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index.html
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<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.0.0/core.min.js" integrity="sha512-PQsdzDthPKtp230uD7lunTQw6CwNTPnd5LP3e3/+afg9cNkrL7UsfWXT3EW5Ar9XZ5SdADcPDXs1BAWNa9OZ7Q==" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.0.0/md5.min.js" integrity="sha512-VLDQac8zlryHkFvL1HIH9KKjkPNdsNLEXM/vImKGMaNkEXbNtb+dyhnyXFkxai1RVNtwrD5L7vffgtzYzeKI3A==" crossorigin="anonymous"></script>
</head>
<body>
<input type="file" id="input" onchange="calculateMD5()">
<div id="md5-result"></div>
<script>
const input = document.getElementById("input");
const resultArea = document.getElementById("md5-result");
function calculateMD5() {
const fileName = this.files[0];
const reader = new FileReader();
reader.onload = function() {
const rawData = reader.result;
const hash = CryptoJS.MD5(CryptoJS.enc.Latin1.parse(rawData));
resultArea.textContent = 'MD5 Checksum: ' + hash.toString();
}
reader.readAsBinaryString(fileName);
}
input.addEventListener('change',calculateMD5, false);
</script>
</body>
</html>