cmchase

Even or Odd
https://www.codewars.com/kata/even-or-odd/train/javascript

Get Middle Character
https://www.codewars.com/kata/get-the-middle-character/train/javascript

Multiples of 3 or 5
https://www.codewars.com/kata/multiples-of-3-or-5/train/javascript

Valid Parentheses

cmchase

var ns = ns || function () {

    var self = {}; // required to access public functions/variables 

    return {

        initNS: function () { self = this; return this; },

        ///////////////////////////////////////////////////////////
        // Page State

cmchase

#gradient {
  .vertical-alpha(@start-color: #555; @start-alpha: 0; @start-percent: 0%; @end-color: #333; @end-alpha: 1; @end-percent: 100%) {
		background-color: transparent !important;
	    @start-alpha-color: hsla(hue(@start-color), saturation(@start-color), lightness(@start-color), 0);
	    @end-alpha-color: hsla(hue(@end-color), saturation(@end-color), lightness(@end-color), @end-alpha);
	    #gradient .vertical(@start-alpha-color; @start-percent; @end-alpha-color; @end-percent);
	}

	.horizontal-three-colors-alpha(@start-color: #00b3ee; @start-alpha: 1; @mid-color: #7a43b6; @mid-alpha: 1; @color-stop: 50%; @end-color: #c3325f; @end-alpha: 1;) {
		background-color: transparent !important;

cmchase

.vertical-alpha(@startColor: #555, @startAlpha: 1, @endColor: #333, @endAlpha: 1) {
    @startAlphaColor: hsla(hue(@startColor), saturation(@startColor), lightness(@startColor), @startAlpha);
    @endAlphaColor: hsla(hue(@endColor), saturation(@endColor), lightness(@endColor), @endAlpha);
    .vertical(@startAlphaColor, @endAlphaColor);
}
.vertical-three-colors-alpha(@startColor: #00b3ee, @startAlpha: 1, @midColor: #7a43b6, @midAlpha: 1, @colorStop: 50%, @endColor: #0026ff, @endAlpha: 1) {
    @startAlphaColor: hsla(hue(@startColor), saturation(@startColor), lightness(@startColor), @startAlpha);
    @midAlphaColor: hsla(hue(@midColor), saturation(@midColor), lightness(@midColor), @midAlpha);
    @endAlphaColor: hsla(hue(@endColor), saturation(@endColor), lightness(@endColor), @endAlpha);
    .vertical-three-colors(@startAlphaColor, @midAlphaColor, @colorStop, @endAlphaColor);