[nfbcs] Javascript question:

[Aaron Cannon]

indexOf will return -1 if it doesn't find the string that was passed to it in the string it was called on. So, if n is always empty, indexOf a non-empty string will never find that string, so it will always return -1. As a result, the first condition of that if statement will never be true, therefore the if statement will never run.

Aaron

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> On Sep 9, 2018, at 08:46, Charles E. Black via nfbcs <nfbcs at nfbnet.org> wrote:
> 
> Morning:
> 
> question relates to javescript:
> if p is a declaired variable with no value and n is an empty string, then
> what will the following if statement resolve to:
> if((p=n.indexOf("?"))>0&&parent.frames.length)
> 
> 
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