lsiten-editor-v2/src/js/util/ajax.js

let Ajax = function () {
}

Ajax.prototype = {
  constructor: Ajax,
  get: function (url) {
    return new Promise((resolve, reject) => {
      let xhr = new XMLHttpRequest();
      xhr.open('GET', url, true);
      xhr.onreadystatechange = function() {
        // readyState == 4说明请求已完成
        if (parseInt(xhr.readyState) === 4) {
          if (parseInt(xhr.status) === 200 || parseInt(xhr.status) === 304) {
            resolve(xhr.responseText);
          } else {
            reject(xhr);
          }
        }
      };
      xhr.send();
    })
  },
  post: function (url, data, contentType) {
    return new Promise((resolve, reject) => {
      let xhr = new XMLHttpRequest();
      xhr.open("POST", url, true);
      // 添加http头，发送信息至服务器时内容编码类型
      if (!contentType || contentType !== 'formdata' ) {  
        !contentType && (contentType = 'application/x-www-form-urlencoded');
        xhr.setRequestHeader('Content-Type', contentType);
      }

      xhr.onreadystatechange = function() {
        if (parseInt(xhr.readyState) === 4) {
          if (parseInt(xhr.status) === 200 || parseInt(xhr.status) === 304) {
            resolve(JSON.parse(xhr.responseText));
          } else {
            reject(JSON.parse(xhr.responseText));
          }
        }
      };
      xhr.send(data);
    })
  }
}
export default Ajax;