Error while trying to validate two input boxes at client side.

Question

This is the code i am using to validate two input boxes.
I get an error in the IE which says: <b>'undefined is null or not an object'</b>
       function validateInput(){
            var noNull = validateNull();
            var noNullTwo = validateNullTwo();
            if(noNull==true)
            else
                 alert("Enter values");
                 htmlbevent.cancelSubmit="true";
     function validateNull(){
          var startRange;
          funcName = htmlb_formid + "_getHtmlbElementId";
          func = window[funcName];
          var temp1 = eval(func("range_Start"));
          startRange = temp1.getValue();
          if(startRange == '')
               return false;
          else
              if(startRange.length < 8)
                 alert("Enter the value in proper format");
                 htmlbevent.cancelSubmit="true";
              else
                  return true;
     function validateNullTwo(){
          var endRange;
          funcName2 = htmlb_formid + "_getHtmlbElementId";
          func2 = window[funcName2];
          var temp2 = eval(func("range_End"));
          endRange = temp2.getValue();
          if(startRange == '')
               return false;
          else
              if(endRange.length < 8)
                 alert("Enter the value in proper format");
                 htmlbevent.cancelSubmit="true";
              else
                  return true;
     </script>
   <hbj:form id="myFormId" >
     <hbj:textView id="title" text="Enter Sales Order Search Range" design="HEADER2"/><br><br>
     <hbj:label id="lb_SearchStart" text="Start Range:" labelFor="range_Start" />
     <hbj:inputField id="range_Start" jsObjectNeeded="true" type="string" required="true" maxlength="25"/>
     <hbj:label id="lb_SearchEnd" text="End Range:" labelFor="range_End" />
     <hbj:inputField id="range_End" type="string" maxlength="25"/><br><br>
     <hbj:button id="submit" text="Search!" tooltip="Click me to Search" onClientClick="validateInput()" onClick="searchPressed" design="emphasized" />
   </hbj:form>
  </hbj:page>

Answer 1

Hi Portal Newbie,
   Please follow the below code. One i/p filed ,a button and a Java Script function.
    In the function i searched with only null, if you want you can perform another function.
   If you have any issues, please write me back.
  <hbj:inputField
        id="SystemId"
     disabled="false"
     type="string"
     maxlength="60"
     value=""
     jsObjectNeeded="true" />
  <hbj:button
        id="Search"
       text="Update"
       width="125px"
        tooltip=""
        onClick="UpdateSystem"
        onClientClick="validateFields()"
        disabled="false"
        design="EMPHASIZED"/>
<script language= "JavaScript" >
     function validateFields(){
       var funcName=htmlb_formid+"_getHtmlbElementId";
       func=window[funcName];
       var inputfield=eval(func("SystemId"));
       var value=inputfield.getValue();
       if(value=="")
         alert("Please enter a value");
</script>
Thanks,
Sridhar