1.在utils中封装js方法，代码如下：
var Base64 = {// private property_keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=", //密钥（不能修改）// public method for encodingencode: function(input) {var output = "";var chr1, chr2, chr3, enc1, enc2, enc3, enc4;var i = 0;input = Base64._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 + this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) + this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);}return output;},// public method for decodingdecode: function(input) {var output = "";var chr1, chr2, chr3;var enc1, enc2, enc3, enc4;var i = 0;input = input.replace(/[^A-Za-z0-9+/=]/g, "");while (i < input.length) {enc1 = this._keyStr.indexOf(input.charAt(i++));enc2 = this._keyStr.indexOf(input.charAt(i++));enc3 = this._keyStr.indexOf(input.charAt(i++));enc4 = this._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 = Base64._utf8_decode(output);return output;},// private method for UTF-8 encoding_utf8_encode: function(string) {string = string.replace(/ /g, " ");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 decoding_utf8_decode: function(utftext) {var string = "";var i = 0;var c,c1,c2,c3 = 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);c3 = utftext.charCodeAt(i + 2);string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));i += 3;}}return string;}}export default Base64
2.在main.js中引入并挂载到vue原型对象上
//Base64加密import Base64 from '@/utils/base64.js'Vue.prototype.$Base64 = Base64
3.在vue文件中使用
this.$Base64.encode(str) //加密this.$Base64.decode(str) //解密
拓展：编码解码的其他方式
1.md5
常用于加密，可以暴力反向破解但是难度很大，一般来说，对md5加密的要求是现代算力最高的计算机需要花百年才能进行解密
2.window对象自带的编码解码
window.btoa(str) //对str进行编码
binary to ascii，用于将ascii字符串或二进制数据转换成一个base64编码过的字符串表示，即Base64的编码过程，常用于编码字符串。btoa不能编辑Unicode字符
window.atob(str) //对str进行解码
ascii to binary，用于解码一个已经被base-64编码过的数据，即解码Base64编码的字符串。
3.Unicode字符编码
encodeURI(str) //将URL地址编码转变成ASCII字符序列decodeURI(str) //将ASCII字符序列解码转变成UTL地址encodeURIComponent(str) //将中文字符编码转变成ASCII字符序列decodeURIComponent(str) //将ASCII字符序列解码转变成中文字符
4.使用JS函数的escape()和unescape()
var escape1 =escape("我的名字是：");//编码console.log(escape1);var unescape1 = unescape(escape1); //解码console.log(unescape1);
