説明

1. 用 CSS 刻出游標樣式
2. 抓取滑鼠位置
3. 游標的位置隨著滑鼠移動而改變

範例

#cross

#cross
 position: absolute
 &:before,&:after
 content: ""
 display: block
 width: 60px
 height: 15px
 background-color: #fff
 position: absolute
 left: 50%
 top: 50%
 transform: translate(-50%,-50%) rotate(45deg)
 &:after
 transform: translate(-50%,-50%) rotate(-45deg)

window.addEventListener("mousemove", function(evt){
 
 var x=evt.pageX;
 var y=evt.pageY;
 
 cross.style.left=x+"px";
 cross.style.top=y+"px";
})

Display

CODEPEN