एक स्ट्रिंग को बेस 64 में एन्कोड करें. JavaScript

#base64 #encode #JavaScript #string

btoa () का उपयोग करके एक स्ट्रिंग को बेस 64 में एन्कोड करें

JavaScript

Output result

TGVhcm5pbmcgSmF2YVNjcmlwdA==
Learning JavaScript

बेस 64 ऑब्जेक्ट का उपयोग करके एक स्ट्रिंग को बेस 64 में एन्कोड करें

JavaScript

const Base64 = {

_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",

encode : function (input) {
    let output = "";
    let chr1, chr2, chr3, enc1, enc2, enc3, enc4;
    let 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 +
        Base64._keyStr.charAt(enc1) + Base64._keyStr.charAt(enc2) +
        Base64._keyStr.charAt(enc3) + Base64._keyStr.charAt(enc4);

}

return output;
},

decode : function (input) {
    let output = "";
    let chr1, chr2, chr3;
    let enc1, enc2, enc3, enc4;
    let i = 0;

input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

while (i < input.length) {

enc1 = Base64._keyStr.indexOf(input.charAt(i++));
        enc2 = Base64._keyStr.indexOf(input.charAt(i++));
        enc3 = Base64._keyStr.indexOf(input.charAt(i++));
        enc4 = Base64._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;

_utf8_encode : function (string) {
    string = string.replace(/\r\n/g,"\n");
    let utftext = "";

for (let n = 0; n < string.length; n++) {

let 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;
},

_utf8_decode : function (utftext) {
    let string = "";
    let i = 0;
    let c = c1 = 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);
            c3 = utftext.charCodeAt(i+2);
            string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
            i += 3;
        }

}
    return string;
}
}

const string = 'Learning JavaScript';

const encodedString = Base64.encode(string);
console.log(encodedString);

const decodedString = Base64.decode(encodedString);
console.log(decodedString);

Output result

TGVhcm5pbmcgSmF2YVNjcmlwdA==
Learning JavaScript.

JavaScript

जावास्क्रिप्ट प्रोग्रामिंग luaguage में कोड उदाहरण और प्रश्नों के उत्तर

एक स्ट्रिंग को बेस 64 में एन्कोड करें. JavaScript

JavaScript

Hot Network Questions

BeeCoder.ORG

open source code and examples