我要评论1.匀速移动代码
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>title</title>
<style>
* {
margin: 0;
padding: 0;
}
div {
margin-top: 20px;
width: 200px;
height: 100px;
background-color: green;
position: absolute;
left: 0;
top: 0;
}
</style>
</head>
<body>
<input type="button" value="移动到400px" id="btn1"/>
<input type="button" value="移动到800px" id="btn2"/>
<div id="dv">
<script src="common.js"></script>
<script>
//点击按钮移动div
my$("btn1").onclick = function () {
animate(my$("dv"), 400);
};
my$("btn2").onclick = function () {
animate(my$("dv"), 800);
};
//匀速动画
function animate(element, target) {
//清理定时器
clearinterval(element.timeid);
element.timeid = setinterval(function () {
//获取元素的当前位置
var current = element.offsetleft;
//移动的步数
var step = 10;
step = target > current ? step : -step;
current += step;
if (math.abs(current - target) > math.abs(step)) {
element.style.left = current + "px";
} else {
clearinterval(element.timeid);
element.style.left = target + "px";
}
}, 20);
}
</script>
</div>
</body>
</html>
2.变速移动代码
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>title</title>
<style>
* {
margin: 0;
padding: 0;
}
div {
margin-top: 20px;
width: 200px;
height: 100px;
background-color: green;
position: absolute;
left: 0;
top: 0;
}
</style>
</head>
<body>
<input type="button" value="移动到400px" id="btn1"/>
<input type="button" value="移动到800px" id="btn2"/>
<div id="dv">
<script src="common.js"></script>
<script>
//点击按钮移动div
my$("btn1").onclick = function () {
animate(my$("dv"), 400);
};
my$("btn2").onclick = function () {
animate(my$("dv"), 800);
};
//变速动画
function animate(element, target) {
//清理定时器
clearinterval(element.timeid);
element.timeid = setinterval(function () {
//获取元素的当前位置
var current = element.offsetleft;
//移动的步数
var step = (target-current)/10;
step = step>0?math.ceil(step):math.floor(step);
current += step;
element.style.left = current + "px";
if(current==target) {
//清理定时器
clearinterval(element.timeid);
}
}, 20);
}
</script>
</div>
</body>
</html>
common.js
/**
* 获取指定标签对象
* @param id 标签的id属性值
* @returns {element}根据id属性值返回指定标签对象
*/
function my$(id) {
return document.getelementbyid(id);
}
以上所述是小编给大家介绍的js div匀速移动动画与变速移动动画详解整合，希望对大家有所帮助
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