//base64加密 解密/* //1.加密 var result = Base.encode('125中文'); //--> "MTI15Lit5paH"//2.解密 var result2 = Base.decode(result); //--> '125中文' */~(function(root, factory) {if (ttypeof define === "function" && define.amd) {define([], factory);} else if (typeof module === "object" && module.exports) {module.exports = factory();} else {root.Base = factory();} } (this, function() {'use strict';function Base64() {// private propertythis._keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";}//public method for encodingBase64.prototype.encode = function (input) {var output = "", chr1, chr2, chr3, enc1, enc2, enc3, enc4, i = 0;input = this._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 decodingBase64.prototype.decode = function (input) {var output = "", chr1, chr2, chr3, enc1, enc2, enc3, enc4, 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 = this._utf8_decode(output);return output;}//private method for UTF-8 encodingBase64.prototype._utf8_encode = function (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 decodingBase64.prototype._utf8_decode = function (utftext) {var string = "", i = 0, c = 0, c1 = 0, c2 = 0, 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;}var Base = new Base64();return Base; }));

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