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      1. <\/code> tag. This method is suitable for small scripts on a single page. <\/p>\n

        b) External JavaScript<\/strong><\/p>\n

        External JavaScript refers to writing JavaScript code into a separate file with the extension .js<\/code>, and then linking it to the HTML file through the

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        Home Web Front-end JS Tutorial Javascript - Introduction

        Javascript - Introduction

        Jan 21, 2025 pm 02:37 PM

        JavaScript: the soul language of web development

        JavaScript is the most popular programming language in the world and the cornerstone of the Web. It is easy to learn, is a dynamically typed programming language, and is widely used by developers to create interactive web pages.

        Javascript - Introduction

        Reason for learning JavaScript:

        JavaScript is one of three languages ??that all web developers must master:

        1. HTML: Define web page content (structure)
        2. CSS: Specify web page layout (style)
        3. JavaScript: Programming web page behavior (function)

        JavaScript is supported by almost all browsers.

        Reference:http://miracleart.cn/link/751d8d469b4f5508690047d65cbdac1b

        Application fields of JavaScript:

        • Web Development
        • Front-end and back-end development
        • Game Development
        • Desktop App
        • Live Apps
        • AI and Machine Learning

        How to use JavaScript?

        There are two main ways to introduce JavaScript: internal JavaScript and external JavaScript.

        a) Internal JavaScript

        Internal JavaScript refers to embedding JavaScript code directly within the <script> tag in the HTML file. The tag can be placed in the <head> or <body> tag. This method is suitable for small scripts on a single page.

        b) External JavaScript

        External JavaScript refers to writing JavaScript code into a separate file with the extension .js, and then linking it to the HTML file through the <script> attribute of the src tag.

        Syntax:

        (an example of <script src="your_script.js"></script> should be added here)

        JavaScript functions and events:

        • A function is an executable block of JavaScript code that can be executed when "called".
        • A function is a set of instructions or a reusable block of code that performs a specific task and is given a name.
        • Functions are defined using the function keyword.

        For example, a function can be called when an event occurs (such as the user clicking a button).

        Event: An event is some kind of action or event that occurs in the browser.

        Example:

        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Javascript</title>
        <script>
            function payilagam(){
                document.getElementById("welcome").innerHTML = "Welcome to Payilagam";
            }
        </script>
        <h1></h1>
        <p>Output:</p>
        <p><button onclick="payilagam()">點(diǎn)擊我</button></p>
        <p id="welcome"></p>
        
        <p><img src="/uploads/20250121/1737440961678f3ec19d3b4.jpg" alt="Image description" width="800" height="203" loading="lazy"></p>

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