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JavaScript JavaScript Loops, Arrays and Objects Tracking Data Using Objects Using `for in` to Loop Through an Object's Properties

Posted by nabilmakhout
nabilmakhout
18,082 Points

console.log difference between , and +

In this video he used the ,(comma) to concatenate strings to each other instead of +. What's the difference between the two? When would I use + or ,?

1 Answer

John Breslin
John Breslin
16,963 Points

The function console.log is set up to loop and print each argument passed to it, one after another. If they were pluses, it would be sending one long argument to the function instead of three short ones. It's not technically concatenation, but the end result is the same.

Ryan Broughan
Ryan Broughan
12,742 Points

With the +, console.log() prints the 'skills' section as a joined list. Whereas, with the comma, it prints an array. So the end result isn't quite the same.