과제(간단한 이미지 슬라이드)


<!DOCTYPE html>
<html lang="ko">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title></title>
    <style>
        body {
            margin: 0;
        }
        .row {
            overflow: hidden;
        }
        .slide {
            width: 300vw;
           transition: all 2s;
        }
        .item {
            width: 100vw;
            float: left;
        }
        .img {
            background-color: red;
            width: 100vw;
            height: 500px;
            box-sizing: border-box;
            border: solid black 20px;
        }
    </style>
</head>
<body>
    <div class="row">
        <div class="slide">
            <div class="item">
                <div class="img">1</div>
            </div>
            <div class="item">
                <div class="img">2</div>
            </div>
            <div class="item">
                <div class="img">3</div>
            </div>
        </div>
    </div>
    <button class="btn1"> < </button>
    <button class="btn2"> > </button>
    <script>
        var loc = 0
        document.querySelector('.btn1').addEventListener('click', function(){
            if (loc < 0){
                loc += 100;
                document.querySelector('.slide').style.transform = `translate(${loc}vw)`;
            }
        });
        document.querySelector('.btn2').addEventListener('click', function(){
            if (loc > -200) {
                loc -= 100;
            }
            document.querySelector('.slide').style.transform = `translate(${loc}vw)`;
        });
    </script>
</body>
</html>