Page 48 - JavaScript

explicit return value.

Logging variables

console.log() can be used to log variables of any kind; not only strings. Just pass in the variable
that you want to be displayed in the console, for example:

var foo = "bar";
console.log(foo);

This will log the following to the console:

If you want to log two or more values, simply separate them with commas. Spaces will be
automatically added between each argument during concatenation:

var thisVar = 'first value';
var thatVar = 'second value';
console.log("thisVar:", thisVar, "and thatVar:", thatVar);

This will log the following to the console:

Placeholders

You can use console.log() in combination with placeholders:

var greet = "Hello", who = "World";

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