js前端 技術--try-catch語句

在做前端權限管理的時候，循環方法的時候 發現有的會有異常，添加try-catch語句語句

 

try
                  {

                   for(var i =0;i<res.length;i++){
                      for(var j =0;j<res[i].children.length;j++){
                          /*if(res[i].children[j].children.size()>0){*/
                          if(typeof res[i].children[j].children != "undefined"){
         for(var x =0;x<res[i].children[j].children.length;x++){

            if("投資指令查詢" == res[i].children[j].children[x].text){
               isHave = true;
               console.log(res[i].children[j].children[x].text);

            }
            if("待審批任務" == res[i].children[j].children[x].text){
               console.log(res[i].children[j].children[x].text);
               resultApproal = true;
            }
            if("已辦事宜" == res[i].children[j].children[x].text){
               console.log(res[i].children[j].children[x].text);
               resultYb = true;
            }
         }
                          }
                      }
                  }
                  }catch (err){
   console.log(err);
}finally {
                      if(isHave == true){

                          var html = '<li class="mui-table-view-cell mui-media mui-col-xs-4 mui-col-sm-4">'
                              + '<a href="javascript:void(0)" onclick="goTradeOrders();">'
                              +'<span class="mui-icon"><img src="<%=basePath%>mui/img/1 (2).png" style="width: 40px;height: 40px;"/></span>'
                              +'<div class="mui-media-body2">投資指令查詢</div></a></li>';
                          $("#showRole").append(html);
                      }
}

              }

簡單的移動端的權限管理

根絕業務處理可以 選擇性的是否拋出異常