JavaScript AJAX实例

// method : 请求方式 POST/GET;
// url:     如果为GET方式的话url里面要带参数
// obj:     准备好的容器,方便储存拿到的数据


function xhr ($method, $url, obj)
{
  var Request = new XMLHttpRequest();
  Request.open($method, $url);
  Request.setRequestHeader("CONTENT-TYPE", "application/x-www-from-urlencoded");
  Request.send();
  Request.onreadystatechange = function ()
  {
    if (Request.readyState === 4 && Request.status === 200) {
      obj.innerHTML = Request.responseText;
    } else {
      obj.innerHTML = Request.status;
    }
  }
}