匆忙的一周 ARTS 第二周

/**
 * @param {string} moves
 * @return {boolean}
 */
const judgeCircle = function(moves) {
    let x = 0;
    let y = 0;
    for(let i = 0; i < moves.length; i++) {
        if (moves[i] === "R") {
            x++;
        }else if(moves[i] === "L") {
            x--;
        }else if(moves[i] === "U") {
            y++;
        }else if(moves[i] === "D") {
            y--;
        }
    }
    return !x && !y
};

Vue.component('welcome-button', {
  template: `
    <button v-on:click="$emit('welcome')">
      Click me to be welcomed
    </button>
  `
})