<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>

	<body>
		<input type='file' accept='text/plain' onchange='openFile(event)'><br>
		<div id="output"></div>
	</body>
	<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
	<script type="text/javascript">
		var openFile = function(event) {
			var input = event.target;
			var reader = new FileReader();
			reader.onload = function() {
				if(reader.result) {
					//显示文件内容
					$("#output").html(reader.result);
				}
			};
			reader.readAsText(input.files[0]);
		};
	</script>

</html>

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