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js拖动滑块和点击水波纹效果实例代码

2017年11月30日 作者：laozhang

拖动滑块效果：

先看看效果图：

<!doctype html>
<html>
 
 <head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
  <title>Document</title>
  <script type="text/javascript" src=""></script>
 
  <style type="text/css">
   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;
   }
  </style>
  <script type="text/javascript">
   $(function() {
    $(".input_1").change(function() {
     $("p.p1").text($(this).val());
    })
 
    setInterval(function() {
     $("p.p2").text($(".input_2").val());
    }, 0.01)
   })
  </script>
 </head>
 
 <body>
  <p>添加change事件</p>
  <input type="range" step="0.01" min="0" max="5" value="0">
  <p>0</p>
  <p>添加定时器</p>
  <input type="range" step="0.01" min="0" max="5" value="0">
  <p>0</p>
 </body>
 
</html>

<!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('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
};
}
}
</script>
</body>
 
</html>

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('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
//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

<!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: 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;
}
</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="vals"></div>
<!-- -->
<div id="minDiv"></div>
<!-- -->
</div>
<script>
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 < 0) {
minDiv_left = 0;
}
 
//设置拖动后小方块的left值
initSlider(minDiv_left)
 
}
}
var end = function(e) {
if(minDiv_left>max_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
};
}
}
</script>
</body>
 
</html>

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" rel="external nofollow" />
  <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('slider')) {
    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='ripple'></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 + 'px',
    left: x + 'px'
   }).addClass("rippleEffect");
 
  });
 </script>
 
</html>

相关链接