js实现滑动密码框
<!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>drag</title>
<style>
*{
margin: 0;
padding: 0;
}
body{
padding: 20px;
}
/* 图形拼图验证码 */
.check{
width: 400px;
height: 300px;
background-repeat: no-repeat;
background-size: 100% 100%;
background-image: url(https://img0.baidu.com/it/u=2028084904,3939052004&fm=253&fmt=auto&app=138&f=JPEG?w=889&h=500);
position: relative;
}
.check::before{
content: '';
width: 50px;
height: 50px;
background: rgba(0, 0, 0, 0.5);
border: 1px solid #fff;
position: absolute;
top: 100px;
left: 280px;
}
.check-child{
content: '';
width: 50px;
height: 50px;
border: 1px solid #fff;
background-image: inherit;
background-repeat: inherit;
background-size: 400px 300px;
background-position: -280px -100px;
position: absolute;
top: 100px;
left: 0;
}
/* 拖动条 */
.drag{
width: 400px;
height: 50px;
background-color: #e3e3e3;
margin-top: 10px;
position: relative;
}
/* 可拖动的盒子 */
.drag-child{
width: 50px;
height: 50px;
background-color: aquamarine;
z-index: 10;
position: absolute;
top: 0;
left: 0;
}
/* 提示文字说明 */
.drag-tips{
display: flex;
align-items: center;
justify-content: end;
width: 95%;
height: 100%;
margin: 0 auto;
font-size: 12px;
color: #8a8a8a;
user-select: none;
z-index: 1;
position: absolute;
top: 0;
left: 0;
}
@keyframes move {
to {
transform: translateX(0);
}
}
</style>
</head>
<body>
<!-- 图形校验区域 -->
<div class="check">
<!-- 被校验区域 -->
<div class="check-child"></div>
</div>
<!-- 拖动条 -->
<div class="drag">
<!-- 操作说明 -->
<div class="drag-tips">
<span>按住左边按钮向右拖动完成上方图像验证</span>
</div>
<!-- 可拖动的盒子 -->
<div class="drag-child"></div>
</div>
</body>
<script>
// 获取元素实例
const drag = document.querySelector('.drag-child')
// 图形被校验区域
const check = document.querySelector('.check-child')
// 通过校验回调
const success = () => {
console.log('通过校验');
}
// 声明鼠标按下事件
const dragMouseDown = event => {
// 添加鼠标移动事件
document.addEventListener('mousemove', dragMouseMove)
}
// 监听鼠标移动事件
const dragMouseMove = event => {
// 获取当前 x 轴坐标
const { pageX } = event
if(pageX < 0 || pageX > 350){
return
}
// 修改可移动盒子的 x 轴坐标
drag.style.transform = `translateX(${pageX}px)`
// 修改被校验区域坐标
check.style.transform = `translateX(${pageX}px)`
if(pageX >= 278 && pageX <= 285){
// 执行回调
success()
}
}
// 结束鼠标监听事件
const dragMouseUP = event => {
// 移除鼠标移动事件
document.removeEventListener('mousemove', dragMouseMove)
// 获取当前 x 轴坐标
const { pageX } = event
if(pageX < 278 || pageX > 285){
// 修改可移动盒子的 x 轴坐标
drag.style.animation = 'move 0.5s ease-in-out'
// 修改被校验区域坐标
check.style.animation = 'move 0.5s ease-in-out'
// 动画结束监听回调
const animationEnd = ()=>{
// 修改可移动盒子的 x 轴坐标
drag.style.transform = `translateX(${0}px)`
// 修改被校验区域坐标
check.style.transform = `translateX(${0}px)`
// 清除动画属性
drag.style.animation = ''
check.style.animation = ''
// 移出动画结束监听
document.removeEventListener("animationend", animationEnd)
}
// 添加动画结束监听
document.addEventListener("animationend", animationEnd)
}
}
// 添加鼠标按下事件
document.addEventListener('mousedown', dragMouseDown)
// 添加鼠标弹起事件
document.addEventListener('mouseup', dragMouseUP)
</script>
</html>
转载 https://juejin.cn/post/7175818459379417146
