Logical Operators

The logical operators for AND (&&) and OR (||) are used to combine simple relational statements into more complex expressions. The NOT (!) operator is used to negate a boolean statement.
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let test = false;
function setup() {
  createCanvas(720, 360);
  background(126);
  for (let i = 5; i <= height; i += 5) {
    // Logical AND
    stroke(0);
    if (i > 35 && i < 100) {
      line(width / 4, i, width / 2, i);
      test = false;
    }
    // Logical OR
    stroke(76);
    if (i <= 35 || i >= 100) {
      line(width / 2, i, width, i);
      test = true;
    }
    // Testing if a boolean value is "true"
    // The expression "if(test)" is equivalent to "if(test == true)"
    if (test) {
      stroke(0);
      point(width / 3, i);
    }
    // Testing if a boolean value is "false"
    // The expression "if(!test)" is equivalent to "if(test == false)"
    if (!test) {
      stroke(255);
      point(width / 4, i);
    }
  }
}
 
 
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Language Settings

Logical Operators
