log

Writes specified data to the trace. If the first argument is a formatted string, the output will be formatted according to it. Data is any of the following types: string, number, boolean, array, and object.

Parameters	Description
format	Optional. If the first argument is a formatted string, the output will be formatted according to it.
dataN	Any of the types: string, number, boolean, array, object.

Example

console.log("hello", "goodbye", [1,2,3]);

hello", "goodbye", [1,2,3]

Example

var name = "Niki";
var course = "Design";
var courseNumber = 101;

console.log("Student %s is taking %s %d course.", name, course, courseNumber);

Student Niki is taking Design 101 course.