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javascriptjqueryfunctionvariablesnull
Dan
Dan

Reputation: 1192

JavaScript variable becomes null when toUpperCase() applied

Modifying a jQuery plugin, I have lines of code as follows:

var currentread = (self).find('.c'+a).html();
//currentread = currentread.toUpperCase();
$('#output').html(currentread);

With the middle line commented out, the code works fine. The contents of the div with the class 'c[1-n]' is displayed in #output. Uncommenting the middle line to convert this to upper case, however, generates the error 'currentread is null' for that line.

I must be doing something stupid here, but this doesn't seem to make sense. Any idea?

Upvotes: 2

Views: 5013

Answers (1)

Douglas
Douglas

Reputation: 37761

Is is simply the case that currentread is null? You could change it to:

currentread = (currentread || "").toUpperCase()

so that toUpperCase is always called on a string.

Upvotes: 9

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