mui自定义事件带参返回mui.back()

        window.addEventListener('doit', function(e){
        　    //获取参数值
            var imagePath = e.detail.imagePath;
        });

//获得父页面的webview
var view = plus.webview.currentWebview().opener();
mui.fire(view,'doit',{
    imagePath:imagePath
});
mui.back()