解决方法
尝试这个
<html>
<head>
<script type="text/javascript">
function runProgram()
{
var shell = new ActiveXObject("WScript.Shell");
var appWinMerge = "\"C:\\Program Files\\WinMerge\\WinMergeU.exe\" /e /s /u /wl /wr /maximize";
var fileLeft = "\"D:\\Path\\to\\your\\file\"";
var fileRight= "\"D:\\Path\\to\\your\\file2\"";
shell.Run(appWinMerge + " " + fileLeft + " " + fileRight);
}
</script>
</head>
<body>
<a href="javascript:runProgram()">Run program</a>
</body>
</html>