滑动验证，没有图片 ，就一个滑动
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
">#ffffff;
}
.box {
width: 500px;
height: 60px;
position: relative;
left: 50%;
margin-left: -250px;
margin-top: 50px;
background: #eae4e4;
display: flex;
align-items: center;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
.btn {
height: 100%;
width: 60px;
background: #fbf5f5;
box-sizing: border-box;
border: 2px solid #cecaca;
position: absolute;
left: 0;
top: 0;
display: flex;
align-items: center;
justify-content: center;
font-size: 25px;
color: #d5d4d4;
z-index: 999;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
.btn:hover {
cursor: pointer;
}
.text {
font-size: 20px;
position: absolute;
left: 50%;
margin-left: -60px;
">transparent;
z-index: 2;
}
.bg {
height: 100%;
position: absolute;
">#4cbb42;
z-index: 1;
}
</style>
</head>
<body>
<div class="box">
<div class="btn">>></div>
<p class="text">拖动滑块验证</p>
<div class="bg"></div>
</div>
<script>
window.onload = function () {
// 封装-选择器,内部可以做兼容性
function querySelect(name) {
return document.querySelector(name)
}
// 验证成功
// 验证失败
// 触发事件 onmousedown按下 onmousemove移动 onmouseup松开
let btn = querySelect('.btn') // 滑块 对IE6/7 有兼容性问题
let box = querySelect('.box') // box
let text = querySelect('.text') // 文字
let bg = querySelect('.bg') // 背景
btn.onmousedown = (eventDown) => {
// event.clientX;clientY 鼠标当前X轴Y轴坐标
let downX = eventDown.clientX
console.log(downX)
document.onmousemove = (eventMove) => {
// 移动的X坐标 - 按下的X坐标
let moveX = eventMove.clientX - downX
let boxWidth = box.offsetWidth
let btnWidth = btn.offsetWidth
if (moveX >= 0 && moveX <= (boxWidth - btnWidth)) { // 可移动的范围
btn.style.left = moveX + 'px' // 滑块绝对定位
bg.style.width = moveX + 'px' // 设备背景的宽度
}
if (moveX >= (boxWidth - btnWidth)) {
btn.style.left = (boxWidth - btnWidth) + 'px' // 滑块绝对定位
bg.style.width = (boxWidth - btnWidth) + 'px' // 设备背景的宽度
// 文字提醒
text.innerText = '验证成功'
text.style.color = '#fff'
// 事件清除-按下、移动
btn.onmousedown = null
document.onmousemove = null
btn.onmouseup = null
}
}
}
btn.onmouseup = (eventUp) => {
// 松开后回到原点
// 清除移动事件
btn.style.left = 0 + 'px'
bg.style.width = 0 + 'px'
document.onmousemove = null
}
}
</script>
</body>
</html>
