How to use JS to make the ball follow the movement of the mouse
This article mainly introduces the animation effect of multiple colored balls following the mouse movement implemented by native JS, involving javascript event response, dynamic modification of page element attributes and random number application and other related operation skills. Friends in need can refer to it
The example in this article describes the animation effect of multiple colored balls that follow the mouse movement implemented in native JS. Share it with everyone for your reference, the details are as follows:
Implementation method:
Each small ball moves has its own coordinates. While moving, coordinates need to be transferred, and the first coordinate is transferred to the last coordinate in order to achieve the effect of the ball moving with it
Implementation code:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>小球运动</title>
<style type="text/css">
p {
border-radius: 50%;
width: 30px;
height: 30px;
position: absolute;
text-align: center;
line-height: 30px;
color: white;
}
</style>
</head>
<body>
</body>
<script type="text/javascript">
//创建数组存储所有的小球
var balls = [];
//创建小球函数
function createballs(){
for (var i = 0;i < 60;i++) {
var ball = document.createElement("p");
ball.innerHTML = i + 1;
ball.style.backgroundColor = randomColor();
//将创建的小球存储到数组中
document.body.appendChild( ball);
//将所有的小球存在数组中
balls.push( ball);
}
}
createballs();
//随机函数
function randomNum(m, n) {
return Math.floor(Math.random() * (n - m + 1) + m);
}
//随机颜色
function randomColor() {
return "rgb(" + randomNum(0, 255) + "," + randomNum(0, 255) + "," + randomNum(0, 255) + ")";
}
document.onmousemove = function(e){
var eventObj = e || event;
for(var i = balls.length - 1;i > 0;i--){
//将小球的下标通过for循环进行传递
balls[i].style.left = balls[i - 1].style.left;
balls[i].style.top= balls[i - 1].style.top;
}
//将第一个小球赋值为最新的事件对象中的坐标
balls[0].style.left = eventObj.clientX + "px";
balls[0].style.top= eventObj.clientY + "px";
}
</script>
</html>Operation effect:
The above is what I compiled for everyone, I hope it will be helpful to everyone in the future helpful.
Related articles:
Use native JavaScript to achieve the magnifying glass effect
Detailed analysis of Vue Socket.io source code
Vue component communication (detailed tutorial)
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