html上传图片之前在网页预览实现-CFANZ编程社区

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<title>preview image</title>
</head>

<body>
<form>
    <input type="file">
</form>

<script src="/static/js/jquery.min.js"></script>
<script>
    $('input[type="file"]').change(function(e){
        reader = new FileReader();
        reader.readAsDataURL(e.target.files[0]);
        reader.onload = function(){
            $('body').append($('<img />', {src: reader.result}));
        };
    });
</script>
</body>
</html>