js实现拖动滑块和点击水波纹效果

 本篇文章就给大家介绍js实现拖动滑块效果和点击水波纹效果的方法。有一定的参考价值，有需要的朋友可以参考一下，希望对你们有所帮助。

拖动滑块效果：

先看看效果图：

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            input[type="range"] {
                width: 80%;
                background-color: red;
                border-radius: 15px;
                -webkit-appearance: none;
                height: 1px;
                position: relative;
                -webkit-box-sizing: border-box;
                -moz-box-sizing: border-box;
                box-sizing: border-box;
            }

            input[type="range"]::-webkit-slider-thumb {
                -webkit-appearance: none;
                background-color: green;
                border-radius: 50%;
                height: 30px;
                width: 30px;
                box-shadow: 0 1px 3px rgba(0, 0, 0, .4);
                border: none;
                position: relative;
                z-index: 10;
            }
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            $(function() {
                $(".input_1").change(function() {
                    $("p.p1").text($(this).val());
                })

                setInterval(function() {
                    $("p.p2").text($(".input_2").val());
                }, 0.01)
            })
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        e388a4556c0f65e1904146cc1a846bee添加change事件94b3e26ee717c64999d7867364b1b4a3
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        e388a4556c0f65e1904146cc1a846bee添加定时器94b3e26ee717c64999d7867364b1b4a3
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b2386ffb911b14667cb8f0f91ea547a7鼠标拖动小方块6e916e0f7d1e588d4f442bf645aedb2f
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.lineDiv {
position: relative;
height: 5px;
background: red;
width: 300px;
margin: 50px auto;
}

.lineDiv .minDiv {
position: absolute;
top: -5px;
left: 0;
width: 15px;
height: 15px;
background: green;
cursor: pointer
}

.lineDiv .minDiv .vals {
position: absolute;
font-size: 20px;
top: -45px;
left: -10px;
width: 35px;
height: 35px;
line-height: 35px;
text-align: center;
background: blue;
}

.lineDiv .minDiv .vals:after {
content: "";
width: 0px;
height: 0px;
border-top: 6px solid blue;
border-left: 6px solid transparent;
border-right: 6px solid transparent;
border-bottom: 6px solid transparent;
display: block;
margin-left: 11px;
}
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684271ed9684bde649abda8831d4d355用鼠标拖动小方块ae29c299084ab1e4f6fe3ffee20ef0dd054bdf357c58b8a65c66d7c19c8e4d114%39528cedfa926ea0c01e69ef5b2ea9b0
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window.onload = function() {

var lineDiv = document.getElementById('lineDiv'); //长线条
var minDiv = document.getElementById('minDiv'); //小方块
var msg = document.getElementById("msg");
var vals = document.getElementById("vals");
var ifBool = false; //判断鼠标是否按下

//鼠标按下方块
minDiv.addEventListener("touchstart", function(e) {
e.stopPropagation();
ifBool = true;
console.log("鼠标按下")
});

//拖动
window.addEventListener("touchmove", function(e) {
console.log("鼠标拖动")
if(ifBool) {
var x = e.touches[0].pageX || e.touches[0].clientX; //鼠标横坐标var x
var lineDiv_left = getPosition(lineDiv).left; //长线条的横坐标
var minDiv_left = x - lineDiv_left; //小方块相对于父元素（长线条）的left值 
if(minDiv_left >= lineDiv.offsetWidth - 15) {
minDiv_left = lineDiv.offsetWidth - 15;
}
if(minDiv_left < 0) {
minDiv_left = 0;
}
//设置拖动后小方块的left值
minDiv.style.left = minDiv_left + "px";
msg.innerText = parseInt((minDiv_left / (lineDiv.offsetWidth - 15)) * 100);
vals.innerText = parseInt((minDiv_left / (lineDiv.offsetWidth - 15)) * 100);
}
});
//鼠标松开
window.addEventListener("touchend", function(e) {
console.log("鼠标弹起")
ifBool = false;
});
//获取元素的绝对位置
function getPosition(node) {
var left = node.offsetLeft; //获取元素相对于其父元素的left值var left
var top = node.offsetTop;
current = node.offsetParent; // 取得元素的offsetParent
　 // 一直循环直到根元素
　　
while(current != null) {　　
left += current.offsetLeft;　　
top += current.offsetTop;　　
current = current.offsetParent;　　
}
return {
"left": left,
"top": top
};
}
}
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兼容PC端和移动端

<!DOCTYPE html>
<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<title>鼠标拖动小方块</title>
<style type="text/css">
.lineDiv {
position: relative;
height: 5px;
background: red;
width: 300px;
margin: 50px auto;
}

.lineDiv .minDiv {
position: absolute;
top: -5px;
left: 0;
width: 15px;
height: 15px;
background: green;
cursor: pointer
}

.lineDiv .minDiv .vals {
position: absolute;
font-size: 20px;
top: -45px;
left: -10px;
width: 35px;
height: 35px;
line-height: 35px;
text-align: center;
background: blue;
}

.lineDiv .minDiv .vals:after {
content: "";
width: 0px;
height: 0px;
border-top: 6px solid blue;
border-left: 6px solid transparent;
border-right: 6px solid transparent;
border-bottom: 6px solid transparent;
display: block;
margin-left: 11px;
}
</style>
</head>

<body>
<center>
<h3>用鼠标拖动小方块<span id="msg">0</span>%</h3>
</center>
<div id="lineDiv">
<div id="minDiv">
<div id="vals">0</div>
</div>
</div>
<script>
window.onload = function() {

var lineDiv = document.getElementById(&#39;lineDiv&#39;); //长线条
var minDiv = document.getElementById(&#39;minDiv&#39;); //小方块
var msg = document.getElementById("msg");
var vals = document.getElementById("vals");
var ifBool = false; //判断鼠标是否按下
//事件
var start = function(e) {
e.stopPropagation();
ifBool = true;
console.log("鼠标按下")
}
var move = function(e) {
console.log("鼠标拖动")
if(ifBool) {
if(!e.touches) {    //兼容移动端
var x = e.clientX;
} else {     //兼容PC端
var x = e.touches[0].pageX;
}
//var x = e.touches[0].pageX || e.clientX; //鼠标横坐标var x
var lineDiv_left = getPosition(lineDiv).left; //长线条的横坐标
var minDiv_left = x - lineDiv_left; //小方块相对于父元素（长线条）的left值 
if(minDiv_left >= lineDiv.offsetWidth - 15) {
minDiv_left = lineDiv.offsetWidth - 15;
}
if(minDiv_left < 0) {
minDiv_left = 0;
}
//设置拖动后小方块的left值
minDiv.style.left = minDiv_left + "px";
msg.innerText = parseInt((minDiv_left / (lineDiv.offsetWidth - 15)) * 100);
vals.innerText = parseInt((minDiv_left / (lineDiv.offsetWidth - 15)) * 100);
}
}
var end = function(e) {
console.log("鼠标弹起")
ifBool = false;
}
//鼠标按下方块
minDiv.addEventListener("touchstart", start);
minDiv.addEventListener("mousedown", start);
//拖动
window.addEventListener("touchmove", move);
window.addEventListener("mousemove", move);
//鼠标松开
window.addEventListener("touchend", end);
window.addEventListener("mouseup", end);
//获取元素的绝对位置
function getPosition(node) {
var left = node.offsetLeft; //获取元素相对于其父元素的left值var left
var top = node.offsetTop;
current = node.offsetParent; // 取得元素的offsetParent
　 // 一直循环直到根元素
　　
while(current != null) {　　
left += current.offsetLeft;　　
top += current.offsetTop;　　
current = current.offsetParent;　　
}
return {
"left": left,
"top": top
};
}
}
</script>
</body>

</html>

设置滑块的滑动范围

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.lineDiv {
position: relative;
height: 5px;
background: red;
width: 95%;
margin: 50px auto;
}

.lineDiv .minDiv {
position: absolute;
top: -15px;
left: 0;
width: 35px;
height: 35px;
background: green;
cursor: pointer;
transition: all 0s;
}

.lineDiv .vals {
z-index: 100;
position: absolute;
top: 0px;
left: 0px;
width: 0px;
height: 5px;
background: blue;
}
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684271ed9684bde649abda8831d4d355用鼠标拖动小方块ae29c299084ab1e4f6fe3ffee20ef0dd054bdf357c58b8a65c66d7c19c8e4d114%39528cedfa926ea0c01e69ef5b2ea9b0
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window.onload = function() {

var lineDiv = document.getElementById('lineDiv'); //长线条
var minDiv = document.getElementById('minDiv'); //小方块
var minVals = document.getElementById('vals'); //左长线
var msg = document.getElementById("msg"); //最上面的信息
var ifBool = false; //判断滑块是否按下

var lineDiv_W = getPosition(lineDiv).width; //长线的长度
var lineDiv_L = getPosition(lineDiv).left; //长线距离html的left

var minDiv_W = getPosition(minDiv).width; //滑块的长度
var minDiv_L = getPosition(minDiv).left; //滑块距离html的left

var Slider_W_MAX = lineDiv_W - minDiv_W; //滑块可以滑动的最大值px，范围是0~Slider_W_MAX

var minNum = 0; //最小值
var maxNum = 500; //最大值

var startNum = 100; //起始值
var endNum = 400; //结束值

var min_Px = Slider_W_MAX / maxNum * startNum; //滑块可以滑动的最小px
var max_Px = Slider_W_MAX / maxNum * endNum; //滑块可以滑动的最大px

var minDiv_left=0;   //当前滑块的位置
/*
    Slider_W_MAX     1元对应的px？                    1
      maxNum              1           1px对应的金额？
*/

function initSlider(initPX) { //设置滑块的初始位置
console.log(initPX);
minDiv_left=initPX;   //设置滑块的位置
minDiv.style.left = initPX + "px";
minVals.style.width = initPX + "px";
msg.innerText = parseInt(initPX / Slider_W_MAX * 100);
}

(function() { //初始化滑块位置
if(startNum >= 0) { //求出startNum对应的px
initSlider(Slider_W_MAX / maxNum * startNum)
}
})()

//事件
var start = function(e) {
ifBool = true;
//console.log("鼠标按下")
}
var move = function(e) {
//console.log("鼠标拖动")
if(ifBool) {
var x; //记录滑块距离html的距离left
if(!e.touches) { //兼容PC端
x = e.clientX;
} else { //兼容移动端
x = e.touches[0].pageX;
}

minDiv_left = x - lineDiv_L; //小方块相对于父元素（长线条）的left值 
if(minDiv_left >= Slider_W_MAX) {
minDiv_left = Slider_W_MAX;
}
if(minDiv_left 3ff0e30b61871bcc1fd55977171d05e1max_Px){
initSlider(max_Px);
}
if(minDiv_left<min_Px){
initSlider(min_Px);
}
ifBool = false;
}
//鼠标按下方块
minDiv.addEventListener("touchstart", start);
minDiv.addEventListener("mousedown", start);
//拖动
window.addEventListener("touchmove", move);
window.addEventListener("mousemove", move);
//鼠标松开
window.addEventListener("touchend", end);
window.addEventListener("mouseup", end);

//获取元素的绝对位置
function getPosition(node) {
var width = node.offsetWidth; //元素宽度
var height = node.offsetHeight; //元素高度
var left = node.offsetLeft; //获取元素相对于其根元素的left值var left
var top = node.offsetTop; //获取元素相对于其根元素的top值var top
current = node.offsetParent; // 取得元素的offsetParent

// 一直循环直到根元素　　
while(current != null) {　　
left += current.offsetLeft;　　
top += current.offsetTop;　　
current = current.offsetParent;　　
}
return {
"width": width,
"height": height,
"left": left,
"top": top
};
}
}
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73a6ac4ed44ffec12cee46588e518a5e

点击水波纹效果：

<!DOCTYPE html>
<html>
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
		<title>JS</title>
		<link rel="stylesheet" type="text/css" href="css/reset.css" />
		<script type="text/javascript" src=""></script>
		<style type="text/css" media="screen">
			ul {
				font-size: 0;
				position: relative;
				padding: 0;
				width: 480px;
				margin: 40px auto;
				user-select: none;
			}
			
			li {
				display: inline-block;
				width: 160px;
				height: 60px;
				background: #E95546;
				font-size: 16px;
				text-align: center;
				line-height: 60px;
				color: white;
				text-transform: uppercase;
				position: relative;
				overflow: hidden;
				cursor: pointer;
			}
			
			.slider {
				display: block;
				position: absolute;
				bottom: 0;
				left: 0;
				height: 4px;
				background: #1685D3;
				transition: all 0.5s;
			}
			
			.ripple {
				width: 0;
				height: 0;
				border-radius: 50%;
				background: rgba(255, 255, 255, 0.4);
				-webkit-transform: scale(0);
				-ms-transform: scale(0);
				transform: scale(0);
				position: absolute;
				opacity: 1;
			}
			
			.rippleEffect {
				-webkit-animation: rippleDrop .4s linear;
				animation: rippleDrop .4s linear;
			}
			
			@-webkit-keyframes rippleDrop {
				100% {
					-webkit-transform: scale(2);
					transform: scale(2);
					opacity: 0;
				}
			}
			
			@keyframes rippleDrop {
				100% {
					-webkit-transform: scale(2);
					transform: scale(2);
					opacity: 0;
				}
			}
		</style>

	</head>
	<body>
		<ul>
			<li>项目一</li>
			<li>项目二</li>
			<li>项目三</li>
			<li class="slider"></li>
		</ul>
	</body>
	<script>
		$("ul li").click(function(e) {

			if($(this).hasClass(&#39;slider&#39;)) {
				return;
			}

			var whatTab = $(this).index();

			var howFar = 160 * whatTab;

			$(".slider").css({
				left: howFar + "px"
			});

			$(".ripple").remove();

			var posX = $(this).offset().left,
				posY = $(this).offset().top,
				buttonWidth = $(this).width(),
				buttonHeight = $(this).height();
			console.log(posX, posY, buttonWidth, buttonHeight)

			$(this).append("<span class=&#39;ripple&#39;></span>");

			if(buttonWidth >= buttonHeight) {
				buttonHeight = buttonWidth;
			} else {
				buttonWidth = buttonHeight;
			}

			var x = e.pageX - posX - buttonWidth / 2;
			var y = e.pageY - posY - buttonHeight / 2;

			$(".ripple").css({
				width: buttonWidth,
				height: buttonHeight,
				top: y + &#39;px&#39;,
				left: x + &#39;px&#39;
			}).addClass("rippleEffect");

		});
	</script>

</html>

总结：以上就是本篇文的全部内容，希望能对大家的学习有所帮助。更多相关教程请访问JavaScript视频教程，jQuery视频教程，bootstrap教程！

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