Checkbox selection logic

This js restricts the selection from a group of checkboxes to four. If a fifth one is selected , then the first one whichever was selected will be unchecked.

A combination of js and jQuery.

 

// Restricting the vehicle selection to FOUR – Start
var vehList=new Array();
vehList[0]=””;
vehList[1]=””;
vehList[2]=””;
vehList[3]=””;

var vehObjList = new Array();
vehObjList[0]=””;
vehObjList[1]=””;
vehObjList[2]=””;
vehObjList[3]=””;

function restrictVeh(obj,name){
  var selVin = name;
  var remVeh = “”;
  var remObj;
  if($(obj).attr(’checked’)){
    for(var incr=0;incr <= 3 ; incr++){
      if(vehList[incr]==””){
      vehList[incr]=selVin;
      vehObjList[incr]=obj;
      break;
       }
       if(incr==3){
        remVeh = vehList[0];
        remObj = vehObjList[0];
        $(remObj).attr(’checked’,false);
        for(var cnt=0;cnt<3;cnt++){
       vehList[cnt]=vehList[cnt+1];
       vehObjList[cnt]= vehObjList[cnt+1];
        }
        vehList[3]=selVin;
        vehObjList[3]=obj;
       }
     }
  }else{
    for(var incr=0;incr <= 3 ; incr++){
      if(vehList[incr]==selVin){
      vehList[incr]=””;
      vehObjList[incr]=””;
      for(var cnt=incr;cnt<3;cnt++){
       vehList[cnt]=vehList[cnt+1];
       vehObjList[cnt]=vehObjList[cnt+1]
      }
      vehList[3]=””;
      vehObjList[3]=””;
       }
  
    }  
  }
/* for(var incr=0;incr <= 3 ; incr++){
   alert(vehList[incr]);
  }  */
}
// Restricting the vehicle selection to FOUR – End

Pagination

 <!– Pagination code starts here –>
    <%
     String numResults = (String)request.getAttribute(“usedVehicleCount”);
     String index = request.getParameter(“startIndex”);
     int pages = 1 ;
     int numResultsPerPage = 12;
     int remain = 0;
     int total = 0;
     int resultIndex = 0;

     String showStart = “”;
     String showEnd   = “”;
     String offsetVal = “”;
     
     if(numResults!=null){
     pages = Integer.parseInt(numResults)/numResultsPerPage;
     remain = Integer.parseInt(numResults)%numResultsPerPage;
     total = Integer.parseInt(numResults);
     }
     if(index==null){
     resultIndex = 0 ;
     }else{
     resultIndex = Integer.parseInt(index);
     }

     if(remain!=0&&(total>numResultsPerPage)){
     pages = pages + 1;
     }
     // Start value to display
     if(index == null){
     showStart = “1″;
     }else{
     showStart = String.valueOf(Integer.parseInt(index)+1);
     }

     // End value to display

     if(total<=numResultsPerPage||((resultIndex+numResultsPerPage)>total)){
     showEnd = numResults;
     }else {
     showEnd = String.valueOf(resultIndex+numResultsPerPage);
     }

     //Offset value
     offsetVal = String.valueOf(resultIndex);
    %>
    <!– Pagination code ends here –>

——————————————————————

 <%if(resultIndex != 0) {%>
        <a href=”javascript:frameURL(<%=resultIndex-numResultsPerPage%>)” title=”Previous”>Previous</a>  
        <%}%>
        <a href=”#” ><% out.println(“Showing  “+ showStart + ” – ” + showEnd +” of ” + numResults); %></a>  
        <%if(Integer.parseInt(showEnd)<total){%>
        <a href=”javascript:frameURL(<%=resultIndex+numResultsPerPage%>)” title=”Next”>Next</a>
        <%}%>

—————————————-

 

<logic:iterate id=”usedVehicle” name=”usedVehicleList” type=”java.util.Properties” offset=”<%=offsetVal %>” length=”12″>

Pagination

<!– Pagination code starts here –>
    <%
     String numResults = (String)request.getAttribute(“usedVehicleCount”);
     String index = request.getParameter(“startIndex”);
     int pages = 1 ;
     int numResultsPerPage = 12;
     int remain = 0;
     int total = 0;
     int resultIndex = 0;

     String showStart = “”;
     String showEnd   = “”;
     String offsetVal = “”;
     
     if(numResults!=null){
     pages = Integer.parseInt(numResults)/numResultsPerPage;
     remain = Integer.parseInt(numResults)%numResultsPerPage;
     total = Integer.parseInt(numResults);
     }
     if(index==null){
     resultIndex = 0 ;
     }else{
     resultIndex = Integer.parseInt(index);
     }

     if(remain!=0&&(total>numResultsPerPage)){
     pages = pages + 1;
     }
     // Start value to display
     if(index == null){
     showStart = “1″;
     }else{
     showStart = String.valueOf(Integer.parseInt(index)+1);
     }

     // End value to display

     if(total<=numResultsPerPage||((resultIndex+numResultsPerPage)>total)){
     showEnd = numResults;
     }else {
     showEnd = String.valueOf(resultIndex+numResultsPerPage);
     }

     //Offset value
     offsetVal = String.valueOf(resultIndex);
    %>
    <!– Pagination code ends here –>

———————————————————————-

<%if(resultIndex != 0) {%>
        <a href=”javascript:frameURL(<%=resultIndex-numResultsPerPage%>)” title=”Previous”>Previous</a>  
        <%}%>
        <a href=”#” ><% out.println(“Showing  “+ showStart + ” – ” + showEnd +” of ” + numResults); %></a>  
        <%if(Integer.parseInt(showEnd)<total){%>
        <a href=”javascript:frameURL(<%=resultIndex+numResultsPerPage%>)” title=”Next”>Next</a>
        <%}%>

—————————————————————————

<logic:iterate id=”usedVehicle” name=”usedVehicleList” type=”java.util.Properties” offset=”<%=offsetVal %>” length=”12″>