카테고리 없음

JS FileReader (외부이미지 업로드)

Canyi 2022. 10. 31. 14:04 

<!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>외부 파일 드롭</title>
        <style>
            #dropArea {
                margin: auto;
                width: 1024px;
                height: 768px;
                border: 5px solid black;
                margin-top: 30px;
            }
        </style>
    </head>
    <body>
        <h1>이미지 요소 드래그 앤 드롭</h1>
        <div id="dropArea" ondragover="dragOver(event)" ondrop="drop(event)"></div>

        <div id="result"></div>
        <script>

            var dropArea = document.getElementById("dropArea");
            var dropImage = document.createElement("img");

            function dragOver(event) {
                event.preventDefault();
            }

            //드롭 시작
            function drop(event) {

                var file = event
                    .dataTransfer
                    .files[0];
                var reader = new FileReader();

                reader.onload = (function (theFile) {
                    return function(event){
                        alert("ondrop");
                        dropImage.src = event.target.result
                        dropArea.appendChild(dropImage);
                    }
                })(file);

                reader.readAsDataURL(file);
                event.preventDefault();

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