定义
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| const myAjax = url => {
return new Promise((resolve,reject) => {
let client = new XMLHttpRequest();
client.open("GET",url);
client.onreadystatechange = handler;
client.responseType = "json";
client.setRequsetHeader("Accept","application/json");
client.send();
handler = function() {
if(this.readyState != 4) return;
if(this.status === 200){
resolve(this.response)
}else {
reject(new Error(this.statusText))
}
}
})
}
|
使用
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| myAjax('http://blog.voyz.vip').then(res => {
console.log(res)
}).catch(error => {
console.log(error)
})
|
