[].slice.call(document.getElementById('test-list').children).filter(function (x) {
    if (x.innerText === 'JavaScript'
        || x.innerText === 'HTML'
        || x.innerText === 'CSS') {
            return false;
        } else {
            return true;
        }
}).forEach(function (x) {
    var parent = x.parentElement;
    parent.removeChild(x);
});