{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.manongdao.com/data/attach/logo/logo.png', '推荐 We Are One 的问题《How can I know if a viewScope variable has been in》','https://www.manongdao.com/q-802684.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
In an application I need to know if a viewScope variable has been initialized. When the viewScope variable is created the value might be null. So viewScope.isEmpty("SomeName") does not tell me that it has been intialized and the answer is null or it has not been initialized yet. None of the viewScope properties seem to answer the question "dose the viewScope exist".
相关问题
- Unresponsive buttons after certain time
- Xpages “filter by category name” with two fields v
- Logout control not working
- How to stream file from xPages?
- How to avoid the 64k limit when retrieving data fr
相关文章
- call partialRefreshGet from SSJS using view.PostSc
- Bootstrap4XPages plugin: how to catch a change eve
- How to add html stored in a richtext item to an HT
- Remove Dojo from XPages globally
- Serialization of ManagedProperty
- Complex Xpage takes long for partial refreshs
- Getting Application Layout to work with Bootstrap4
- java.io.NotSerializableException when @ViewScoped
You can get the information whether a viewScope variable does exist or not with