It would be nice to have a super quick way to do this:
"console.log("var: " + var)"?
Tried this, but not sure if there's a way to get a variable name as a string once it's been passed in, or convert the name string to a reference to the variable...
var mLog = function(varNameStr){
console.log(varNameStr + ": " + _____);
}
EDIT: Judging by the results of googling "get name string of a variable js", it looks like there's no easy way to grab the name string of a variable from the reference (You have to create hash tables or other structures that make it not worthwhile.)
So, the only possible solution would be to convert a string into a reference to the variable. Is that possible in JS?
The following will do the trick. Pass it a variable name in string form.
var mLog = function(varStr){
console.log(varStr + ": " + eval(varStr));
}
Example:
> var strVar = 'A string variable';
> mLog('strVar');
< strVar: A string variable
> var arrVar = [1,2,3];
> mLog('arrVar');
< arrVar: 1,2,3
There is no way to "extract" the variable name, since variables aren't actually data. The closest thing you could do is use it for objects. Something like:
var obj= {
prop: 'value'
};
function mLog(object, prop) {
console.log(prop + ': ' + object[prop];
}
mLog(obj, 'prop');
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