前端彈框提醒時點選右上角的關閉叉叉後有時需要觸發一些操作，比如新增等。

BootstrapDialog.show({
    type:BootstrapDialog.TYPE_SUCCESS,
    size:BootstrapDialog.SIZE_SMALL,
    closable: function(){
        $(this).on("click", function(){   //主要是新增一層判斷是否點選即可
            doSomething();
        });
    },
    closeByBackdrop: false,
    closeByKeyboard: false
 
,
    title: "溫馨提示",
    message: "儲存成功！",
    buttons: [
        {label: '確定',
        cssClass:"btn-danger", 
        action: function(dialog) {     
            dialog.close();            
        }}
});