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<DIV dir=ltr align=left><SPAN class=859344613-01062006><FONT face=Arial
color=#0000ff size=2>How about using the isNaN(testValue) function for your
test? NaN is not a string.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=859344613-01062006><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=859344613-01062006><FONT face=Arial
color=#0000ff size=2>total = isNaN(x1)?0:x1 + isNaN(y1)?0:y1 +
isNaN(z1)?0:z1;</FONT></SPAN></DIV>
<DIV><SPAN class=859344613-01062006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=859344613-01062006><FONT face=Arial color=#0000ff size=2><A
href="http://www.devguru.com/Technologies/ecmascript/quickref/isnan.html">http://www.devguru.com/Technologies/ecmascript/quickref/isnan.html</A></FONT></SPAN></DIV>
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<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
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<FONT face=Tahoma size=2><B>From:</B> javascript-bounces@LaTech.edu
[mailto:javascript-bounces@LaTech.edu] <B>On Behalf Of </B>Alan
Easton<BR><B>Sent:</B> Thursday, June 01, 2006 8:42 AM<BR><B>To:</B>
javascript@LaTech.edu<BR><B>Subject:</B> [Javascript] Adding values in input
boxes<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>
<DIV class=RTE>Hello People,</DIV>
<DIV class=RTE> </DIV>
<DIV class=RTE>I have 4 input boxes, 3 so I can enter numeric values in(c1, c2,
c3), and the 4th to display the total.(total1)</DIV>
<DIV class=RTE> </DIV>
<DIV class=RTE>I have put onblur actions on each of the 3 boxes like such:
onBlur="addNumbers();"</DIV>
<DIV class=RTE> </DIV>
<DIV class=RTE>My function is:</DIV>
<DIV class=RTE>---------------------------------------------</DIV>
<DIV class=RTE>function addNumbers() { <BR> <BR> var x1,
y1, z1</DIV>
<DIV class=RTE> var x = parseInt(frmAIMSsignup.c1.value);<BR> var y =
parseInt(frmAIMSsignup.c2.value);<BR> var z =
parseInt(frmAIMSsignup.c3.value);<BR> <BR> if (x !=
'NaN')<BR> {<BR> x1 =
x;<BR> }<BR> else<BR> {<BR> x1 = 0;<BR> }<BR> if
(y != 'NaN')<BR> {<BR> y1 =
y;<BR> }<BR> else<BR> {<BR> y1 = 0;<BR> }<BR> if
(z != 'NaN')<BR> {<BR> z1 =
z;<BR> }<BR> else<BR> {<BR> z1 = 0;<BR> }</DIV>
<DIV class=RTE> var totcol1 = x1 + y1 +
z1;<BR><BR> <BR> frmAIMSsignup.total1.value =
totcol1; <BR>} </DIV>
<DIV class=RTE> </DIV>
<DIV class=RTE></script></DIV>
<DIV class=RTE> </DIV>
<DIV class=RTE>---------------------------------------------</DIV>
<DIV class=RTE> </DIV>
<DIV class=RTE>I am adding then OK, except when no numeric value is in the input
box. I simply want to be able to add up the 3 boxes when any of them change, but
also catch when nothing has been entered.i.e. when the value is undefined.</DIV>
<DIV class=RTE> </DIV>
<DIV class=RTE>Does anyone have any ideas. I would appreciate any help.</DIV>
<DIV class=RTE> </DIV>
<DIV class=RTE>Many Thanks,</DIV>
<DIV class=RTE> </DIV>
<DIV class=RTE>Al...</DIV></DIV></BODY></HTML>