Javascript Ajax实例

HTML文件：

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>传统的Ajax方式与服务端交互</title>
		<style>
			.frame{width:250px;height: auto;overflow: hidden;margin:0 auto;}
			.frame ul li{height:40px;line-height: 40px;display: block;border-bottom: 1px solid #ccc;}
			.frame ul li span{padding:10px;}
		</style>
	</head>
	<body>
		<div class="frame">
			<ul id="stuinfo">
				<li>正在加载中...</li>
			</ul>
		</div>
		<script>
			(function(){				
				var xhr=null;
				if(window.ActiveXObject){
					xhr=new ActiveXObject('Microsoft.XMLHTTP');					
				}else if(window.XMLHttpRequest){
					xhr=new XMLHttpRequest();					
				}	
				xhr.open('GET','stu.php',true);
				xhr.send(null);
				xhr.onreadystatechange=function(){					
					switch(xhr.readyState){
						case 0:
							document.getElementById('stuinfo').innerHTML='未初始化...';
							console.log(0,'未初始化...');
							break;
						case 1:
							document.getElementById('stuinfo').innerHTML='请求参数已准备，尚未发送请求...';
							console.log(1,'请求参数已准备，尚未发送请求...');
							break;
						case 2:
							document.getElementById('stuinfo').innerHTML='已经发送请求，尚未接收响应...';
							console.log(2,'已经发送请求，尚未接收响应..');
							break;
						case 3:
							document.getElementById('stuinfo').innerHTML='正在接受部分响应...';
							console.log(3,"正在接受部分响应...");
							break;
						case 4:
							document.getElementById('stuinfo').innerHTML='响应全部接受完毕...';
							console.log(4,"响应全部接受完毕...");
							break;
					};
					if(xhr.readyState==4 && xhr.status==200)
						{				
							var HTML='';
							var data=eval("("+xhr.responseText+")");
							for(var i=0;i<data.length;i++){
								HTML+="<li><span>"+data[i].code+"</span>";
								HTML+="<span>"+data[i].name+"</span>";
								HTML+="<span>"+data[i].score+"</span></li>";								
							}
							document.getElementById('stuinfo').innerHTML=HTML;
						}
					}
				
				
			})();
		</script>
	</body>
</html>

　　PHP文件：

<?php	
	header("Content-type:text/json");
	$stulist=array(
		array("code"=>"10101","name"=>"刘真真","score"=>"530"),
		array("code"=>"10102","name"=>"张明基","score"=>"530"),
		array("code"=>"10103","name"=>"舒观","score"=>"530"),
		array("code"=>"10104","name"=>"周小敏","score"=>"530"),
		array("code"=>"10105","name"=>"陆明明","score"=>"530"),
		array("code"=>"10106","name"=>"杨真","score"=>"530"),
		array("code"=>"10107","name"=>"黄小芳","score"=>"530"),
		array("code"=>"10108","name"=>"张佳","score"=>"530"),
	);
	echo json_encode($stulist);
?>

　　

posted @ 2016-07-07 14:08  寅春树  阅读(264)  评论(0)  编辑  收藏  举报