class Ajax {
constructor(xhr) {
xhr = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
this.xhr = xhr;
}
send(options) {
let xhr = this.xhr;
let ajax = {
type: options.type || 'GET',
url: options.url || '',
async: options.async || 'true',
dataType: options.dataType || 'json',
data: options.data || ''
};
return new Promise((resolve, reject) => {
let dataList = [];
for (let key in ajax.data) {
dataList.push(key + '=' + ajax.data[key])
}
let dataStr = dataList.join("&");
if (ajax.type === "get" || ajax.type === "GET") {
console.log(dataStr);
ajax.url = dataStr ? ajax.url + "?" + dataStr : ajax.url;
console.log(ajax.url);
xhr.open(ajax.type, ajax.url, ajax.async);
xhr.send();
}
if (ajax.type === "post" || ajax.type === "POST") {
xhr.open(ajax.type, ajax.url, ajax.async);
xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
if (ajax.data) {
xhr.send(ajax.data);
} else {
xhr.send();
}
}
xhr.onreadystatechange = () => {
if (xhr.readyState === 4) {
if (xhr.status >= 200 && xhr.status < 400) {
const data = JSON.parse(xhr.response);
resolve(data);
console.log(data);
} else if (xhr.status >= 400) {
const data = JSON.parse(xhr.response);
console.log(data);
reject(new Error(xhr.status || 'Server if sail'));
}
}
}
})
}
}
