ajax请求函数模块

import axios from 'axios'
export default function ajax(url, data = {}, type = "GET") {
    return new Promise(function (resolve, reject) {
        // 执行异步ajax请求
        let promise
        if (type === 'GET') {
            let dataStr = ''
            Object.keys(data).forEach(key => {
                dataStr += key + '=' + data[key] + '&'
            })
            if (dataStr !== '') {
                dataStr = dataStr.substring(0, dataStr.lastIndexOf('&'))
                url = url + '?' + dataStr
            }
            promise = axios.get(url)
        } else {
            promise = axios.post(url, data)
        }
        promise.then(function (response) {
            // 成功调用resolve()
            resolve(response.data)
        }).catch(function (error) {
            // 失败失败reject()
            reject(error)
        })
    })
}