var reader = new FileReader()
reader.onload = function(callback) {
var md5 = rstr2hex(binl2rstr(binl_md5(reader.result, reader.result.length)))
}
document.getElementById("xxx").value=md5
第二步：获取生成的md5值
var md5value = document.getElementById('xxx').value
一，有关于JS md5加密：
下载包：
1：md5.js ；
2： md4.js ；
3： sha1.js。
二，使用MD5加密的方法：
下载md5.js文件，在网页中引用该文件:
<script type="text/javascript" src="md5.js"></script>
三，在你需要使用MD5加密的地方如此调用:
<script type="text/javascript" >
hash = hex_md5("input string")
</script>
其他两个算法类似。
用javascript加密的好处是可以在客户端完成加密之后传送到服务端，
即可以减轻服务端负担，也可以保证传输的安全。
可以使用crypto-js插件来进行加密的。
我就说一下在node环境中使用吧（直接引入其实也差不多）
1，首先安装crypto-js包：
一般加密的地方都是需要发送ajax，所以最好把ajax再封装一下（这样只要在这里加密就可以了），将封装的ajax文件挂到VUE全局方法（就是在在入口的地方使用Vue.prototype）
2，在ajax文件处引入下面两个文件：
var CryptoJS = require("crypto-js/core")var MD5 = require("crypto-js/md5") //或者使用ES6 importimport CryptoJS from 'crypto-js/core'import MD5 from 'crypto-js/md5'3，最后在需要使用的地方用这“CryptoJS.MD5（需要加密的值）”。
使用下面的函数，例如varpwd=hex_md5("hello world")对"hello world"进行md5加密。var hexcase = 0function hex_md5(a) {
if (a == "") return a
return rstr2hex(rstr_md5(str2rstr_utf8(a)))
}
function hex_hmac_md5(a, b) {
return rstr2hex(rstr_hmac_md5(str2rstr_utf8(a), str2rstr_utf8(b)))
}
function md5_vm_test() {
return hex_md5("abc").toLowerCase() == "900150983cd24fb0d6963f7d28e17f72"
}
function rstr_md5(a) {
return binl2rstr(binl_md5(rstr2binl(a), a.length * 8))
}
function rstr_hmac_md5(c, f) {
var e = rstr2binl(c)
if (e.length >16) {
e = binl_md5(e, c.length * 8)
}
var a = Array(16),
d = Array(16)
for (var b = 0b <16b++) {
a[b] = e[b] ^ 909522486
d[b] = e[b] ^ 1549556828
}
var g = binl_md5(a.concat(rstr2binl(f)), 512 + f.length * 8)
return binl2rstr(binl_md5(d.concat(g), 512 + 128))
}
function rstr2hex(c) {
try {
hexcase
} catch(g) {
hexcase = 0
}
var f = hexcase ? "0123456789ABCDEF": "0123456789abcdef"
var b = ""
var a
for (var d = 0d <c.lengthd++) {
a = c.charCodeAt(d)
b += f.charAt((a >>>4) &15) + f.charAt(a &15)
}
return b
}
function str2rstr_utf8(c) {
var b = ""
var d = -1
var a, e
while (++d <c.length) {
a = c.charCodeAt(d)
e = d + 1 <c.length ? c.charCodeAt(d + 1) : 0
if (55296 <= a &&a <= 56319 &&56320 <= e &&e <= 57343) {
a = 65536 + ((a &1023) <<10) + (e &1023)
d++
}
if (a <= 127) {
b += String.fromCharCode(a)
} else {
if (a <= 2047) {
b += String.fromCharCode(192 | ((a >>>6) &31), 128 | (a &63))
} else {
if (a <= 65535) {
b += String.fromCharCode(224 | ((a >>>12) &15), 128 | ((a >>>6) &63), 128 | (a &63))
} else {
if (a <= 2097151) {
b += String.fromCharCode(240 | ((a >>>18) &7), 128 | ((a >>>12) &63), 128 | ((a >>>6) &63), 128 | (a &63))
}
}
}
}
}
return b
}
function rstr2binl(b) {
var a = Array(b.length >>2)
for (var c = 0c <a.lengthc++) {
a[c] = 0
}
for (var c = 0c <b.length * 8c += 8) {
a[c >>5] |= (b.charCodeAt(c / 8) &255) <<(c % 32)
}
return a
}
function binl2rstr(b) {
var a = ""
for (var c = 0c <b.length * 32c += 8) {
a += String.fromCharCode((b[c >>5] >>>(c % 32)) &255)
}
return a
}
function binl_md5(p, k) {
p[k >>5] |= 128 <<((k) % 32)
p[(((k + 64) >>>9) <<4) + 14] = k
var o = 1732584193
var n = -271733879
var m = -1732584194
var l = 271733878
for (var g = 0g <p.lengthg += 16) {
var j = o
var h = n
var f = m
var e = l
o = md5_ff(o, n, m, l, p[g + 0], 7, -680876936)
l = md5_ff(l, o, n, m, p[g + 1], 12, -389564586)
m = md5_ff(m, l, o, n, p[g + 2], 17, 606105819)
n = md5_ff(n, m, l, o, p[g + 3], 22, -1044525330)
o = md5_ff(o, n, m, l, p[g + 4], 7, -176418897)
l = md5_ff(l, o, n, m, p[g + 5], 12, 1200080426)
m = md5_ff(m, l, o, n, p[g + 6], 17, -1473231341)
n = md5_ff(n, m, l, o, p[g + 7], 22, -45705983)
o = md5_ff(o, n, m, l, p[g + 8], 7, 1770035416)
l = md5_ff(l, o, n, m, p[g + 9], 12, -1958414417)
m = md5_ff(m, l, o, n, p[g + 10], 17, -42063)
n = md5_ff(n, m, l, o, p[g + 11], 22, -1990404162)
o = md5_ff(o, n, m, l, p[g + 12], 7, 1804603682)
l = md5_ff(l, o, n, m, p[g + 13], 12, -40341101)
m = md5_ff(m, l, o, n, p[g + 14], 17, -1502002290)
n = md5_ff(n, m, l, o, p[g + 15], 22, 1236535329)
o = md5_gg(o, n, m, l, p[g + 1], 5, -165796510)
l = md5_gg(l, o, n, m, p[g + 6], 9, -1069501632)
m = md5_gg(m, l, o, n, p[g + 11], 14, 643717713)
n = md5_gg(n, m, l, o, p[g + 0], 20, -373897302)
o = md5_gg(o, n, m, l, p[g + 5], 5, -701558691)
l = md5_gg(l, o, n, m, p[g + 10], 9, 38016083)
m = md5_gg(m, l, o, n, p[g + 15], 14, -660478335)
n = md5_gg(n, m, l, o, p[g + 4], 20, -405537848)
o = md5_gg(o, n, m, l, p[g + 9], 5, 568446438)
l = md5_gg(l, o, n, m, p[g + 14], 9, -1019803690)
m = md5_gg(m, l, o, n, p[g + 3], 14, -187363961)
n = md5_gg(n, m, l, o, p[g + 8], 20, 1163531501)
o = md5_gg(o, n, m, l, p[g + 13], 5, -1444681467)
l = md5_gg(l, o, n, m, p[g + 2], 9, -51403784)
m = md5_gg(m, l, o, n, p[g + 7], 14, 1735328473)
n = md5_gg(n, m, l, o, p[g + 12], 20, -1926607734)
o = md5_hh(o, n, m, l, p[g + 5], 4, -378558)
l = md5_hh(l, o, n, m, p[g + 8], 11, -2022574463)
m = md5_hh(m, l, o, n, p[g + 11], 16, 1839030562)
n = md5_hh(n, m, l, o, p[g + 14], 23, -35309556)
o = md5_hh(o, n, m, l, p[g + 1], 4, -1530992060)
l = md5_hh(l, o, n, m, p[g + 4], 11, 1272893353)
m = md5_hh(m, l, o, n, p[g + 7], 16, -155497632)
n = md5_hh(n, m, l, o, p[g + 10], 23, -1094730640)
o = md5_hh(o, n, m, l, p[g + 13], 4, 681279174)
l = md5_hh(l, o, n, m, p[g + 0], 11, -358537222)
m = md5_hh(m, l, o, n, p[g + 3], 16, -722521979)
n = md5_hh(n, m, l, o, p[g + 6], 23, 76029189)
o = md5_hh(o, n, m, l, p[g + 9], 4, -640364487)
l = md5_hh(l, o, n, m, p[g + 12], 11, -421815835)
m = md5_hh(m, l, o, n, p[g + 15], 16, 530742520)
n = md5_hh(n, m, l, o, p[g + 2], 23, -995338651)
o = md5_ii(o, n, m, l, p[g + 0], 6, -198630844)
l = md5_ii(l, o, n, m, p[g + 7], 10, 1126891415)
m = md5_ii(m, l, o, n, p[g + 14], 15, -1416354905)
n = md5_ii(n, m, l, o, p[g + 5], 21, -57434055)
o = md5_ii(o, n, m, l, p[g + 12], 6, 1700485571)
l = md5_ii(l, o, n, m, p[g + 3], 10, -1894986606)
m = md5_ii(m, l, o, n, p[g + 10], 15, -1051523)
n = md5_ii(n, m, l, o, p[g + 1], 21, -2054922799)
o = md5_ii(o, n, m, l, p[g + 8], 6, 1873313359)
l = md5_ii(l, o, n, m, p[g + 15], 10, -30611744)
m = md5_ii(m, l, o, n, p[g + 6], 15, -1560198380)
n = md5_ii(n, m, l, o, p[g + 13], 21, 1309151649)
o = md5_ii(o, n, m, l, p[g + 4], 6, -145523070)
l = md5_ii(l, o, n, m, p[g + 11], 10, -1120210379)
m = md5_ii(m, l, o, n, p[g + 2], 15, 718787259)
n = md5_ii(n, m, l, o, p[g + 9], 21, -343485551)
o = safe_add(o, j)
n = safe_add(n, h)
m = safe_add(m, f)
l = safe_add(l, e)
}
return Array(o, n, m, l)
}
function md5_cmn(h, e, d, c, g, f) {
return safe_add(bit_rol(safe_add(safe_add(e, h), safe_add(c, f)), g), d)
}
function md5_ff(g, f, k, j, e, i, h) {
return md5_cmn((f &k) | ((~f) &j), g, f, e, i, h)
}
function md5_gg(g, f, k, j, e, i, h) {
return md5_cmn((f &j) | (k &(~j)), g, f, e, i, h)
}
function md5_hh(g, f, k, j, e, i, h) {
return md5_cmn(f ^ k ^ j, g, f, e, i, h)
}
function md5_ii(g, f, k, j, e, i, h) {
return md5_cmn(k ^ (f | (~j)), g, f, e, i, h)
}
function safe_add(a, d) {
var c = (a &65535) + (d &65535)
var b = (a >>16) + (d >>16) + (c >>16)
return (b <<16) | (c &65535)
}
function bit_rol(a, b) {
return (a <<b) | (a >>>(32 - b))
}
