Subj : Question about string.trim()
To   : echicken
From : KenDB3
Date : Thu Sep 08 2016 12:32 pm

  Re: Question about string.trim()
  By: echicken to KenDB3 on Thu Sep 08 2016 11:39 am

 >> So, my first question is, is the trim() function valid in JavaScript
 >> 1.8.5? I'm guessing it is because it's been working in

 ec> Yes, it's a valid method on a String object.

Awesome, thank you.

 >> What I find interesting is that the error flagged on a trim() on line
 >> 275, but was OK with the trim() on line 270: timestamp.trim(). 

 ec> In this case 'timestamp' is really just another String, since you're just
 ec> grabbing the text from the feed and not turning it into a Number or Date
 ec> object, so that makes sense.

 ec> My best guess is that the 'solarflux' value was absent when this person
 ec> fetched the feed, or that they failed to fetch the feed altogether. On
 ec> line 80, if 'solardata.solarflux' is undefined, 'sfi' gets set to 0, a
 ec> Number, which does not have the '.trim()' method. Wrap that 0 in quotes on
 ec> line 80 and this particular problem should go away.

 ec> Also, if you wanted to, you could also shorten things a bit by doing
 ec> something like:

 ec> var sfi = solardata.solarflux || '0';
 ec> var sfi_int = parseInt(sfi);
 ec> var ai = solardata.aindex || 'No Data';
 ec> // etc.

 ec> That would be like a shorter version of:

 ec> var sfi = (typeof solardata.solarflux == 'undefined' ? '0' :
 ec> solardata.solarflux);

 ec> Which is a shorter version of:

 ec> var sfi = solardata.solarflux;
 ec> if (sfi == undefined) {
 ec> var sfi = '0';
 ec> }

You make it look so easy! Thanks man, that's incredibly helpful, I really
appreciate it. I'm learning lots playing with this stuff. I had a feeling, but
I wasn't sure. 

Updates imminent :-)

~KenDB3

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