checking for a numeric range

JohannIcon · Oct 18, 2002

Hi All,

I am trying to check wether the user inputs a correct decimal number. The number must be smaller than 1 but bigger than 0. In other words, the user must input numbers like 0.01 or 0.712 for the number field to be correct. I am doing the following validation, however it is not working:-

function isNumber(inputVal)
{
inputStr = inputVal.toString()
for (var i = 0; i <inputStr.length; i++)
{
var oneChar = inputStr.charAt(i)
if (oneChar < "0" || oneChar > "1&quot

{
alert("Numeric Field Here. You must input a number, like 0.712&quot

return false
}
}
return true
}

What am I missing?

mit99mh · Oct 18, 2002

Try somethiong like this

Hope it helps.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Number Check</title>
</head>
<script>
function checkValue(){
var e = parseFloat(document.f.t.value)

if( isNaN(e) ){
alert("Not a number" );
return false;
}
else{
if( (e > 0) && ( e < 1 ) ){
alert("Digital" );
return true;

}else{
alert("outside range&quot

;
return false;
}
}

}

</script>
<body>
<form action="" method="post" name="f" id="f" onsubmit="return checkValue();">
<input type="text" name="t">
<input type="submit" name="s" value="s">
</form>

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checking for a numeric range

JohannIcon

Programmer

mit99mh

Programmer

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