千寻前端

js校验文件唯一性

2017-05-17 11:02:25javascript, md5js
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>文件唯一性</title>
</head>
<body>
<input type="file">
    <script src="md5.js"></script>
    <script>
        //https://www.npmjs.com/package/js-md5
    	var input  = document.querySelector('input');
    	input.addEventListener('change', function () {
    		var file=  this.files[0];
    		var reader = new FileReader();
    		reader.readAsArrayBuffer(file);
    		reader.addEventListener('load',function (e) {
    			var buffer = e.target.result;
    			var md = md5(buffer);
    			console.log(md);
    		});
    	});
    </script>
</body>
</html>