phonegap backbutton，返回事件

document.addEventListener("deviceready", onDeviceReady, false);
    function onDeviceReady(){
        document.addEventListener("backbutton",back,false);  
         }

function back(){alert("back...");}

注意，document.addEventListener("backbutton",back,false)；一定要写在onDeviceReady中。。

转载于:https://www.cnblogs.com/zhoudemo/archive/2013/03/08/2949564.html