shchegol

var el = document.getElementById('el');

document.addEventListener('click', outsideEvtListener);

function outsideEvtListener(evt) {
    if (evt.target === el || el.contains(evt.target)) {
        return;
    }
    // code handling outside click
   

shchegol

function declOfNum(number, titles) {  
    cases = [2, 0, 1, 1, 1, 2];  
    return titles[ (number%100>4 && number%100<20)? 2 : cases[(number%10<5)?number%10:5] ];  
}

use:
declOfNum(count, ['найдена', 'найдено', 'найдены']);