Random color, JS generated html

by lasha

HTML

<div class="container" data-col-count="50">
  
</div>

SCSS

@import url(https://fonts.googleapis.com/css?family=Roboto+Condensed:400,700);
body {
  margin: 0;
  background-color: #6d695c;
  background-image:
  repeating-linear-gradient(120deg, rgba(255,255,255,.1), rgba(255,255,255,.1) 1px, transparent 1px, transparent 60px),
  repeating-linear-gradient(60deg, rgba(255,255,255,.1), rgba(255,255,255,.1) 1px, transparent 1px, transparent 60px),
  linear-gradient(60deg, rgba(0,0,0,.1) 25%, transparent 25%, transparent 75%, rgba(0,0,0,.1) 75%, rgba(0,0,0,.1)),
  linear-gradient(120deg, rgba(0,0,0,.1) 25%, transparent 25%, transparent 75%, rgba(0,0,0,.1) 75%, rgba(0,0,0,.1));
  background-size: 70px 120px;
  font-family: 'Roboto Condensed', sans-serif;
}

.container {
  background-color: rgba(255,255,255,0.3);
  height: 300px;
  position: relative;
  
  div.col {
    position: absolute;
    height: 100%;
  }
}

JavaScript

var $container = $('.container');
var containerWidth = $container.width();
var containerCols = $container.data('col-count');
//var containerColWidth = containerWidth / containerCols;
var containerColWidth = 100 / containerCols;
var widthUnit = "%";
console.log(typeof containerColWidth);
var colTmpl;
var htmlString = "";

for(var i = 0; i < containerCols; i++){
	htmlString += '<div class="col" style="background-color:'+ '#'+'0123456789abcdef'.split('').map(function(v,i,a){
  return i>5 ? null : a[Math.floor(Math.random()*16)] }).join('') +';width:'+containerColWidth + widthUnit + ';left:'+ (containerColWidth * i) + widthUnit+';"></div>';
}
$container.html(htmlString);