XML issue - can it be solved with JavaScript?

[pcguru333]

I posted my issue in the XML programming forum but I haven't received an answer. I don't do much in JavaScript but I have experience with other languages. I have an issue where I am inserting values from an XML doc using XSL/Xpath, etc and I want to avoid issues where in some cases a divide by zero occurs. I would like to be able to trap those errors and instead of dividing simply display a result of zero.

Can this be done with JavaScript? Anyone with XML/XSLT and/or JavaScript experience is welcome.

Thanks
Dan

[Bernard Marx]

In JS, there are 'class' properties:

Number.POSITIVE_INFINITY
Number.NEGATIVE_INFINITY

How you get these numbers into Javascript via XPath is another matter.

var n=3, k=0, q; 
for(;k<4;k++){ 
  q=3/(n-k); 
  if(q==Number.POSITIVE_INFINITY) 
    alert("division by zero") 
  else 
    alert(q) 
} 

[pcguru333]

I have included snippet of code to see if someone can explain how I can use a JavaScript If statement.

In psuedocode:
If XMLValueA/XMLValueB = DivideByZero
Then Display '0'
Else Display XMLValueA/XMLValueB

Here is a snippet from my xsl doc:

<td style="text-align:right;">
 <xsl:value-of select="format-number(Form101_A_Value div Form101_A_Number,'$#,###,###,##0')" /> 
 </td>

Thanks
Dan