Code Editor
Introduction to JavaScript

Review Types and Operators

Let's take one more glance at the concepts we just learned:

  • There are three essential data types in JavaScript: strings, numbers, and booleans.
  • We can write out anything to the console with console.log.
  • We can do math with operators like +, -, *, and /.
  • We can find the remainder after dividing two numbers with a modulus: %.
  • We can generate a random number with Math.random, then make it a whole number with Math.floor.
  • We write a single line comment with // and a multi-line comment with /* and */.

You've just finished one of the toughest parts of this course, nice work!


Feel free to review the concepts you just learned in the code editor and console.

When you're ready, click 'Up Next'.

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