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图片上传后即时预览

2024-10-20 13:51:39   202人阅读

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
        //设置图片上传后预览的div样式
        <style type="text/css">
             #preview,
             .img,
             img {
               width: 200px;
               height: 200px;
             }
             
             #preview {
               border: 1px solid #000;
             }
        </style>
    </head>
    <body>
        <div id="preview"></div>
        <input type="file" onchange="preview(this)"/>
        //图片上传和预览
        <script type="text/javascript">
          function preview(file) {
              var prevDiv = document.getElementById(‘preview‘);

              if (file.files && file.files[0]) {
                var reader = new FileReader();
                
                reader.onload = function(evt) {
                  prevDiv.innerHTML = ‘ <img src="http://www.mamicode.com/‘ + evt.target.result + ‘" /> ‘;
                }

                reader.readAsDataURL(file.files[0]);

              } else {

                prevDiv.innerHTML = ‘<div class="img" style="filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src=http://www.mamicode.com/‘‘ + file.value + ‘/‘"><div>‘;

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

 

图片上传后即时预览


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