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  • 读取input:file的路径并显示本地图片的方法

    1. <!doctype html>   
      <html>   
      <head>   
      <meta content="text/html; charset=UTF-8" http-equiv="Content-Type" />   
      <title>Image preview example</title>   
      <script type="text/javascript">   
      var loadImageFile = (function () {   
      if (window.FileReader) {   
      var oPreviewImg = null, oFReader = new window.FileReader(),   
      rFilter = /^(?:image/bmp|image/cis-cod|image/gif|image/ief|image/jpeg|image/jpeg|image/jpeg|image/pipeg|image/png|image/svg+xml|image/tiff|image/x-cmu-raster|image/x-cmx|image/x-icon|image/x-portable-anymap|image/x-portable-bitmap|image/x-portable-graymap|image/x-portable-pixmap|image/x-rgb|image/x-xbitmap|image/x-xpixmap|image/x-xwindowdump)$/i;   
        
        
      oFReader.onload = function (oFREvent) {   
      if (!oPreviewImg) {   
      var newPreview = document.getElementById("imagePreview");   
      oPreviewImg = new Image();   
      oPreviewImg.style.width = (newPreview.offsetWidth).toString() + "px";   
      oPreviewImg.style.height = (newPreview.offsetHeight).toString() + "px";   
      newPreview.appendChild(oPreviewImg);   
      }   
      oPreviewImg.src = oFREvent.target.result;   
      };   
        
        
      return function () {   
      var aFiles = document.getElementById("imageInput").files;   
      if (aFiles.length === 0) { return; }   
      if (!rFilter.test(aFiles[0].type)) { alert("You must select a valid image file!"); return; }   
      oFReader.readAsDataURL(aFiles[0]);   
      }   
        
        
      }   
      if (navigator.appName === "Microsoft Internet Explorer") {   
      return function () {   
      alert(document.getElementById("imageInput").value);   
      document.getElementById("imagePreview").filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = document.getElementById("imageInput").value;   
        
        
      }   
      }   
      })();   
      </script>   
      <style type="text/css">   
      #imagePreview {   
       160px;   
      height: 120px;   
      filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale);   
      }   
      </style>   
      </head>   
      <body>   
      <div id="imagePreview">   
      </div>   
      <form name="uploadForm">   
      <p>   
      <input id="imageInput" type="file" name="myPhoto" onchange="loadImageFile();" /><br />   
      <input type="submit" value="Send" /></p>   
      </form>   
      </body>   
      </html>   
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  • 原文地址:https://www.cnblogs.com/wangqc/p/input_file.html
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