regex

[mili]

Hi,

I have a problem with a regex for decimal validation that behaves very wierdly.
/[0-9]+\.[0-9]+/

If there is a 0 in the number, it works
Eg: 11.210

Otherwise it doesnt
Eg: 11.210

Pls help

Thanks

[Jona]

<form action="" name="myForm" onsubmit="val(this.textObj.value); return false;"><div>
<input type="text" name="textObj"><br>
<input type="submit" value="Validate">
</div></form>
<script type="text/javascript"><!--
function val(obj){
var re = /^[0-9]+\.[0-9]+$/;
if(re.exec(obj)){alert("valid");}
else {alert("invalid");}
}
//--></script>


[J]ona

[mili]

Thanks Jona..
What is the significance of ^ & $?

[Jeff Mott]

If there is a 0 in the number, it works
Eg: 11.210

Otherwise it doesnt
Eg: 11.210This is supposed to be an example that works and an example that doesn't, right? Why are they the same?

[mili]

Sorry, it is:

If there is a 0 in the number, it works
Eg: 11.210

Otherwise it doesnt
Eg: 11.211

[Jeff Mott]

When I tested, these both returned true.alert(/[0-9]+\.[0-9]+/.test('11.210'));
alert(/[0-9]+\.[0-9]+/.test('11.211'));

[Jona]

Originally posted by mili
Thanks Jona..
What is the significance of ^ & $?

^ means it "starts with" and $ means it "ends with." Together, "it starts with and ends with" the RegEx in between them.

A good link for reference is: http://devedge.netscape.com/library/manuals/2000/javascript/1.3/guide/regexp.html

[J]ona