLHttpRequest();
      alert("Yes. Your browser must be one among them - Mozilla, Safari, Chrome, Rockmelt, IE 8.0 or above");
    } else if (window.ActiveXObject) { // IE
      try {
        xmlhttp= new ActiveXObject("Msxml2.XMLHTTP");
        alert("Yes. Your browser must be IE");
      } 
      catch (e) {
        try {
          xmlhttp= new ActiveXObject("Microsoft.XMLHTTP");
          alert("Yes. Your browser must be IE");
        } 
        catch (e) {}
      }
    }
 if (!xmlhttp) {
      alert("No. Giving up Cannot create an XMLHTTP instance. Your browser is outdated!");
      return false;
    }
}
</script>