JS

[JS] 자바스크립트 html 요소 추가하기 (createElement, appendChild)

져니져니95 2021. 3. 23. 15:54

2020.03.22(월)

블록체인 기반 핀테크 및 응용 SW 개발자 양성과정 일곱째날_오후

 

오늘 자바스크립트 처음 배웠는데 굉장히 많은걸 배운 느낌이다ㅠ

머릿속에서 모든게 정립이 안된 느낌,,,

용어 정립도 하나도 안됐다ㅋㅋㅋㅋㅋㅜㅜㅜㅜ

<!DOCTYPE html>
<html lang="en">
<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>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        a{
            text-decoration: none;
        }
        ul,li{
            list-style: none;
        }
        #wrap{
            width: 100%;
        }
        #header{
            height: 200px;
            background-color: green;
            padding: 20px;
            color: honeydew;
            position: relative;
        }
        #title{
            text-align: center;
        }
        #searching{
            width: 450px;
            margin: 0 auto;
            margin-top: 100px;
        }
        .searchingBox{
            width: 350px;
            height: 30px;
            background-color: honeydew;
            border-radius: 5px;
            text-align: center;
        }
        .searchingBtn{
            display: inline-block;
            width:40px;
            padding: 5px;
            background-color: honeydew;
        }   
        #content{
            text-align: center;
        }
        #content>li{
            margin-top: 30px;
        }
    </style>
</head>
<body>
    <div id="wrap">
        <div id="header">
            <div id="title">
                <h1>to do list</h1>
            </div>
            <div id="searching">
                <input type="text" id="Box_input" placeholder="글자글자" class="searchingBox"> <!--card_text-->
                <input type="button" value="★" class="searchingBtn" onclick="btnEvent();">
            </div>
        </div>
        <ul id="content">
            <li>sample1</li>
            <li>sample2</li>
            <li>sample3</li>
        </ul>
    </div>
    <script type="text/javascript">
    function btnEvent(){
        card_text = document.querySelector('#Box_input');
        cardList = document.querySelector('#content');
        
        liElement = document.createElement('li');
        liElement.innerHTML = document.querySelector('#Box_input').value;
        document.querySelector('#content').appendChild(liElement);
    }

    
    </script>
</body>
</html>

        liElement = document.createElement('li'); -> li 엘리먼트 추가생성
        liElement.innerHTML = document.querySelector('#Box_input').value; -> li엘리먼트 안에 Box_input안의 내용 값 넣어줌
        document.querySelector('#content').appendChild(liElement); -> <li>????</li> 꼴의 내용이 sample 3 밑에 추가로  생성