Please help in my code..

[jjqbunty]

 <script type="text/javascript">
            function qtycheck() {
              var A = "qty_'+row_id+'".value;
              var B = "qtyact_'+row_id+'".value;
             
              if (A = or > B) {
                "qty_'+row_id+'".value=0  
                alert("not allowed");
              } else {
              alert("OK");
              }
            }
        </script> 

[Funce]

What issues are you having with this code?

[jjqbunty]

I want when this function called by a button onchange, number in "qty" must not be greater then the number in "qtyact" if its greater then this will show the error...

Here we have multiple rows.. 

Sorry I am just a beginner and found this Inventory Source Code from the web.. and found a missing very important validation.

Thanks in Advance..

[jjqbunty]

Code with Single/First Line is working fine (below) with below code. But after modification for multiple rows... my knowledge and even google is not able to help me :):)

 

<script type="text/javascript">
            function qtycheck() {
              var l = qty_1.value;
              var h = qtyact_1.value;
              //alert("hi " + h + " lo " + l);
              if (l > h) {
                qty_1.value=0  
                alert("not allowed");
              } else {
                alert("OK");
              }
            }
        </script> 

 

[justsomeguy]

If you want to check if something is greater than or equal, instead of this:

if (A = or > B) 

you do this:

if (A >= B) 

Here's a list of operators:

https://www.w3schools.com/jsref/jsref_operators.asp

[jjqbunty]

Thanks for the reply "justsomeguy" let me test..

Please comments on the second option as well...

var A = "qty_'+row_id+'".value;
              var B = "qtyact_'+row_id+'".value;

above code is fine? while I have multiple line to call.. Sorry for my bad programming knowledge

[justsomeguy]

No, that code probably isn't going to work like you expect.  What exactly are you trying to do there?  If you're trying to get the value of an input element, you need to use something like document.getElementById to get the element.