您可以使用crypto-js。
我也建议使用SHA256，而不是MD5。
要通过NPM安装crypto-js：
npm install crypto-js
或者，您可以使用CDN并引用JS文件。
然后，要显示MD5和SHA256哈希，可以执行以下操作：
<script type="text/javascript"> var md5Hash = CryptoJS.MD5("Test"); var sha256Hash = CryptoJS.SHA256("Test1"); console.log(md5Hash.toString()); console.log(sha256Hash.toString());</script>此处的工作示例JSFiddle
还有其他一些JS函数会生成
MD5哈希，如下所述。
http://www.myersdaily.org/joseph/javascript/md5-text.html
http://pajhome.org.uk/crypt/md5/md5.html
function md5cycle(x, k) {var a = x[0], b = x[1], c = x[2], d = x[3];a = ff(a, b, c, d, k[0], 7, -680876936);d = ff(d, a, b, c, k[1], 12, -389564586);c = ff(c, d, a, b, k[2], 17, 606105819);b = ff(b, c, d, a, k[3], 22, -1044525330);a = ff(a, b, c, d, k[4], 7, -176418897);d = ff(d, a, b, c, k[5], 12, 1200080426);c = ff(c, d, a, b, k[6], 17, -1473231341);b = ff(b, c, d, a, k[7], 22, -45705983);a = ff(a, b, c, d, k[8], 7, 1770035416);d = ff(d, a, b, c, k[9], 12, -1958414417);c = ff(c, d, a, b, k[10], 17, -42063);b = ff(b, c, d, a, k[11], 22, -1990404162);a = ff(a, b, c, d, k[12], 7, 1804603682);d = ff(d, a, b, c, k[13], 12, -40341101);c = ff(c, d, a, b, k[14], 17, -1502002290);b = ff(b, c, d, a, k[15], 22, 1236535329);a = gg(a, b, c, d, k[1], 5, -165796510);d = gg(d, a, b, c, k[6], 9, -1069501632);c = gg(c, d, a, b, k[11], 14, 643717713);b = gg(b, c, d, a, k[0], 20, -373897302);a = gg(a, b, c, d, k[5], 5, -701558691);d = gg(d, a, b, c, k[10], 9, 38016083);c = gg(c, d, a, b, k[15], 14, -660478335);b = gg(b, c, d, a, k[4], 20, -405537848);a = gg(a, b, c, d, k[9], 5, 568446438);d = gg(d, a, b, c, k[14], 9, -1019803690);c = gg(c, d, a, b, k[3], 14, -187363961);b = gg(b, c, d, a, k[8], 20, 1163531501);a = gg(a, b, c, d, k[13], 5, -1444681467);d = gg(d, a, b, c, k[2], 9, -51403784);c = gg(c, d, a, b, k[7], 14, 1735328473);b = gg(b, c, d, a, k[12], 20, -1926607734);a = hh(a, b, c, d, k[5], 4, -378558);d = hh(d, a, b, c, k[8], 11, -2022574463);c = hh(c, d, a, b, k[11], 16, 1839030562);b = hh(b, c, d, a, k[14], 23, -35309556);a = hh(a, b, c, d, k[1], 4, -1530992060);d = hh(d, a, b, c, k[4], 11, 1272893353);c = hh(c, d, a, b, k[7], 16, -155497632);b = hh(b, c, d, a, k[10], 23, -1094730640);a = hh(a, b, c, d, k[13], 4, 681279174);d = hh(d, a, b, c, k[0], 11, -358537222);c = hh(c, d, a, b, k[3], 16, -722521979);b = hh(b, c, d, a, k[6], 23, 76029189);a = hh(a, b, c, d, k[9], 4, -640364487);d = hh(d, a, b, c, k[12], 11, -421815835);c = hh(c, d, a, b, k[15], 16, 530742520);b = hh(b, c, d, a, k[2], 23, -995338651);a = ii(a, b, c, d, k[0], 6, -198630844);d = ii(d, a, b, c, k[7], 10, 1126891415);c = ii(c, d, a, b, k[14], 15, -1416354905);b = ii(b, c, d, a, k[5], 21, -57434055);a = ii(a, b, c, d, k[12], 6, 1700485571);d = ii(d, a, b, c, k[3], 10, -1894986606);c = ii(c, d, a, b, k[10], 15, -1051523);b = ii(b, c, d, a, k[1], 21, -2054922799);a = ii(a, b, c, d, k[8], 6, 1873313359);d = ii(d, a, b, c, k[15], 10, -30611744);c = ii(c, d, a, b, k[6], 15, -1560198380);b = ii(b, c, d, a, k[13], 21, 1309151649);a = ii(a, b, c, d, k[4], 6, -145523070);d = ii(d, a, b, c, k[11], 10, -1120210379);c = ii(c, d, a, b, k[2], 15, 718787259);b = ii(b, c, d, a, k[9], 21, -343485551);x[0] = add32(a, x[0]);x[1] = add32(b, x[1]);x[2] = add32(c, x[2]);x[3] = add32(d, x[3]);}function cmn(q, a, b, x, s, t) {a = add32(add32(a, q), add32(x, t));return add32((a << s) | (a >>> (32 - s)), b);}function ff(a, b, c, d, x, s, t) {return cmn((b & c) | ((~b) & d), a, b, x, s, t);}function gg(a, b, c, d, x, s, t) {return cmn((b & d) | (c & (~d)), a, b, x, s, t);}function hh(a, b, c, d, x, s, t) {return cmn(b ^ c ^ d, a, b, x, s, t);}function ii(a, b, c, d, x, s, t) {return cmn(c ^ (b | (~d)), a, b, x, s, t);}function md51(s) {txt = '';var n = s.length,state = [1732584193, -271733879, -1732584194, 271733878], i;for (i=64; i<=s.length; i+=64) {md5cycle(state, md5blk(s.substring(i-64, i)));}s = s.substring(i-64);var tail = [0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0];for (i=0; i<s.length; i++)tail[i>>2] |= s.charCodeAt(i) << ((i%4) << 3);tail[i>>2] |= 0x80 << ((i%4) << 3);if (i > 55) {md5cycle(state, tail);for (i=0; i<16; i++) tail[i] = 0;}tail[14] = n*8;md5cycle(state, tail);return state;}function md5blk(s) { var md5blks = [], i; for (i=0; i<64; i+=4) {md5blks[i>>2] = s.charCodeAt(i)+ (s.charCodeAt(i+1) << 8)+ (s.charCodeAt(i+2) << 16)+ (s.charCodeAt(i+3) << 24);}return md5blks;}var hex_chr = '0123456789abcdef'.split('');function rhex(n){var s='', j=0;for(; j<4; j++)s += hex_chr[(n >> (j * 8 + 4)) & 0x0F]+ hex_chr[(n >> (j * 8)) & 0x0F];return s;}function hex(x) {for (var i=0; i<x.length; i++)x[i] = rhex(x[i]);return x.join('');}function md5(s) {return hex(md51(s));}function add32(a, b) {return (a + b) & 0xFFFFFFFF;}if (md5('hello') != '5d41402abc4b2a76b9719d911017c592') {function add32(x, y) {var lsw = (x & 0xFFFF) + (y & 0xFFFF),msw = (x >> 16) + (y >> 16) + (lsw >> 16);return (msw << 16) | (lsw & 0xFFFF);}}然后只需使用MD5功能，如下所示：
alert(md5("Test string"));另一个正在工作的JS小提琴在这里
