Nodejs Number to Hex Convert hex(len)

Method Source Code

Number.prototype.hex = function(len) {
   var str = this.toString(16).toUpperCase();
   /* ww  w .j a v  a2s  .co  m*/
   if(len != null)
      str = (Array(len).join('0') + str).slice(-len);
   
   return '0x' + str;
}

var utils = {
   toHex: function(str) {
      return '0x' + Number(str.charCodeAt(0)).toString(16).toUpperCase();
   }
}

Related

1. toHexByte()

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

2. toHexByteShort()

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

3. toHexWord()

   Number.prototype.toHexWord = function() {
       var s = this.toString(16).toUpperCase();
       while (s.length < 4) {
           s = "0" + s;
       return ">" + s;
   };
   

4. to_hex()

   Number.prototype.to_hex = function() {
     if (this === 0) {
       return "00";
     var chars = "0123456789ABCDEF";
     var n = Math.max(0, this);
     n = Math.min(n, 255);
     n = Math.round(n);
     return chars.charAt((n - n % 16)/16) + chars.charAt(n % 16);
   ...
   

5. hex()

   Number.prototype.hex = function () {
     return "0x" + this.toString(16);
   };
   

6. printHex(bits)

   Number.prototype.printHex = function(bits)
     var zeros = '';
     var len = bits/4;
     for(var i=0;i<len;i++)
       zeros+='0';  
     return (""+zeros + this.toString(16)).substr(-1*len).toUpperCase();