Pure js to achieve mouse trailing effect (fun and simple, once you learn it)

js special effects - trailing effect of mouse sliding

<script>
		//鼠标移动事件（document范围内移动）
			document.onmousemove=function(event){
      
      
			
				//1、创建div
				var _div=document.createElement("div");
				
				//生成随机的宽高
				var random=Math.floor(Math.random()*30)+10;
				
				_div.style.width=random+"px";//节点宽度
				
				_div.style.height=random+"px";//节点高度
				
				_div.style.borderRadius="50%";//圆形
				
				_div.style.backgroundColor=randomColor();//随机背景色
				//2、定位div
				_div.style.position="absolute";
				
				_div.style.left=(event.clientX-random/2)+"px";//左边距
				_div.style.top=(event.clientY-random/2)+"px";//右边距
				//3、追加div
				document.body.appendChild(_div);
				//4、延迟删除div
				setTimeout(function(){
      
      
				
					_div.remove();
					
				},500)
			}
			//生成随机颜色
			function randomColor(){
      
      
			
				var random1=Math.floor(Math.random()*256);
				
				var random2=Math.floor(Math.random()*256);
				
				var random3=Math.floor(Math.random()*256);
				
				return `rgb(${ 
        random1},${ 
        random2},${ 
        random3})`;
			}
		</script>

Renderings: