JavaScript sends Ajax request instance code _javascript tips

Source: Internet
Author: User

An encapsulation of Ajax

URL is the address of the request
//successfunc is a function after the success of a request return, there is a parameter, the argument is the return of the server style
function ajax (URL,SUCCESSFUNC)
{
 var xhr = window. XMLHttpRequest? New XMLHttpRequest (): New ActiveXObject (' microsoft.xmlhttp ');
 Xhr.open ("POST", url,true);
 Xhr.onreadystatechange = function () {
  if (xhr.readystate = 4)
  {
   if (Xhr.status =)
   {
    Successfunc (Xhr.responsetext);
   }
   else
   {
    alert ("Server returns an error!") ");
   }
  }
 };
 Xhr.send ();
}

The above content is a small series of JavaScript to introduce you to send Ajax request instance code, hope to help everyone, if you have any questions welcome to my message, small series will promptly reply to everyone!

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