猫史档案馆

我试过，代码如下，

var player_list = []
for(const p of world.querySelectorAll('player')){
     player_list.push(p.name)
}

但是会报错：cannot read property 'length' of undefined...................................................................

player=new Array()
        world.querySelectorAll('player').forEach((a)=>{
        player.push(a.player.name)
        })