title: How would one generate a MAC address in Javascript?
body: <p>I need to generate a random MAC address for a project of mine, and I can not get it to work. Below is my current code (that is not working).</p>
  
  <pre><code>function genMAC(){
  // Make a new array with all available HEX options.
  var colours = new Array("0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F");
  // Make variable to hold 6 character HEX array
  partA = new Array(1);
  partB = new Array(1);
  partC = new Array(1);
  partD = new Array(1);
  partE = new Array(1);
  partF = new Array(1);
  mac-address="";
  for (i=0;i&lt;2;i++){
      // Loop for partA
      partA[i]=colours[Math.round(Math.random()*14)];
  }
      for (i=0;i&lt;2;i++){
      // Loop through 6 times, randomising the letter added to the array
      partB[i]=colours[Math.round(Math.random()*14)];
  }
      for (i=0;i&lt;2;i++){
      // Loop through 6 times, randomising the letter added to the array
      partC[i]=colours[Math.round(Math.random()*14)];
  }
      for (i=0;i&lt;2;i++){
      // Loop through 6 times, randomising the letter added to the array
      partD[i]=colours[Math.round(Math.random()*14)];
  }
      for (i=0;i&lt;2;i++){
      // Loop through 6 times, randomising the letter added to the array
      partE[i]=colours[Math.round(Math.random()*14)];
  }
      for (i=0;i&lt;2;i++){
      // Loop through 6 times, randomising the letter added to the array
      partF[i]=colours[Math.round(Math.random()*14)];
  }
  // Returns like "a10bc5". It is likely that you may need to add a "#".
  mac-address = partA + ":" + partB + ":" + partC + ":" + partD + ":" + partE + ":" + partF;
  return mac-address;
  </code></pre>
  
  <p>}</p>
  
  <p>Ugly. I'm fairly new to JS and I am wondering if there is an easier way to do this that would work.</p>