Number of Segments in a String

LeetCode題目: 434. Number of Segments in a String

My solution:

/**
 * @param {string} s
 * @return {number}
 */
let countSegments = s => {
    s = s.replace(/\s+/g, ' ').trim();
    if(s.length === 0) return 0;
    return s.split(" ").length;
};