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Ajax-JavaScript&JQuery实现方式

2017-09-13 19:05 375 查看

<!DOCTYPE html>
<html>
<head>
<title>javascript 实现ajax实例</title>
<style type="text/css">

*{
font-size: 20px;
line-height: 1.8;
}
</style>
</head>
<body>
<h1>员工查询</h1>
<label>请输入员工编号：</label>
<input type="text" id="keyword"/><br>
<button id="search">查询</button>
<p id="searchResult">123</p>

<h1>员工新建</h1>
<label>请输入员工姓名：</label>
<input type="text" id="staffName" /><br>
<label>请输入员工编号：</label>
<input type="text" id="staffNumber" /><br>
<label>请输入员工性别：</label>
<select id="staffSex">
<option>男</option>
<option>女</option>
</select><br>
<label>请输入员工职位：</label>
<input type="text" id="staffJob" /><br>
<button id="save">保存</button>
<p id="createResult">123</p>

<script type="text/javascript">

// 改写为json,服务器端返回json类型数据
/*
{
"success":true,
"msg":"XXX"
}

*/

document.getElementById("search").onclick = function(){
var request = new XMLHttpRequest();
request.open("GET","get.php?number="+document.getElementById("keyword").value);
request.send();
request.onreadystatechange = function(){
if(request.readyState === 4){
if(request.status === 200){
//document.getElementById("searchResult").innerHTML = request.responseText;
var data = JSON.parse(request.responseText);
if(data.success){
document.getElementById("searchResult").innerHTML = request.responseText;
}else{
document.getElementById("searchResult").innerHTML = "出现错误"+request.responseText;
}

}else{
alert("发生错误"+request.status);
}

}
}
}

document.getElementById("save").onclick = function(){
var request = new XMLHttpRequest();
request.open("POST","get.php");

request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
var data = "name=" + document.getElementById("staffName").value
+ "&number=" + document.getElementById("staffNumber").value
+ "&sex=" + document.getElementById("staffSex").value
+ "&job=" + document.getElementById("staffJob").value;
request.setRequestHeader("Content-Type","application/x-www.form-urlencoded");
request.send(data);
request.onreadystatechange = function(){
if(request.readyState === 4){
if(request.status === 200){
//document.getElementById("createResult").innerHTML = request.responseText;
var data = JSON.parse(request.responseText);
if(data.success){
document.getElementById("searchResult").innerHTML = request.responseText;
}else{
document.getElementById("searchResult").innerHTML = "出现错误"+request.responseText;
}
}else{
alert("发生错误"+request.status);
}

}
}
}

</script>
</body>
</html>

换成JQuery方法实现：

<!DOCTYPE html>
<html>
<head>
<title>JQuery 实现ajax实例</title>
<script
src="https://code.jquery.com/jquery-2.2.4.min.js"
integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44="
crossorigin="anonymous"></script>
<style type="text/css">

*{
font-size: 20px;
line-height: 1.8;
}
</style>
</head>
<body>
<h1>员工查询</h1>
<label>请输入员工编号：</label>
<input type="text" id="keyword"/><br>
<button id="search">查询</button>
<p id="searchResult">123</p>

<h1>员工新建</h1>
<label>请输入员工姓名：</label>
<input type="text" id="staffName" /><br>
<label>请输入员工编号：</label>
<input type="text" id="staffNumber" /><br>
<label>请输入员工性别：</label>
<select id="staffSex">
<option>男</option>
<option>女</option>
</select><br>
<label>请输入员工职位：</label>
<input type="text" id="staffJob" /><br>
<button id="save">保存</button>
<p id="createResult">123</p>

<script type="text/javascript">

// 改写为json,服务器端返回json类型数据
/*
{
"success":true,
"msg":"XXX"
}

*/
$(document).ready(function(){

$("#search").click(function(){
$.ajax({
type:"GET",
url:"get.php?number="+$("keyword").val(),
dataType:"json",
success:function(data){
if(data.success){
$("searchResult").html(data.msg);
}else{
$("searchResult").html("出现错误"+data.msg);
}
},
error:function(jqXHR){
alert("发生错误"+jqXHR.status);
}
});
});
});

$("#save").click(function(){
$.ajax({
type:"POST",
url:"get.php?number",
dataType:"json",
data:{
name:$("#staffName").val();
number:$("#staffNumber").val();
sex:$("#staffSex").val();
job:$("#staffJob").val();
},
success:function(data){
if(data.success){
$("createResult").html(data.msg);
}else{
$("createResult").html("出现错误"+data.msg);
}
},
error:function(jqXHR){
alert("发生错误"+jqXHR.status);
}
});
});
});

</script>
</body>
</html>

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