Question: Javascript Comment Convention?

How do you write comments in JavaScript?

To create a single line comment in JavaScript, you place two slashes “//” in front of the code or text you wish to have the JavaScript interpreter ignore. When you place these two slashes, all text to the right of them will be ignored, until the next line.

What is the JavaScript and syntax and conventions?

Coding conventions are style guidelines for programming. They typically cover: Naming and declaration rules for variables and functions. Rules for the use of white space, indentation, and comments.

What is naming convention in JavaScript?

Here are rules JavaScript has for naming variables: Variable names cannot contain spaces. Variable names must begin with a letter, an underscore (_) or a dollar sign ($). Variable names can only contain letters, numbers, underscores, or dollar signs. Variable names are case-sensitive.

What are the JavaScript guidelines?

General JavaScript guidelines

  • For JavaScript we use expanded syntax, with each line of JS on a new line, the opening brace of a block on the same line as its associated statement, and the closing brace on a new line.
  • Use JS-style comments to comment code that isn’t self-documenting:
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What is JavaScript comment?

The JavaScript comments are meaningful way to deliver message. It is used to add information about the code, warnings or suggestions so that end user can easily interpret the code. The JavaScript comment is ignored by the JavaScript engine i.e. embedded in the browser.

How do I comment in node JS?

The first way is the single-line comment by using two forward slashes ( // ).

Is JavaScript hard to learn?

JavaScript isn’t exactly hard to learn, but if it’s your first programming language adjusting to the mindset required for programming can take a lot of time. JavaScript is actually one of the easier programming languages to start with. In fact, there are several resources available to help you learn it with ease.

Is JavaScript enabled in Chrome?

On Google Chrome, JavaScript is enabled by default, but you can verify if it works through the Settings menu. To reveal the Settings menu, simply click on three tiny black dots at the top-right corner of your Chrome window. Once you’re in this section, scroll down to find the JavaScript option and then click it.

What does %= mean in JavaScript?

%= Get the modulus of left operand divide by right operand and assign resulted modulus to the left operand. Example: Assignment operators.

Should JS files be uppercase?

File names must be all lowercase and may include underscores ( _ ) or dashes ( – ), but no additional punctuation. Follow the convention that your project uses. Filenames’ extension must be. js.

How do you code JavaScript on Google?

Activate JavaScript in Google Chrome

  1. On your computer, open Chrome.
  2. At the top right, click More. Settings.
  3. Click Privacy and security. Site settings.
  4. Click JavaScript.
  5. Turn on Allowed (recommended).
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What is the meaning of naming convention?

A naming convention is a convention (generally agreed scheme) for naming things. Conventions differ in their intents, which may include to: Allow useful information to be deduced from the names based on regularities.

What is current version of JavaScript?

ES2015 is the latest version of JavaScript programming language. It is the first major upgrade to JavaScript since 1997. It was approved in June 2015 by ECMA international, an association responsible for approving ECMA standards which programming languages like JavaScript, CoffeeScript and TypeScript follows.

What is standard JavaScript?

JavaScript (JS) is a lightweight, interpreted, or just-in-time compiled programming language with first-class functions. The standards for JavaScript are the ECMAScript Language Specification (ECMA-262) and the ECMAScript Internationalization API specification (ECMA-402).

How do you name a constant in JavaScript?

ES6 provides a new way of declaring a constant by using the const keyword. The const keyword creates a read-only reference to a value. By convention, the constant identifiers are in uppercase. Like the let keyword, the const keyword declares blocked-scope variables.

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