JavaScript Booleans
JavaScript Booleans
In JavaScript, a Boolean value represents either true or false. There are two Boolean values: true and false. Boolean values are commonly used in JavaScript to control the flow of a program, for example, to determine whether a condition is true or false.
Boolean values can be created in several ways. For example, you can create a Boolean variable and set its value to true or false:
const isRaining = true;
const isSunny = false;
You can also use comparison operators to create Boolean values. Comparison operators are used to compare two values and return a Boolean value. For example, the > operator returns true if the left operand is greater than the right operand, and false otherwise:
const x = 5;
const y = 10;
const isXGreaterThanY = x > y; // false
You can also use logical operators to create Boolean values. Logical operators are used to combine two or more Boolean values and return a Boolean value. There are three logical operators in JavaScript: && (and), || (or), and ! (not). For example, the && operator returns true if both the left and right operands are true, and false otherwise:
const isRaining = true;
const isCold = false;
const shouldStayInside = isRaining && isCold; // false
In this example, the shouldStayInside variable is assigned the value false because both isRaining and isCold are not true.