hbuilder打包的h5返回鍵就退出app解決方案

document.addEventListener('plusready',function(){
var webview = plus.webview.currentWebview();
plus.key.addEventListener('backbutton', function() {
webview.canBack(function(e) {
        if (e.canBack) {
                webview.back();
        } else {
            webview.close();//hide,quit
        }
    })
});

});