欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

前端滑动验证+拼图滑动验证效果

程序员文章站 2023-12-25 18:26:57
...

相信大家都玩过B站,B站在登陆的时候有个拼图滑动验证,今天就整合一下前端实现的滑动验证

拖动滑动验证(无背景图片)

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>拖动滑块验证</title>
</head>
<body>
  <meta charset="utf8">
    <style>
        /* 滑动控件容器,灰色背景 */
        #dragContainer {
            position: relative;
            display: inline-block;
            background: #e8e8e8;
            width: 300px;
            height: 33px;
            border: 2px solid #e8e8e8;
        }
        /* 滑块左边部分,绿色背景 */
        #dragBg {
            position: absolute;
            background-color: #7ac23c;
            width: 0px;
            height: 100%;
        }
        /* 滑动验证容器文本 */
        #dragText {
            position: absolute;
            width: 100%;
            height: 100%;
            /* 文字水平居中 */
            text-align: center;
            /* 文字垂直居中,这里不能用百分比,因为百分比是相对原始line-height的,而非div高度 */
            line-height: 33px;
            /* 文本不允许选中 */
            user-select: none;
            -webkit-user-select: none;
        }
        /* 滑块 */
        #dragHandler {
            position: absolute;
            width: 40px;
            height: 100%;
            cursor: move;
        }
        /* 滑块初始背景 */
        .dragHandlerBg {
            background: #fff no-repeat center url("data:image/png;base64,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");
        }
        /* 验证成功时的滑块背景 有√*/
        .dragHandlerOkBg {
            background: #fff no-repeat center url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAA3hpVFh0WE1MOmNvbS5hZG9iZS54bXAAAAAAADw/eHBhY2tldCBiZWdpbj0i77u/IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5UY3prYzlkIj8+IDx4OnhtcG1ldGEgeG1sbnM6eD0iYWRvYmU6bnM6bWV0YS8iIHg6eG1wdGs9IkFkb2JlIFhNUCBDb3JlIDUuNS1jMDIxIDc5LjE1NTc3MiwgMjAxNC8wMS8xMy0xOTo0NDowMCAgICAgICAgIj4gPHJkZjpSREYgeG1sbnM6cmRmPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5LzAyLzIyLXJkZi1zeW50YXgtbnMjIj4gPHJkZjpEZXNjcmlwdGlvbiByZGY6YWJvdXQ9IiIgeG1sbnM6eG1wTU09Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC9tbS8iIHhtbG5zOnN0UmVmPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvc1R5cGUvUmVzb3VyY2VSZWYjIiB4bWxuczp4bXA9Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC8iIHhtcE1NOk9yaWdpbmFsRG9jdW1lbnRJRD0ieG1wLmRpZDo0ZDhlNWY5My05NmI0LTRlNWQtOGFjYi03ZTY4OGYyMTU2ZTYiIHhtcE1NOkRvY3VtZW50SUQ9InhtcC5kaWQ6NDlBRDI3NjVGMkQ2MTFFNEI5NDBCMjQ2M0ExMDQ1OUYiIHhtcE1NOkluc3RhbmNlSUQ9InhtcC5paWQ6NDlBRDI3NjRGMkQ2MTFFNEI5NDBCMjQ2M0ExMDQ1OUYiIHhtcDpDcmVhdG9yVG9vbD0iQWRvYmUgUGhvdG9zaG9wIENDIDIwMTQgKE1hY2ludG9zaCkiPiA8eG1wTU06RGVyaXZlZEZyb20gc3RSZWY6aW5zdGFuY2VJRD0ieG1wLmlpZDphNWEzMWNhMC1hYmViLTQxNWEtYTEwZS04Y2U5NzRlN2Q4YTEiIHN0UmVmOmRvY3VtZW50SUQ9InhtcC5kaWQ6NGQ4ZTVmOTMtOTZiNC00ZTVkLThhY2ItN2U2ODhmMjE1NmU2Ii8+IDwvcmRmOkRlc2NyaXB0aW9uPiA8L3JkZjpSREY+IDwveDp4bXBtZXRhPiA8P3hwYWNrZXQgZW5kPSJyIj8+k+sHwwAAASZJREFUeNpi/P//PwMyKD8uZw+kUoDYEYgloMIvgHg/EM/ptHx0EFk9I8wAoEZ+IDUPiIMY8IN1QJwENOgj3ACo5gNAbMBAHLgAxA4gQ5igAnNJ0MwAVTsX7IKyY7L2UNuJAf+AmAmJ78AEDTBiwGYg5gbifCSxFCZoaBMCy4A4GOjnH0D6DpK4IxNSVIHAfSDOAeLraJrjgJp/AwPbHMhejiQnwYRmUzNQ4VQgDQqXK0ia/0I17wJiPmQNTNBEAgMlQIWiQA2vgWw7QppBekGxsAjIiEUSBNnsBDWEAY9mEFgMMgBk00E0iZtA7AHEctDQ58MRuA6wlLgGFMoMpIG1QFeGwAIxGZo8GUhIysmwQGSAZgwHaEZhICIzOaBkJkqyM0CAAQDGx279Jf50AAAAAABJRU5ErkJggg==");
        }
    </style>
    <script>
       //加载(事件会在页面加载完成后触发)
        window.onload = function() {
            //获取滑动控件容器,灰色背景
            var dragContainer = document.getElementById("dragContainer");
            //获取滑块左边部分,绿色背景
            var dragBg = document.getElementById("dragBg");
            //获取滑动验证容器文本
            var dragText = document.getElementById("dragText");
            //获取滑块
            var dragHandler = document.getElementById("dragHandler");
        </span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">滑块的最大偏移量                 =     滑动验证容器文本长度                  -      滑块长度</span>
        <span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> maxHandlerOffset </span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;"> dragContainer.clientWidth </span><span style="background-color: #f5f5f5; color: #000000;">-</span><span style="background-color: #f5f5f5; color: #000000;"> dragHandler.clientWidth;
        </span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">是否验证成功的标记</span>
        <span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> isVertifySucc </span><span style="background-color: #f5f5f5; color: #000000;">=</span> <span style="background-color: #f5f5f5; color: #0000ff;">false</span><span style="background-color: #f5f5f5; color: #000000;">;
        
        initDrag();

        </span><span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;"> initDrag() {
            </span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">在滑动验证容器文本写入“拖动滑块验证”</span>

dragText.textContent = 拖动滑块验证;
//给滑块添加鼠标按下监听
dragHandler.addEventListener(mousedown, onDragHandlerMouseDown);
}

       </span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">选中滑块</span>
        <span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;"> onDragHandlerMouseDown() {
            </span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">鼠标移动监听</span>

document.addEventListener(mousemove, onDragHandlerMouseMove);
//鼠标松开监听
document.addEventListener(mouseup, onDragHandlerMouseUp);
}

       </span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">滑块移动</span>
        <span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;"> onDragHandlerMouseMove() {
            </span><span style="background-color: #f5f5f5; color: #008000;">/*</span><span style="background-color: #f5f5f5; color: #008000;">
            html元素不存在width属性,只有clientWidth
            offsetX是相对当前元素的,clientX和pageX是相对其父元素的
            </span><span style="background-color: #f5f5f5; color: #008000;">*/</span>
           <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">滑块移动量</span>
            <span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> left </span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;"> event.clientX </span><span style="background-color: #f5f5f5; color: #000000;">-</span><span style="background-color: #f5f5f5; color: #000000;"> dragHandler.clientWidth </span><span style="background-color: #f5f5f5; color: #000000;">/</span> <span style="background-color: #f5f5f5; color: #000000;">2</span><span style="background-color: #f5f5f5; color: #000000;">;
            </span><span style="background-color: #f5f5f5; color: #008000;">//

if(left < 0) {
left
= 0;
//如果滑块移动量 > 滑块的最大偏移量 ,则调用验证成功函数
} else if(left > maxHandlerOffset) {
left
= maxHandlerOffset;
verifySucc();
}
//滑块移动量
dragHandler.style.left = left + px;
//绿色背景的长度
dragBg.style.width = dragHandler.style.left;
}

       </span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">松开滑块函数</span>
        <span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;"> onDragHandlerMouseUp() {
            </span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">移除鼠标移动监听</span>

document.removeEventListener(mousemove, onDragHandlerMouseMove);
//移除鼠标松开监听
document.removeEventListener(mouseup, onDragHandlerMouseUp);
//初始化滑块移动量
dragHandler.style.left = 0;
//初始化绿色背景
dragBg.style.width = 0;
}

        </span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">验证成功</span>
        <span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;"> verifySucc() {
            </span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">成功标记,不可回弹</span>

isVertifySucc = false;
//容器文本的文字改为白色“验证通过”字体
dragText.textContent = 验证通过;
dragText.style.color
= white;
//验证通过的滑块背景
dragHandler.setAttribute(class, dragHandlerOkBg);
//移除鼠标按下监听
dragHandler.removeEventListener(mousedown, onDragHandlerMouseDown);
//移除 鼠标移动监听
document.removeEventListener(mousemove, onDragHandlerMouseMove);
//移除鼠标松开监听
document.removeEventListener(mouseup, onDragHandlerMouseUp);
// 匹配成功以后写入你要跳转的页面
window.location.href=成功页面.html;
};
}
</script>
</head>
<body>
<div id=“dragContainer”><!– 容器初始背景 –>
<div id=“dragBg”></div><!– 绿色背景 –>
<div id=“dragText”></div><!– 滑动容器文本 –>
<div id=“dragHandler” class=“dragHandlerBg”></div>
</div> <!– 滑块 滑块初始背景 –>
</body>
</html>

效果图:

前端滑动验证+拼图滑动验证效果

 

图片滑动验证

 css

.block {
  position: absolute;
  left: 0;
  top: 0;
}
 
.sliderContainer {
  position: relative;
  text-align: center;
  width: 310px;
  height: 40px;
  line-height: 40px;
  margin-top: 15px;
  background: #f7f9fa;
  color: #45494c;
  border: 1px solid #e4e7eb;
}
 
.sliderContainer_active .slider {
  height: 38px;
  top: -1px;
  border: 1px solid #1991FA;
}
 
.sliderContainer_active .sliderMask {
  height: 38px;
  border-width: 1px;
}
 
.sliderContainer_success .slider {
  height: 38px;
  top: -1px;
  border: 1px solid #52CCBA;
  background-color: #52CCBA !important;
}
 
.sliderContainer_success .sliderMask {
  height: 38px;
  border: 1px solid #52CCBA;
  background-color: #D2F4EF;
}
 
.sliderContainer_success .sliderIcon {
  background-position: 0 0 !important;
}
 
.sliderContainer_fail .slider {
  height: 38px;
  top: -1px;
  border: 1px solid #f57a7a;
  background-color: #f57a7a !important;
}
 
.sliderContainer_fail .sliderMask {
  height: 38px;
  border: 1px solid #f57a7a;
  background-color: #fce1e1;
}
 
.sliderContainer_fail .sliderIcon {
  top: 14px;
  background-position: 0 -82px !important;
}
.sliderContainer_active .sliderText, .sliderContainer_success .sliderText, .sliderContainer_fail .sliderText {
  display: none;
}
 
.sliderMask {
  position: absolute;
  left: 0;
  top: 0;
  height: 40px;
  border: 0 solid #1991FA;
  background: #D1E9FE;
}
 
.slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 40px;
  background: #fff;
  box-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition: background .2s linear;
}
 
.slider:hover {
  background: #1991FA;
}
 
.slider:hover .sliderIcon {
  background-position: 0 -13px;
}
 
.sliderIcon {
  position: absolute;
  top: 15px;
  left: 13px;
  width: 14px;
  height: 12px;
  background: url(http://cstaticdun.126.net//2.6.3/images/icon_light.f13cff3.png) 0 -26px;
  background-size: 34px 471px;
}
 
.refreshIcon {
  position: absolute;
  right: 0;
  top: 0;
  width: 34px;
  height: 34px;
  cursor: pointer;
  background: url(http://cstaticdun.126.net//2.6.3/images/icon_light.f13cff3.png) 0 -437px;
  background-size: 34px 471px;
}

js

(function (window) {
  const l = 42, // 滑块边长
    r = 9, // 滑块半径
    w = 310, // canvas宽度
    h = 155, // canvas高度
    PI = Math.PI
  const L = l + r * 2 + 3 // 滑块实际边长
 
  function getRandomNumberByRange (start, end) {
    return Math.round(Math.random() * (end - start) + start)
  }
 
  function createCanvas (width, height) {
    const canvas = createElement('canvas')
    canvas.width = width
    canvas.height = height
    return canvas
  }
 
  function createImg (onload) {
    const img = createElement('img')
    img.crossOrigin = "Anonymous"
    img.onload = onload
    img.onerror = () => {
      img.src = getRandomImg()
    }
    img.src = getRandomImg()
    return img
  }
 
  function createElement (tagName, className) {
    const elment = document.createElement(tagName)
    elment.className = className
    return elment
  }
 
  function addClass (tag, className) {
    tag.classList.add(className)
  }
 
  function removeClass (tag, className) {
    tag.classList.remove(className)
  }
 
  function getRandomImg () {
    return 'https://picsum.photos/300/150/?image=' + getRandomNumberByRange(0, 1084)
  }
 
  function draw (ctx, x, y, operation) {
    ctx.beginPath()
    ctx.moveTo(x, y)
    ctx.arc(x + l / 2, y - r + 2, r, 0.72 * PI, 2.26 * PI)
    ctx.lineTo(x + l, y)
    ctx.arc(x + l + r - 2, y + l / 2, r, 1.21 * PI, 2.78 * PI)
    ctx.lineTo(x + l, y + l)
    ctx.lineTo(x, y + l)
    ctx.arc(x + r - 2, y + l / 2, r + 0.4, 2.76 * PI, 1.24 * PI, true)
    ctx.lineTo(x, y)
    ctx.lineWidth = 2
    ctx.fillStyle = 'rgba(255, 255, 255, 0.7)'
    ctx.strokeStyle = 'rgba(255, 255, 255, 0.7)'
    ctx.stroke()
    ctx[operation]()
    ctx.globalCompositeOperation = 'overlay'
  }
 
  function sum (x, y) {
    return x + y
  }
 
  function square (x) {
    return x * x
  }
 
  class jigsaw {
    constructor ({ el, onSuccess, onFail, onRefresh }) {
      el.style.position = el.style.position || 'relative'
      this.el = el
      this.onSuccess = onSuccess
      this.onFail = onFail
      this.onRefresh = onRefresh
    }
 
    init () {
      this.initDOM()
      this.initImg()
      this.bindEvents()
    }
 
    initDOM () {
      const canvas = createCanvas(w, h) // 画布
      const block = canvas.cloneNode(true) // 滑块
      const sliderContainer = createElement('div', 'sliderContainer')
      const refreshIcon = createElement('div', 'refreshIcon')
      const sliderMask = createElement('div', 'sliderMask')
      const slider = createElement('div', 'slider')
      const sliderIcon = createElement('span', 'sliderIcon')
      const text = createElement('span', 'sliderText')
 
      block.className = 'block'
      text.innerHTML = '向右滑动填充拼图'
 
      const el = this.el
      el.appendChild(canvas)
      el.appendChild(refreshIcon)
      el.appendChild(block)
      slider.appendChild(sliderIcon)
      sliderMask.appendChild(slider)
      sliderContainer.appendChild(sliderMask)
      sliderContainer.appendChild(text)
      el.appendChild(sliderContainer)
 
      Object.assign(this, {
        canvas,
        block,
        sliderContainer,
        refreshIcon,
        slider,
        sliderMask,
        sliderIcon,
        text,
        canvasCtx: canvas.getContext('2d'),
        blockCtx: block.getContext('2d')
      })
    }
 
    initImg () {
      const img = createImg(() => {
        this.draw()
        this.canvasCtx.drawImage(img, 0, 0, w, h)
        this.blockCtx.drawImage(img, 0, 0, w, h)
        const y = this.y - r * 2 - 1
        const ImageData = this.blockCtx.getImageData(this.x - 3, y, L, L)
        this.block.width = L
        this.blockCtx.putImageData(ImageData, 0, y)
      })
      this.img = img
    }
 
    draw () {
      // 随机创建滑块的位置
      this.x = getRandomNumberByRange(L + 10, w - (L + 10))
      this.y = getRandomNumberByRange(10 + r * 2, h - (L + 10))
      draw(this.canvasCtx, this.x, this.y, 'fill')
      draw(this.blockCtx, this.x, this.y, 'clip')
    }
 
    clean () {
      this.canvasCtx.clearRect(0, 0, w, h)
      this.blockCtx.clearRect(0, 0, w, h)
      this.block.width = w
    }
 
    bindEvents () {
      this.el.onselectstart = () => false
      this.refreshIcon.onclick = () => {
        this.reset()
        typeof this.onRefresh === 'function' && this.onRefresh()
      }
 
      let originX, originY, trail = [], isMouseDown = false
 
      const handleDragStart = function (e) {
        originX = e.clientX || e.touches[0].clientX
        originY = e.clientY || e.touches[0].clientY
        isMouseDown = true
      }
 
      const handleDragMove = (e) => {
        if (!isMouseDown) return false
        const eventX = e.clientX || e.touches[0].clientX
        const eventY = e.clientY || e.touches[0].clientY
        const moveX = eventX - originX
        const moveY = eventY - originY
        if (moveX < 0 || moveX + 38 >= w) return false
        this.slider.style.left = moveX + 'px'
        const blockLeft = (w - 40 - 20) / (w - 40) * moveX
        this.block.style.left = blockLeft + 'px'
 
        addClass(this.sliderContainer, 'sliderContainer_active')
        this.sliderMask.style.width = moveX + 'px'
        trail.push(moveY)
      }
 
      const handleDragEnd = (e) => {
        if (!isMouseDown) return false
        isMouseDown = false
        const eventX = e.clientX || e.changedTouches[0].clientX
        if (eventX == originX) return false
        removeClass(this.sliderContainer, 'sliderContainer_active')
        this.trail = trail
        const { spliced, verified } = this.verify()
        if (spliced) {
          if (verified) {
            addClass(this.sliderContainer, 'sliderContainer_success')
            typeof this.onSuccess === 'function' && this.onSuccess()
          } else {
            addClass(this.sliderContainer, 'sliderContainer_fail')
            this.text.innerHTML = '再试一次'
            this.reset()
          }
        } else {
          addClass(this.sliderContainer, 'sliderContainer_fail')
          typeof this.onFail === 'function' && this.onFail()
          setTimeout(() => {
            this.reset()
          }, 1000)
        }
      }
      this.slider.addEventListener('mousedown', handleDragStart)
      this.slider.addEventListener('touchstart', handleDragStart)
      document.addEventListener('mousemove', handleDragMove)
      document.addEventListener('touchmove', handleDragMove)
      document.addEventListener('mouseup', handleDragEnd)
      document.addEventListener('touchend', handleDragEnd)
    }
 
    verify () {
      const arr = this.trail // 拖动时y轴的移动距离
      const average = arr.reduce(sum) / arr.length
      const deviations = arr.map(x => x - average)
      const stddev = Math.sqrt(deviations.map(square).reduce(sum) / arr.length)
      const left = parseInt(this.block.style.left)
      return {
        spliced: Math.abs(left - this.x) < 10,
        verified: stddev !== 0, // 简单验证下拖动轨迹,为零时表示Y轴上下没有波动,可能非人为操作
      }
    }
 
    reset () {
      this.sliderContainer.className = 'sliderContainer'
      this.slider.style.left = 0
      this.block.style.left = 0
      this.sliderMask.style.width = 0
      this.clean()
      this.img.src = getRandomImg()
    }
 
  }
 
  window.jigsaw = {
    init: function (opts) {
      return new jigsaw(opts).init()
    }
  }
}(window))

 引用页面:

<link rel="stylesheet" href="../css/hdyz.css">
<script src="../js/myyz.js"></script>
<div id="captcha"></div>
<script type="text/javascript">
  jigsaw.init({
    el: document.getElementById('captcha'),
  })
</script>

效果图:

前端滑动验证+拼图滑动验证效果

相关标签: 小效果

上一篇:

下一篇: