**Multi-line Comments**  
Multiline comments have a purpose same as single-line comments.  
Multiline comments start with two symbols: ` /*`. To end the comment, we use these symbols `*/ ` again. Everything in these symbols will be commented out.

/* class  WebDeveloper{
    constructor(firstName, lastName) {
        this.firstName = firstName;
        this.lastName = lastName;
    }
}
let me = new WebDeveloper('Robin',  'Wieruch');
console.log(me);
*/

### Summary:

-   Comments are used to illustrate the code and make the program more clear for developers.
-   Commented part is not implemented by the browser.
-   We can comment just a line of code.
-   We can comment entire block of code

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The syntax of the JavaScript programming language is the set of rules that defines how a JavaScript program will be written and interpreted (by both the runtime system and by human readers).

JavaScript is dynamically typed (also called loosely typed) scripting language. That is, in javascript variables can receive different data types over time. Datatypes are basically typed of data that can be used and manipulated in a program.

Commenting in JavaScript. Multi-line Comments

解答

Summary: