Edit in JSFiddle

var array1 = [1, 2, 3, 4];
var array2 = [1, 2, 4, 6];
var array3 = [1, 2, 4, 8];

// the lodash way 
var cool = _.intersection(array1, array2, array3);

// Pure JS, implementation of Underscore lib, slightly modified:
intersection = function(array) {
    var result = [];
    var argsLength = arguments.length;
    for (var i = 0; i < array.length; i++) {
      var item = array[i];
      if (result.indexOf(item) > -1) continue;
      for (var j = 1; j < argsLength; j++) {
        if (!(arguments[j].indexOf(item) > -1)) break;
      }
      if (j === argsLength) result.push(item);
    }
    return result;
  };

notCool = intersection(array1, array2, array3);
                      
//display it on page
document.getElementById("cool").innerHTML = cool;
document.getElementById("not-cool").innerHTML = notCool;

Lodash result:
<p id="cool"></p>
Pure JS result:
<p id="not-cool"></p>