Java If Statement

[aumstu]

I posted this message earlier but was unable to log back in b/c of a registration problem. Not sure exactly what happened there. But I noticed that dotnet had responded but I was unable to view the response. So here it goes again…


I have some java script code that alerts the user if the did not enter a numeric value in the textbox. Underneath that I have the calculations that would determine the answer…

Like textbox1 = 10
Textbox2 = 10

Code textbox1/textbox2 = 10

Right now it will go through the code and if textbox1 is not a number…then the value for the calculations is NaN. Is there a way I can put a If statement using javascript around the calculations that states…if textbox1 and textbox2 is a number then compute else do nothing.


Thanks for any help

 

[damber]

a) Java is NOT the same as Javascript
b) Javascript is NOT the same as ASP
c) This is the ASP forum
d) Javascript forum is forum216



A smile is worth a thousand kind words. So smile, it's easy!

 

[jrenae]

I think you're looking for how to construct an if statement in javascript? If so, here's how I do it.

<script LANGUAGE="JavaScript">
function checkCalc(){
var txt1 = new Number(document.Form1.textbox1.value);
var txt2 = new Number(document.Form1.textbox2.value);
if ((isNaN(txt1)) || (isNaN(txt2)))
{
alert ("textbox1 and textbox2 must be a valid numbers");
return false;
}

else
{ var myNum = new Number();
myNum = (txt1 / txt2)
alert (myNum);
return true;
}
}
</script>

 

[johnwm]

jrenae
Welcome to Tek-Tips. Your helpful answers will make you a valued member of these forums. Have a look at faq222-2244 to see how the forums work. That way we can hopefully keep Javascript questions in the Javascript forum, and ASP stuff in the ASP forum. Makes life a lot easier for members searching for info if it's in it's expected forum.

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[jrenae]

johnwm - OK...thanks...in the future I will not reply if a question is in the wrong forum. By the way...love this site.