Get most repeated item in a array using pure js

get-most-repeated.js

/**
 * get most repeated item in an array with help of this article
 * https://stackoverflow.com/questions/1053843/
 * 
 * @param {Array} array
 * @returns {*}
 */
var getMostRepeatedItem: function (array) {
    if(array.length === 0)
        return null;

    var modeMap = {};
    var maxEl = array[0], maxCount = 1;
    for(var i = 0; i < array.length; i++)
    {
        var el = array[i];
        if(modeMap[el] == null)
            modeMap[el] = 1;
        else
            modeMap[el]++;
        if(modeMap[el] > maxCount)
        {
            maxEl = el;
            maxCount = modeMap[el];
        }
    }

    return maxEl;
},