js類數組轉數組

• let list = Array.from(elems );
• Array.prototype.slice.call（elems）
• let list = […hdList];//用[ …elems ]方法轉化爲數組並用list接收
• Array.prototype.forEach.apply(elem,[callback])
• Array.prototype.forEach.bind(elems )((current,index) => {
  current.addEventListener(‘click’,() => {
  animationFn(index);
  },false);
  });
• Array.prototype.forEach.call(elem,callback)