JavaScript Switch

JavaScript switch statement.

The JavaScript switch statement is used to check and perform different actions based on the different conditions. It is much like an if-else statement, but it can be used to execute one code from multiple expressions.

The JavaScript switch statement examples are given below.

switch(expression) {
case case1:
    // execute code block
    break;
case case2:
    // execute code block
    break;
default:
    // execute code block if nothing matched 
}

let bestProgrammingLang = "JavaScript";

switch(bestProgrammingLang) {
    case "JavaScript":
    console.log("JavaScript Lover!");
    break;
    case "CSharp":
    console.log("CSharp Lover!");
    break;
    default:
    console.log("Not sure yet!");
}

//Output: "JavaScript Lover!"

let bestProgrammingLang = null;

switch(bestProgrammingLang) {
    case "JavaScript":
    console.log("JavaScript Lover!");
    break;
    case "CSharp":
    console.log("CSharp Lover!");
    break;
    default:
    console.log("Not sure yet!");
}

//Output: "Not sure yet!"