es6_promise.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
  function getInfo(type,url) {
        return new Promise((resolve, reject) => {
            let XHM=new XMLHttpRequest()
            XHM.onreadystatechange=function (e) {
                if (this.readyState !== 4) {
                    return;
                }
                if(XHM.status===200){
                    resolve(this.response)
                }else {
                    reject(new Error(this.statusText))
                }
            };
            XHM.open(type,url,true)
            XHM.send()

        })
    }

    const url='https://www.easy-mock.com/mock/5a769ac93c4ca20b4f1dd692/example_copy/list/:id#!method=get'
    getInfo('get',url).then((data)=>{
        console.log(data)
    }).catch((e)=>{
        console.log(e)
    })


    let [a,b,c]=[1,2,3]
    console.log(a)
    console.log(b)
    console.log(c)
</script>
</body>
</html>