Nodejs Number to Hex Convert toHex(len)

Method Source Code

"use strict";/*from  www. j a  va  2 s.co m*/

/*jshint freeze:false */

/** @file Contains all extension methods used in the product.
 */

/** Converts the number to an upper=case hexidecimal string of the given length,
 * possibly truncating significant digits. No leading markers are given.
 * 
 * @param {Number} len The length of the output string
 * @return {String} An upper-case hexidecimal string representation of the
 *                  number, truncated or zero-padded to the given length.
 */
Number.prototype.toHex = function(len) {
    var str = this.toString(16);
    str = str.toUpperCase();
    str = str.substr(0, len);
    while(str.length < len) {
        str = "0" + str;
    }
    return str;
};

/*jshint freeze:true */

Related

1. toHex()

   Number.prototype.toHex = function() {
     var hex = this.toString(16);
     if (hex.length == 1) {
       hex = "0" + hex;
     return hex;
   

2. toHex()

   Number.prototype.toHex = function () {
     var upper = (this.valueOf() >> 4) & 0x0F,
       lower = this.valueOf() & 0x0F;
     return upper.toString(16) + lower.toString(16);
   };
   

3. toHex()

   Number.prototype.toHex = function() 
     try
       var val = this.valueOf();
       val = parseInt(val);
       val = Math.max(0,val);
       val = Math.min(val,255);
       val = Math.round(val);
   ...
   

4. toHex()

   Number.prototype.toHex = function() {
     if (this < 16) {
       return '0' + this.toString(16); 
     return this.toString(16);
   

5. toHex(length)

   Number.prototype.toHex = function(length) {
     var str = this.toString(16);
     while (str.length < length)
       str = '0' + str;
     str = str.toUpperCase();
     return str;
   };
   Number.prototype.toChar = function() {
     return String.fromCharCode(this);
   ...
   

6. toHex(offset)

   Number.prototype.toHex = function (offset) {
     return this.toString(16).toUpperCase()
   };
   

7. toHexByte()

   Number.prototype.toHexByte = function() {
       var s = this.toString(16).toUpperCase();
       if (s.length == 1) {
           s = "0" + s;
       return ">" + s;
   };
   

8. toHexByteShort()

   Number.prototype.toHexByteShort = function() {
       var s = this.toString(16).toUpperCase();
       if (s.length == 1) {
           s = "0" + s;
       return s;
   };