var userAgent = navigator.userAgent.toLowerCase();
// 调用原生方法返回
function back() {
        if (equipment('iphone')) {
            naviBack({ isRefresh: '0', callBack: 'isRefresh()' });
        } else if (equipment('ipad')) {
            naviBack({ isRefresh: '0', callBack: 'isRefresh()' });
        } else if(equipment('android')) {
            JsBridge.call('JSBridge', 'naviBack', { isRefresh: false, callBack: 'isRefresh()' }, (res) => {});
        } else {
            window.history.go(-1);
        }
}

function equipment(val){
    var res = false;
    var userAgent = navigator.userAgent.toLowerCase();
    console.log(userAgent);
    if(userAgent.indexOf(val) > -1) {
      res = true;
    }
    return res;
  
  };