// most libs will include a similar utility

if(!Object.values) Object.values = function(ob){

    var arr = [];

    for(var k in ob) 

        if(ob.hasOwnProperty(k))

            arr.push(ob[k]);

    return arr;

};

​

function multiMode(arr){

    var map = arr.reduce(function(map, item){

        if(!(item in map)) map[item] = 0;

        return map[item]++, map;

    }, {});

    var max = Math.max.apply(null, Object.values(map)),

        arr2 = [];

    Object.keys(map).forEach(function(k){

        if(map[k] === max) arr2.push(k);  

    });

    return arr2;

}

​

console.log(multiMode(['pear', 'apple', 'orange', 'apple', 'pear', 'pear', 'apple']));