Nodejs Hex Encode hexEncode()

Method Source Code

var string = "hello world"
var apple = "\uF8FF"

string.charCodeAt(0).toString(16);

String.prototype.hexEncode = function(){
    var hex, i;/*from   w ww .j a  va 2 s .  c om*/

    var result = "";
    for (i=0; i<this.length; i++) {
        hex = this.charCodeAt(i).toString(16);
        result += ("000"+hex).slice(-4);
    }

    return result
}

String.prototype.hexEncode2 = function(){
    var hex, i;

    var result = "";
    for (i=0; i<this.length; i++) {
        hex = this.charCodeAt(i).toString(16);
        result += "\\u" + ("000"+hex).slice(-4);
    }

    return result
}

String.prototype.hexDecode = function(){
    var j;
    var hexes = this.match(/.{1,4}/g) || [];
    var back = "";
    for(j = 0; j<hexes.length; j++) {
        back += String.fromCharCode(parseInt(hexes[j], 16));
    }

    return back;
}

Related

1. hexEncode()

   String.prototype.hexEncode = function() {
     var hex, i;
     var result = "";
     for (i = 0; i < this.length; i++) {
       hex = this.charCodeAt(i).toString(16);
       result += ("000" + hex).slice(-4);
     return result;
   };
   ...
   

2. hexEncode()

   String.prototype.hexEncode = function(){
       let hex, i
       let result = ""
       for (i=0; i<this.length; i++) {
           hex = this.charCodeAt(i).toString(16)
           result += (""+hex).slice(-4)
       return result
   

3. hexEncode()

   String.prototype.hexEncode = function () {
       var result = '';
       var index = 0;
       var hex;
       while (index < this.length) {
           hex = this.charCodeAt(index++).toString(16);
           while (hex.length < 2) { hex = hex; }
           result += hex;
       return result;
   

4. hexEncode8()

   String.prototype.hexEncode8 = function(){
       var hex, i;
       var result = "";
       for (i=0; i<this.length; i++) {
           hex = this.charCodeAt(i).toString(16);
           result += ("0"+hex).slice(-2);
       return result