js:
function lajax(options) {
options = Object.assign({
url: '',
method: 'post',
async: true,
data: null,
headers: {'Content-Type': 'application/x-www-form-urlencoded'},
progress: Function.prototype
}, options);
return new Promise((resolve, reject) => {
let xhr = new XMLHttpRequest();
xhr.upload.onprogress = options.progress;
xhr.open(options.method, options.url, options.async);
if(options.method == 'post') {
Object.keys(options.headers).forEach(key => {
xhr.setRequestHeader(key, options.headers[key]);
})
}
xhr.onreadystatechange = () => {
if(xhr.readyState == 4) {
if(xhr.status == 200 || xhr.status == 304) {
resolve(JSON.parse(xhr.responseText));
}else {
reject(xhr);
}
}
}
xhr.send(options.data);
}).catch((e) => {});
}
涉及到的方法可以去上查看
调用 lajax:
lajax({
url: 'XXXXXXXXXXXXXXX',
method: 'get'
})
.then(function(data) {
console.log(data);
})
.catch(function(err) {
console.log(err);
})