Home Web Front-end JS Tutorial How to make multi-line comments in javascript

How to make multi-line comments in javascript

Apr 09, 2021 pm 03:09 PM
javascript

How to make multi-line comments in javascript: first create an HTML sample file; then add a script tag in the head tag; then write javascript code in the script tag; finally use "/*. ..*/" symbols can be used for multi-line comments.

How to make multi-line comments in javascript

The operating environment of this article: windows7 system, javascript1.8.5&&html5 version, Dell G3 computer.

js single-line and multi-line comment writing format

The role of comments is to improve the readability of the code and help yourself and others read and understand the JavaScript code you write. , the content of the annotation will not be displayed on the web page. Comments can be divided into two types: single-line comments and multi-line comments.

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<!DOCTYPE html>

<html>

    <head>

        <meta charset="utf-8">

        <title>JavaScript-注释很重要</title>

        <script type="text/javascript">

            document.write("我是单行注释&#39;//&#39;");//该语句在网页中输出的单行注释内容不展示

            document.write("我是多行注释&#39;/*注释内容*/&#39;");

            /*

            哈哈,我是多行注释

            神奇的js把我隐藏了,看不见

            记得养成良好的注释习惯

            */

        </script>

        <style type="text/css">

            div::selection{

                background-color: #00FFFF;

                /* color: #fff; */

            }

        </style>

    </head>

    <body>

        <div>html与css注释还记得如何书写吗</div>

        <!-- <div>html与css注释还记得如何书写吗</div> -->

    </body>

</html>

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Summary: The comment content is generally placed at or around the end of the statement that needs to be explained. For single-line comments, add the symbol "//" before the comment content. At the same time, multi-line comments start with "/*" and end with "* /"End, did you find that the multi-line comments of javascript are the same as the comments of css

[Recommended learning: javascript advanced tutorial]

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