Conditional Logic

In JavaScript, you can use conditional statements to execute different code based on different conditions.

The if statement is used to execute a block of code if a condition is true.

Example:

let x = 10;
if (x > 5) {
  console.log("x is greater than 5");
}

The if statement can be extended with an else clause to execute a different block of code if the condition is false.

Example:

let x = 10;
if (x > 5) {
  console.log("x is greater than 5");
} else {
  console.log("x is not greater than 5");
}

The if statement can also be extended with one or more else if clauses to test multiple conditions.

Example:

let x = 10;
if (x > 20) {
  console.log("x is greater than 20");
} else if (x > 10) {
  console.log("x is greater than 10");
} else {
  console.log("x is not greater than 10 or 20");
}

In JavaScript, you can also use the switch statement to execute different code based on the value of a variable.

Example:

let x = "hello";
switch (x) {
  case "hello":
    console.log("x is hello");
    break;
  case "world":
    console.log("x is world");
    break;
  default:
    console.log("x is neither hello nor world");
}

Conditional logic is an important part of programming, and it allows you to control the flow of your program and to execute different code based on different conditions.