[]监听按键事件怎么写呀，TS的

onkeydown(e: Laya.Event): void{  
        console.log(e.keyCode);     
       if(e.keyCode==37){//左
           this.hero.pos(this.hero.x-100,this.hero.y);           
       }else if(e.keyCode==39){//右
           this.hero.pos(this.hero.x+100,this.hero.y);
       }else if(e.keyCode==38){//上
           this.hero.pos(this.hero.x,this.hero.y-100);
       }else if(e.keyCode==40){//下
           this.hero.pos(this.hero.x,this.hero.y+100);

       }
    }
搞定了

~\(≧▽≦)/~赞