react中的ajax封装实例详解

**opts: {'可选参数'}
**method: 请求方式:GET/POST,默认值:'GET';
**url:  发送请求的地址, 默认值: 当前页地址;
**data: string,json;
**async: 是否异步:true/false,默认值:true;
**cache: 是否缓存：true/false,默认值:true;
**contentType: HTTP头信息，默认值：'application/x-www-form-urlencoded';
**success: 请求成功后的回调函数;
**error: 请求失败后的回调函数;
*/
let configResText = function (responseText, resTextType){
 return resTextType == 'html' "Content-type", defaults.contentType);
  oXhr.send(defaults.data);
 }  
 //4.等待服务器回应
 oXhr.onreadystatechange = function (){
  if(oXhr.readyState === 4){
   if(oXhr.status === 200)
    defaults.success.call(oXhr, configResText(oXhr.responseText, defaults.resTextType));
   else{
    defaults.error();
   }
  }
 };
};

export default ajax;

import ajax from '../../commonJS/ajax.js';
ajax({
  url: '',
  data: '',
  success: function(t) {
      if (t) {
      let allpageNum = t.data;
        $this.setState({
         allPages:allpageNum
        });
      }
  }
});