Rotate String

LeetCode題目: 796. Rotate String

My solution:

/**
 * @param {string} s
 * @param {string} goal
 * @return {boolean}
 */
let rotateString = (s, goal) => {
    for(let i=0; i<s.length; i++) {
       if(s.slice(i) + s.slice(0, i) === goal) return true;
    }
    return false;
};