//vue钩子函数created方法中添加监听等待设备API库加载好created(){　　var that = this;　　document.addEventListener("deviceready", that.onDeviceReady, false);}methods:{ //设备API可以使用了,然后在vue的methods中添加如下方法　　onDeviceReady() {　　　　var that = this; document.addEventListener("backbutton", that.eventBackButton, false);　　},　　//监听返回键按钮事件　　eventBackButton(){　　　　var that = this; that.$toast(‘再按一次退出‘);//这里使用的是vantUI框架的弹窗提示，此处可根据自身项目进行更改 document.removeEventListener("backbutton", that.eventBackButton, false); //注销返回键 document.addEventListener("backbutton", that.exitApp, false);//绑定退出事件 var intervalID = setInterval(() => { 　　document.clearInterval(intervalID); 　　document.removeEventListener("backbutton", that.exitApp, false); 　　document.addEventListener("backbutton", that.eventBackButton, false); },2000);　　},　　// 关闭app　　exitApp() { 　　var that = this; 　　navigator.app.exitApp();　　}}//页面离开时销毁监听事件destroyed() {　　var that = this;　　document.removeEventListener("backbutton", that.exitApp, false);　　document.removeEventListener("backbutton", that.eventBackButton, false);},