用jquery写完代码后 为何浏览器总是显示304错误 ，怎么办
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>
<body>
<h1>员工查询</h1>
<label>请输入员工编号</label>
<input type="text"id="keyword" />
<button id="search">查询</button>
<p id="searchResult"></p>
<h1>员工创建</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"></p>
<script src="/Ajaxdemo/jquery-3.1.1.min.js"></script>
<script>
$(document).ready(function(){
$("#search").click(function(){
$.ajax({
type:"GET",
url:"severs.php?number="+$("#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(){
$.ajax({
type:"POST",
url:"severs.php",
dataType:"json",
data:{
name:$("#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)
}
});
});
});
/*document.getElementById("search").onclick=function(){
var request=new XMLHttpRequest();
request.open("GET","severs.php?number="+document.getElementById('keyword').value);
request.send();
request.onreadystatechange=function(){
if(request.readyState===4){
if(request.status===200){
var data=JSON.parse(request.responseText);
if(data.success){
document.getElementById("searchResult").innerHTML=data.msg;}
else{
document.getElementById("searchResult").innerHTML="出现错误"+data.msg;
}
}else{
alert("发生错误"+request.status)}
}
}
}
document.getElementById("save").onclick=function(){
var request=new XMLHttpRequest();
request.open("POST","severs.php");
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();
request.onreadystatechange=function(){
if(request.readyState===4){
if(request.status===200){
var data=JSON.parse(request.responseText);
if(data.success){document.getElementById("createResult").innerHTML=data.msg;}
else{document.getElementById("createResult").innerHTML="出现错误"+data.msg;
}
}else{
alert("发生错误"+request.status)}
}
}
}*/
</script>
</body>
</html>
