原生ajax

POST

var xmlhttpt;
					if (window.XMLHttpRequest)
					{
						// IE7+, Firefox, Chrome, Opera, Safari 浏览器执行代码
						xmlhttpt=new XMLHttpRequest();
					}
					else
					{
						// IE6, IE5 浏览器执行代码
						xmlhttpt=new ActiveXObject("Microsoft.XMLHTTP");
					}
					xmlhttpt.onreadystatechange=function()
					{
						if (xmlhttpt.readyState==4 && xmlhttpt.status==200)
						{
							console.log(xmlhttpt.responseText);
							console.log((that.parentNode.parentNode.children[2]).children[0].innerHTML="票数:"+xmlhttpt.responseText);
							
						}
					}
					xmlhttpt.open("POST","/yz-toupiao/get-piaonum",true);
					xmlhttpt.send("num="+num);

GET

var xmlhttpt;
					if (window.XMLHttpRequest)
					{
						// IE7+, Firefox, Chrome, Opera, Safari 浏览器执行代码
						xmlhttpt=new XMLHttpRequest();
					}
					else
					{
						// IE6, IE5 浏览器执行代码
						xmlhttpt=new ActiveXObject("Microsoft.XMLHTTP");
					}
					xmlhttpt.onreadystatechange=function()
					{
						if (xmlhttpt.readyState==4 && xmlhttpt.status==200)
						{
							console.log(xmlhttpt.responseText);
							console.log((that.parentNode.parentNode.children[2]).children[0].innerHTML="票数:"+xmlhttpt.responseText);
							
						}
					}
					xmlhttpt.open("GET","/yz-toupiao/get-piaonum?num="+num,true);

                                        xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");//像表单一样提交数据
					xmlhttpt.send();