单个用户
多个用户
单个数据：document.getElementById('button1').addEventListener("click",loadUser);
document.getElementById('button2').addEventListener("click",loadUsers);
function loadUser(){
var xhr=new XMLHttpRequest();
xhr.open('GET',"user.json",true);
xhr.onload=function(){
if(this.status==200){
var user=JSON.parse(this.responseText);
console.log(user);
var output='';
output+=`
- ${user.id}
- ${user.name}
- ${user.phone}
`;
document.getElementById('user').innerHTML=output;
xhr.send();
多个数据：function loadUsers(){
var xhr=new XMLHttpRequest();
xhr.open('GET',"users.json",true);
xhr.onload=function(){
if(this.status==200){
var users=JSON.parse(this.responseText);
console.log(users);
var output='';
//遍历数据for( var i in users){
output+=`
- ${users[i].id}
- ${users[i].name}
- ${users[i].phone}
`;
document.getElementById('users').innerHTML=output;
xhr.send();
