有时候，想让自己封装的js干净轻巧，不带图片文件什么的，那图片怎么处理呢？带着这个问题，我做了一下试验，发现也不是很难。现在把简单的过程记录下来，以备后用。
<!DOCTYPE HTML>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>test js option base64 picture</title>
<script type="text/javascript" src="./Content/jquery-2.2.0.js"></script>
<script type="text/javascript">
var icon = 'data:image/gif;base64,R0lGODlhBAABAIABAMLBwfLx8SH5BAEAAAEALAAAAAAEAAEAAAICRF4AOw==';
function main() {
return;
var img = '<img id="testImg" src="' + icon + '"/>';
$('#canvas').append(img);
}
</script>
</head>
<body onload=" main();">
<div id="canvas" style=" 50px; height: 50px; background-position-y:50px;background-position-x:0;" ></div>
<hr>
<div id="info" onclick="test();">页面载入中，请稍候...</div>
<script type="text/javascript">
function test() {
$('#canvas').css({ backgroundImage: 'url(' + icon + ')' });
}
</script>
</body>
</html>
下面附带c#取图片base64串的方法：
public static string getImageStr(string imgFile)
{
var stream = File.Open(imgFile, FileMode.Open);
byte[] buff = new byte[stream.Length];
stream.Read(buff, 0, (int)stream.Length);
stream.Dispose();
return Convert.ToBase64String(buff);
}