第一种方式，直接使用插件 js-base64

1、安装插件

npm install --save js-base64

2、插件引用

import { Base64 } from 'js-base64'

3、加密、解密

const encodePwd = Base64.encode(password);//加密
const decodePwd = Base64.decode(encodePwd);//解密

第二种，封装引入

1、utils 中创建文件 base64.js，base64.js中代码如下

//加密、解密算法封装：
function Base64(this: any) {// private propertyvar _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";// public method for encodingthis.encode = function (input: string) {if (!input) { console.log('请传入要加密的值'); return }var output = "";var chr1: number, chr2: number, chr3: number, enc1: number, enc2: number, enc3: number, enc4: number;var i = 0;input = _utf8_encode(input);while (i < input.length) {chr1 = input.charCodeAt(i++);chr2 = input.charCodeAt(i++);chr3 = input.charCodeAt(i++);enc1 = chr1 >> 2;enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);enc4 = chr3 & 63;if (isNaN(chr2)) {enc3 = enc4 = 64;} else if (isNaN(chr3)) {enc4 = 64;}output = output +_keyStr.charAt(enc1) + _keyStr.charAt(enc2) +_keyStr.charAt(enc3) + _keyStr.charAt(enc4);}return output;}// public method for decodingthis.decode = function (input: string) {if (!input) { console.log('请传入要解密的值'); return }var output = "";var chr1: number, chr2: number, chr3: number;var enc1: number, enc2: number, enc3: number, enc4: number;var i = 0;input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");while (i < input.length) {enc1 = _keyStr.indexOf(input.charAt(i++));enc2 = _keyStr.indexOf(input.charAt(i++));enc3 = _keyStr.indexOf(input.charAt(i++));enc4 = _keyStr.indexOf(input.charAt(i++));chr1 = (enc1 << 2) | (enc2 >> 4);chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);chr3 = ((enc3 & 3) << 6) | enc4;output = output + String.fromCharCode(chr1);if (enc3 != 64) {output = output + String.fromCharCode(chr2);}if (enc4 != 64) {output = output + String.fromCharCode(chr3);}}output = _utf8_decode(output);return output;}// private method for UTF-8 encodingvar _utf8_encode = function (string: string) {string = string.replace(/\r\n/g, "\n");var utftext = "";for (var n = 0; n < string.length; n++) {var c = string.charCodeAt(n);if (c < 128) {utftext += String.fromCharCode(c);} else if ((c > 127) && (c < 2048)) {utftext += String.fromCharCode((c >> 6) | 192);utftext += String.fromCharCode((c & 63) | 128);} else {utftext += String.fromCharCode((c >> 12) | 224);utftext += String.fromCharCode(((c >> 6) & 63) | 128);utftext += String.fromCharCode((c & 63) | 128);}}return utftext;}// private method for UTF-8 decodingvar _utf8_decode = function (utftext: string) {var string = "";var i = 0;let c = 0, c1 = 0, c2 = 0;while (i < utftext.length) {c = utftext.charCodeAt(i);if (c < 128) {string += String.fromCharCode(c);i++;} else if ((c > 191) && (c < 224)) {c2 = utftext.charCodeAt(i + 1);string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));i += 2;} else {c2 = utftext.charCodeAt(i + 1);c1 = utftext.charCodeAt(i + 2);string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c1 & 63));i += 3;}}return string;}
}
export default Base64

2、引用封装的 js

import { Base64 } from '@/utils/base64'

3、加密、解密

const encodePwd = Base64.encode(password);//加密
const decodePwd = Base64.decode(encodePwd);//解密