/**
 * Description: 监测 PC 端浏览器返回事件 & Android 返回事件
 * Author: Christina
 * Date: 2019-01-23
 **/

window.backConfirmed = false;
pushHistory();

window.addEventListener("popstate", function(e) {  //popstate监听返回按钮
  if(window.backConfirmed) {
    window.history.go(-1)
  } else {
    window.backConfirmed = false;
    window.history.pushState({}, "quit", "");
    confirm('确认离开么？')
 }
}, false);

function pushHistory() {
  var state = {
    title: "myCenter",
    url: ""
  };
  window.history.pushState(state, state.title, state.url);
}