Truthy Falsy Assignment

Two important aspects of logical operators in JavaScript is that they evaluate from left to right, and they short-circuit. What this means is that when JavaScript evaluates an OR expression, if the first operand is true, JavaScript will short-circuit and not even look at the second operand. The following video shows an example of how logical operators can be used in conjunction with truthy and falsy values to assign values to variables.


  1. Click the play button to watch the video lesson.
  2. Watch the lesson as many times as needed.
  3. Code along with the instructor using the integrated code editor in the center of your screen.
  4. You can use the Run button beneath the code editor to test your code.
  5. Output from the code that you have written will appear in the panel on the right side of your screen.

If you get stuck or need assistance, you can click the button below to connect with a tutor. 

For additional questions or technical support, email