I am trying to write a convenience wrapper for console.log, and I would like to print any variables passed in along with their contents.
Can I turn a variable name into a string in js?
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You mean, pass variables to a function as parameters and get the names of these variables? If so, it's not possible. It doesn't even make sense to write something like: myvariable.name. I don't get itDelta– Delta2013-09-29 04:59:22 +00:00Commented Sep 29, 2013 at 4:59
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I don't think I understand your question.Sethen– Sethen2013-09-29 05:03:52 +00:00Commented Sep 29, 2013 at 5:03
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1No, it is not possible.Joe Simmons– Joe Simmons2013-09-29 05:14:07 +00:00Commented Sep 29, 2013 at 5:14
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2 Answers
Assuming you want something like this:
function Log(data)
{
console.log(input variable name, data);
}
Then I don't think it is possible:
For convenience.. you could do something like
console.log({ "your variable name": your variable});
Which turns the input to an object that does contain the variable name you want to log. A little more typing, but perhaps makes the console output more readable.
Comments
There is a possibility. And here is how
var passed_variable = '65'; // The actual variable
var varname = 'passed_variable'; // The name of the variable in another variable
Now, pass the varname around but not the actual variable. When you need to the value of the variable you can simply do :
console.log(varname, ' : ', window[varname]); // Outputs, passed_variable : 65
I hope you find a way not to use this. :)
10 Comments
John Dvorak
unless
passed_variable resides in the global space, it won't be visible as window[varname]. And I don't want to have to put my variables in the global scope in order to log them.John Dvorak
and, of course, prefixing something with
var is something you do when you don't want it to end up in the global scope - in which case the log explicitly won't work (unless the code itself is in global scope, in which case the var keyword is merely pointless)
Starx
@JanDvorak, Yeah the implication is it being in a global scope.
John Dvorak
which
var does the exact opposite of. Even if this is fixed, though, it's still a bad way to do your average-day logging.Starx
@JanDvorak No
var used inside a function or scope limiter does that. |