2020-02-16 标签:javascript,动画,圆形,运动,环绕,鼠标,小球,代码,如下,实现,script,type,text,var,ball,mousex,100,mousey,angle

代码如下： 实现代码如下： var ball; var mouseX = 100; var mouseY = 100; var angle = 0; var radius = 50; function run(){ if(ball === undefined){ ball = document.c