Slider 滑块 (两种方式)
通过拖动滑块在一个固定区间内进行滑动
第一种
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
body{
margin: 50px 0 ;
}
.box {
width: 500px;
height: 10px;
background-color: #ccc;
margin: 100px 0 0 100px;
position: relative;
border-radius: 5px;
}
.ball,
.ball2 {
position: absolute;
left: 0;
top: 50%;
transform: translateY(-50%);
width: 20px;
height: 20px;
background-color: skyblue;
border: 2px solid blue;
border-radius: 50%;
}
.ball2 {
left: 480px;
background-color: skyblue;
}
.slide {
height: 100%;
width: 0;
position: absolute;
top: 0;
left: 0;
background-color: blue;
}
body {
margin: 0;
}
</style>
</head>
<body>
<div class="box">
<div class="slide"></div>
<div class="ball" ball></div>
<div class="ball2" ball></div>
</div>
</body>
</html>
<script>
// 获取盒子的距离 球 线
let boxLeft=document.querySelector(".box").offsetLeft;
let balls=document.querySelectorAll(".box>div[ball]");
let slide=document.querySelector(".slide");
// 声明一个函数 info
function info(){
// 获取两球之间的距离的绝对值 的width abs 取绝对值
let width=Math.abs(balls[0].offsetLeft-balls[1].offsetLeft);
// 球的最小值 的 left
let left=Math.min(...[...balls].map((e)=>e.offsetLeft))+10;
// 赋值给线段
slide.style.width=width+'px';
slide.style.left=left+'px';
}
info()
balls.forEach((item,index)=>{
item.onmousedown=function(e){
let x=e.offsetX;
document.onmousemove=function(e){
let tox=e.pageX-boxLeft-x;
tox=tox>480?480:tox<0?0:tox;
item.style.left=tox+'px'
info()
}
document.onmouseup=function(){
document.onmousemove=null;
}
return false
}
})
</script>
第二种
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
body{
margin: 0;
}
#slide{
width: 1000px;
height: 40px;
position: relative;
background-color: #ccc;
}
#slide input{
width: 40px;
height: 40px;
position: absolute;
top: 0;
z-index: 1;
}
#slide .b{
left: 40px;
}
#slide .c{
background-color: pink;
position: absolute;
height: 40px;
}
</style>
</head>
<body>
<div id="slide">
<input type="radio" class="a" checked>
<input type="radio" class="b" checked>
<div class="c"></div>
</div>
</body>
<script>
var s=document.querySelectorAll("input");
var c=document.querySelector(".c");
s.forEach((item,index)=>{
item.onmousedown=function(e){
document.onmousemove=(e)=>{
if(e.pageX<0 || e.pageX>960) return false;
this.style.left=e.pageX+'px';
let a=s[0].offsetLeft;
let b=s[1].offsetLeft;
c.style.left=Math.min(a,b)+20+'px';
c.style.width=Math.abs(a-b)+'px';
}
document.onmouseup=function(){
document.onmousemove=null
}
}
})
</script>
</html>
两种思路有些相同之处,,本人菜鸟一枚,,还望高手勿喷!!!!