Home >Web Front-end >JS Tutorial >js implements sliding slider verification (with code)

js implements sliding slider verification (with code)

不言
不言Original
2018-08-15 11:30:315524browse

The content this article brings to you is about js implementation of sliding slider verification (with code). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

html:
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="pintu.css" type="text/css">
</head>
<body>
    <div>
        <div>
            <!--<img src="image/1.png">-->
            <div></div>
            <div></div>
        </div>
        <div>
            <span></span>
            <span>拖动滑块</span>
        </div>
    </div>
<script src="jquery.js"></script>
<script src="pintu.js"></script>
</body>
</html>
css:
.box {
    width: 300px;
    background-color: palevioletred;
    padding: 20px;
    background-color: #fff;
    box-shadow: 2px 2px 8px 0 rgba(0, 0, 0, 0.4);
}

.imgBox img {
    width: 100%;
}

.imgBox {
    position: relative;
    width: 300px;
    overflow: hidden;
    box-shadow: 0 0 8px 0 rgba(0, 0, 0, 0.4);
}

.verify {
    position: absolute;
    left: 10px;
    width: 38px;
    height: 38px;
    top: 50%;
    border-radius: 5px;
    background-repeat: no-repeat;
    background-attachment: scroll;
    background-size: 300px;
    box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.4), 0 0 10px 0 rgba(90, 90, 90, 0.4);
    z-index: 1;
}

.verified {
    position: absolute;
    width: 38px;
    height: 38px;
    top: 50%;
    right: 10px;
    border-radius: 5px;
    background-color: rgba(0, 0, 0, 0.1);
    box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.4) inset;
}

.handle {
    display: flex;
    align-items: center;
    position: relative;
    height: 30px;
    border-radius: 20px;
    margin: 20px 0;
    padding: 4px 0 4px 70px;
    box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.2) inset;
    background: #f5f5f5;
    user-select: none;
}

.swiper {
    position: absolute;
    top: -7px;
    left: 0px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: pink;
    box-shadow: 2px 2px 6px 0 rgba(0, 0, 0, 0.2);
    z-index: 2;
}



.text {
    color: #aaa;
    position: relative;
    z-index: 1;
    width: 100%;
    border-radius: 8px;
    padding-left: 20px;
    margin-left: -30px;
    background: -webkit-gradient(linear, left top, right top, color-stop(0, #f1f1f1),  color-stop(1, #f5f5f5));
    transition: opacity 0.5s ease-in-out;
    -webkit-animation: slidetounlock 2s infinite;
}
@keyframes slidetounlock {
    0% {
        background-position: -100px 0
    }
    50%{
        background-position: 0px 0
    }
    100% {
        background-position: 100px 0
    }
}
js:
var box = $('.box'),
    imgBox = $('.imgBox'),
    handle = $('.handle')
swiper = $('.swiper'),
    text = $('.text'),
    verify = $('.verify'),
    verified = $('.verified')

$(function () {
    // 随机添加背景图
    refreshImg()

    window.onload = start()
})


function start() {
    var verImg = $('.verImg')[0];

    if (verImg) {
        verImg.onload = function () {
            //获取图片的高度
            var imgH = this.clientHeight;

            //随机生成坐标(图片框固定宽度为300px 高度不定)
            var verX = 150 * (1 + Math.random()) - 38,
                verY = imgH / 4 + Math.random() * imgH / 2;
            //用户滑动函数
            fnDown(verX, verY);

        }
    }
}

function fnDown(verX, verY) {
    swiper.mousedown(function () {
        e=event || window.event
        e.stopPropagation()//阻止冒泡行为(让子元素与父元素的响应分离)

        //30为模块的宽度
        verify.css({
            display: 'block',
            top: `${verY}px`,
            'background-position': `-${verX}px -${verY}px`
        })
        verified.css({display: 'block', left: `${verX}px`, top: `${verY}px`})

        // 获取鼠标到按钮的距离
        var disX = e.clientX - $(this).offset().left,
            disY = e.clientY - $(this).offset().top;
        text.css('opacity', '0');

        //防止重复绑定多次触发
        box.unbind('mousemove');
        box.unbind('mouseup');

        //移动
        box.bind('mousemove', function () {
            e = event || window.event;
            fnMove(e, disX, disY);
        })

        //释放
        box.bind('mouseup', function () {
            var stopL = verify.offset().left - 28;

            //误差在2px以内则算验证成功
            if (Math.abs(stopL - verX) > 2) {
                alert('验证失败');
            } else {
                alert('验证成功');
            }
            //解除绑定,并将滑块模块归位
            box.unbind('mousemove');
            swiper.css('left', '0px');
            verify.css('left', '10px');
            text.css('opacity', '1')
            box.unbind('mouseup');
        })
    })
}

function fnMove(e, posX, posY) {
    // 这里的e是以鼠标为参考
    var l = e.clientX - posX - $(handle).offset().left,
        winW = $(handle).width() + 29
    // 限制拖动范围只能在handle中
    if (l 3f6d6d5c49961631378f2423c46d3b58 winW) {
        l = winW
    }

    swiper.css('left', `${l}px`)
    verify.css('left', `${l + 10}px`)
}

function refreshImg() {

    verify.hide()
    verified.hide()

    var verImg = $('.verImg')
    if (verImg.length) {
        verImg.attr('src', `image/1.png`)
    } else {
        imgBox.prepend(`865c9ee3e409b3abfe1d5ed7c0cf6d5b`)
    }
    verify.css('background-image', `url('image/1.png')`)
}

Related recommendations:

How to implement picture sliding verification code

js and canvas implementation Sliding puzzle verification code function

Implements dragging slider verification function based on JS component

js login sliding verification accomplish


The above is the detailed content of js implements sliding slider verification (with code). For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn