Fetch请求后台的数据

时间:2023-03-09 00:39:51
Fetch请求后台的数据
     <style>
#btn{
width: 50px;
height: 50px;
background-color: red;
}
#output{
width: 100px;
height: 100px;
background-color: pink;
}
</style> <button id="btn"></button>
<div id="output"></div>
  //jsong格式数据
          [
            {
              "name":"张三",
              "age":25
            },
            {
              "name":"李四",
              "age":28
            }
          ]
  //js代码
    <script>
btn.onclick=function(){
fetch("data.json",{
headers:{
"Content-Type":"application/json"
},
}).then(function(res){
return res.json();
}).then(function(data){
console.log(data);
var str="";
data.forEach(item => {
str+=`<p>${item.name}<p>` });
document.getElementById("output").innerHTML=str; }).catch(error=>console.log(error))
}
</script>
/* Fetch发送请求 get*/
var page=1;
var pageSize=5;
var totalPage=0;
fetch(`/user/queryUser?page=${page}&pageSize=${pageSize}`, { headers: {
  'Content-Type': 'application/json; charset=UTF-8'
}, }).then(res => res.json()).then(res => {
  console.log(res);
  totalPage=(Math.ceil(res.total/pageSize));
  var html = template("userTpl", res);
  console.log(html);
  $("#userBox").html(html);
}).catch(err => {
console.log(err);
})
//Fetch请求 post
var data={
id:id,
isDelete:isDelete
}
fetch("/user/updateUser",{
headers: {
    'Content-Type': 'application/json; charset=UTF-8'
},
    method:"post",
    body:JSON.stringify(data),
}).then(res=>res.json()).then(res=>{
   console.log(res);
  if(res.success){
    location.reload();
}else{
  if(res.error){
    alert(res.message);
}
}
})