3.html

<!DOCTYPE html>
<html>
    <head>
        <title>WEB1-HTML</title>
        <meta charset="utf-8">
        <script src="color.js"></script>
    </head>
    
    <body>
        <h1><a href="index.html">WEB</a></h1>

        <input id="night_day" type="button" value="night" onclick="nightDayHandler(this)
        ">

        <ol>
            <li><a href="1.html" target="_blank" title="HTML5 spec" >HTML</a></li>
            <li><a href="2.html">CSS</a></li>
            <li><a href="3.html">JavaScript</a></li>
        </ol>
        

        <h2>JavaScript란 무엇인가</h2>        
        <p style="margin-top:140px">
            JavaScript (/ˈdʒɑːvəskrɪpt/), often abbreviated as JS, is a programming language that is one of the core technologies of the World Wide Web, 
            alongside HTML and CSS. As of 2023, 98.7% of websites use JavaScript on the client side for webpage behavior,
            [10] often incorporating third-party libraries. 
            All major web browsers have a dedicated JavaScript engine to execute the code on users' devices.  
        </p>
        
        <img src="smp_pict.jpg" width="100%">
        
    </body>
</html>