Javascript Tutorial 19 Booleans

Everything With a “Real” Value is True:

• 100
• 3.14
• -15
• “Hello”
• “false”
• 7 + 1 + 3.14
• 5 < 6

Everything Without a “Real” Value is False:

• 0 (zero) is false
• ”” (empty string) is false
• undefined is false
• null is false
• NaN is false