关于json对象的剔除 _JavaScript

关于json对象的删除

一个json对象在后台产生了，但是有些数据可能无效或者不合法，所以需要在前台作些例外处理，比如删除掉。

json的删除有很多种，直接用过 delete json对象方式。

举例如下

var columns = [  
      {name:"bigTitle",caption:reportData.bigTitle,children:[
    {name:"orgName",caption:"组织结构名称",width:100,mode:"string"},                                                   
    {name:"helpinfo",caption:reportData.columnCaption[0],
     children:[{name:"workday_month",caption:"工作日数",width:80,mode:"number",format:"#"},
               {name:"loggedday_month",caption:"登录天数",width:80,mode:"number",format:"#"}]
    },
    {name:"helpinfo",caption:reportData.columnCaption[1],
     children:[{name:"workday_week1",caption:"工作日数",width:70,mode:"number",format:"#"},
               {name:"loggedday_week1",caption:"登录天数",width:70,mode:"number",format:"#"}]
    },
    {name:"helpinfo",caption:reportData.columnCaption[2],
     children:[{name:"workday_week2",caption:"工作日数",width:70,mode:"number",format:"#"},
               {name:"loggedday_week2",caption:"登录天数",width:70,mode:"number",format:"#"}]
    }, 
    {name:"helpinfo",caption:reportData.columnCaption[3],
     children:[{name:"workday_week3",caption:"工作日数",width:70,mode:"number",format:"#"},
               {name:"loggedday_week3",caption:"登录天数",width:70,mode:"number",format:"#"}]
    }, 
    {name:"helpinfo",caption:reportData.columnCaption[4],
     children:[{name:"workday_week4",caption:"工作日数",width:70,mode:"number",format:"#"},
               {name:"loggedday_week4",caption:"登录天数",width:70,mode:"number",format:"#"}]
    }, 
    {name:"helpinfo",caption:reportData.columnCaption[5],
     children:[{name:"workday_week5",caption:"工作日数",width:70,mode:"number",format:"#"},
               {name:"loggedday_week5",caption:"登录天数",width:70,mode:"number",format:"#"}]
    }
      ]}   
     ];

根据rtData.columnCaption 判断，如果为null，则删除该节点，不予显示。

用过 delete columns[0]['children'][6];

无效，报js错误，后来发现删除确实是删除了，但是最后还遗留了一个逗号，导致IE下报错，查了很多资料无解。

最后换了个解决方法。

columns[0]['children'].pop();

pop()方法表示删除最后一个节点。

工作日历的要求正好满足该要求，从后递减。

其他类似的方法有如下：