How do you write a comment in javascript

In addition to guides like this one, we provide simple cloud infrastructure for developers. Inline Comments Single-line comments are referred to as inline comments when they appear at the end of a line of code.

Comments can be immensely helpful in explaining the intent of what your code is or should be doing. Not only will this help you remember it later on, but if you someone else views your code, they will also be able to understand the code hopefully!

This is referred to as "commenting out code". If you are using a specialized text editor for programming, be sure that you check and see if it has an option to easily comment out many lines of code! Comments are annotations in the source code of a program that are ignored by the interpreter, and therefore have no effect on the actual output of the code.

This lesson will teach you how to create two types of comments in JavaScript: Conclusion JavaScript code is interpreted by the computer, but will always be read by other programmers, including your future self.

Taking the time to leave proper annotation on complicated sections of code will pay dividends in the future, making it easier for you and collaborators to understand the intent of the code you have written. We hope you find this tutorial helpful. Another great thing about comments is the ability for comments to remove bits of code from execution when you are debugging your scripts.

Commenting out code should only be done during testing purposes. As you progress as a JavaScript developer, you will be looking to answer the intent, or the why behind the code, as opposed to the how or what.

Both single-line and multi-line comments are written above the code they are designated to explain, as demonstrated in this "Hello, World! You may also use it to toggle between code to test different results. Commenting Out Code for Testing Comments can also be used to quickly and easily prevent execution of code for testing and debugging purposes.

Commenting your code early on will reinforce good programming habits throughout your career to avoid these issues later on. Creating Multi-line Comments Although a single line comment is quite useful, it can sometimes be burdensome to use when disabling long segments of code or inserting long-winded comments.

Block Comments Block-level comments, or multi-line comments, are long-form annotations used to introduce and explain a section of code. Outdated comments can be more of a detriment than no comment at all, so remember to maintain and update comments regularly along with everything else.

These types of comments are great for commenting out single lines of code and writing small notes. Quite often text editors have the ability to comment out many lines of code with a simple key stroke or option in the menu.

When working out the logic of a program, commenting out code can prove to be helpful as you determine where bugs are or assess the lines of code that offer the most utility. If you are a beginner in JavaScript, you may write as much as necessary to learn and comprehend the code you write.Learn how to insert javascript comments with's Javascript Comments lesson.

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. // This is a single line JavaScript comment"I have comments in my JavaScript code.

How To Write Comments in JavaScript. Whether you're working with a team or on your own, you will need to learn to properly comment and structure your code for human readers.

If you are a beginner in JavaScript, you may write as much as necessary to learn and comprehend the code you write. Comments are an important part of your JavaScript application. While you may easily remember what an application does for a day or two after you write it, trying to figure out what complex applications are doing one or two years later can prove difficult.

Sometimes you have more than one or two lines worth of comment to write. In this. Definition and Usage. The comment tag is used to insert comments in the source code.

Comments are not displayed in the browsers. You can use comments to explain your code, which can help you when you edit the source code at a later date. If you've enabled auto close, you can override the a closed thread, which re-opens it for comments.

To do this, go to URL Settings and turn on Override Auto Close. Then set the desired closure state for the URL you're moderating.

I see in some posts that people frown upon using in javascript when writing dynamic HTML. Why is this? and what is the correct way?

"I see you're trying to write HTML using JavaScript. You should totally drop that and use jQuery!" add a comment | 12 Answers active oldest votes.

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How do you write a comment in javascript
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