Only Numeric values and Enter

[aspvbnetnerd]

The users should only be enabled to use numeric values

I found this and this works fine

function numbersonly() 
{
	if (event.keyCode < 48 || event.keyCode > 57) return false;

}

Then I wanted to add "carriage return"
I tried something like this

George
if (event.keyCode < 48 || event.keyCode > 57) || (event.keyCode = 13) return false;

Tried this to
if (event.keyCode < 48 || event.keyCode > 57) Or (event.keyCode = 13) return false;

To be honest I dont know anything about JavaScript

 

[okiiyama]

When is your function being called? I think you will need to check for the enter key pressed during an "onkeydown" event and not an "onkeyup" event. Also your if statement has some errors... try this:

if (event.keyCode < 48 || event.keyCode > 57 || event.keyCode = 13) return false;

 

[aspvbnetnerd]

It didn't work with your code.

<SCRIPT LANGUAGE="JavaScript">
function numbersonly() {
if (event.keyCode < 48 || event.keyCode > 57) return false;
}

</script>
<input type=text value="0" onkeypress="return numbersonly()">

George

 

[okiiyama]

This works:

function check(val) {
  if(val < 48 || val > 57 || val == 13) {
   return false;
  } else {
   return true;
  }
}
....
<input type="text" ..... onkeydown="check(event.keyCode);">

The problem with this is that this code will not allow you to delete anything in the text box, or allow you to tab to a next field.

 

[tsuji]

13 is in the range of <48, so adding the last condition is obviously making not much sense!

Do this?
[tt]
<SCRIPT LANGUAGE="JavaScript">
function numbersonly(evt) {
var nkeycode=(window.event)?window.event.keyCode:evt.which;
if (nkeycode < 48 || nkeycode > 57) {
return false;
} else {
return true;
}
}
</script>
<input type=text value="0" onkeypress="return numbersonly(event)">
[/tt]

 

[aspvbnetnerd]

Tsuji, thanks for the help

George