isNumeric not recognising decimals

[jy3]

HI,
I am after writing an IsNumeric method but it is not recognising decimals. I will actually be entering code-levels eg, 2.2.60.2 etc so it is vital that it will recognise the decimals.

var qe = document.getinfo.elements["Code1"]
var q = qe.value
if (isNaN(q)||q.match(/^\W*$/)) {
alert( "The codelevel is not a number!&quot
qe.focus();
qe.select()
return false;
}

Any ideas on how to fix this??
Cheers
JY

 

[GaryC123]

<script language=javascript>
function checkifnumber(){
var oldstring=document.myform.textbox.value;
newString = oldstring.replace(&quot;.&quot;,&quot;&quot;
if (isNaN(newString+0)) {
alert(&quot;invalid entry&quot;
return false;
} }
</script>

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