Is the semicolon optional in JavaScript code?

• Yes, semicolons are optional in JavaScript code. However, it is recommended to use them to make your code more readable and to avoid errors.

• JavaScript uses a feature called Automatic Semicolon Insertion (ASI) to insert semicolons automatically in some cases. For example, if you have two statements on separate lines, ASI will automatically insert a semicolon between them. However, ASI is not perfect and can sometimes insert semicolons in the wrong place, which can lead to errors.

• To avoid errors, it is best to use semicolons explicitly. This will make your code more readable and will help to prevent errors.

• Here are some examples of how to use semicolons in JavaScript:

    // This is correct

    console.log("Hello");

    console.log("World");

    // This is also correct, but it is better to use a semicolon

    console.log("Hello");

    ;

    console.log("World");

• To summarize, while semicolons are technically optional in JavaScript code, it's generally a good idea to include them to help avoid potential issues with automatic semicolon insertion and to promote code consistency and readability.