首页
所有分类
TAGS
文字工具 EMOJI BIBLE
编程 Javascript jQuery

html+jQuery实现拖动滑块图片拼图验证码插件【移动端适用】

Posted in jQuery onSeptember 10, 2019

电脑和手机移动端都适用的jQuery拖动滑块图片拼图验证码插件，通过鼠标拖动或触屏滑动填充拼图来进行安全验证，点击刷新可以更换当前待验证的图片。

HTML & css：

<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>拖动滑块图片拼图验证码插件</title>
<!--框架样式-->
<link href="css/bootstrap.min.css" rel="external nofollow" rel="stylesheet">
<!--图标样式-->
<link href="https://cdn.bootcss.com/font-awesome/5.7.2/css/all.min.css" rel="stylesheet">
<!--主要样式-->
<link href="disk/slidercaptcha.css" rel="external nofollow" rel="stylesheet" />
<style>
.slidercaptcha {
 margin: 0 auto;
 width: 314px;
 height: 286px;
 border-radius: 4px;
 box-shadow: 0 0 10px rgba(0, 0, 0, 0.125);
 margin-top: 40px;
}
.slidercaptcha .card-body {
 padding: 1rem;
}
.slidercaptcha canvas:first-child {
 border-radius: 4px;
 border: 1px solid #e6e8eb;
}
.slidercaptcha.card .card-header {
 background-image: none;
 background-color: rgba(0, 0, 0, 0.03);
}
.refreshIcon {
 top: -54px;
}
</style>
</head>
<body>
<div class="container-fluid">
 <div class="form-row">
 <div class="col-12">
 <div class="slidercaptcha card">
 <div class="card-header">
  <span>请完成安全验证</span>
 </div>
 <div class="card-body"><div id="captcha"></div></div>
 </div>
 </div>
 </div>
</div>
<script src="js/jquery-1.11.0.min.js" type="text/javascript"></script>
<script src="disk/longbow.slidercaptcha.js"></script>
<script>
 $('#captcha').sliderCaptcha({
 repeatIcon: 'fa fa-redo',
 setSrc: function () {
 return 'http://images.sdgxgz.com/Pic' + Math.round(Math.random() * 136) + '.jpg';
 },
 onSuccess: function () {
 alert('验证通过!');
 }
 });
</script>
</body>
</html>
disk/slidercaptcha.css：
body {
 overflow-x: hidden;
}
.block {
 position: absolute;
 left: 0;
 top: 0;
}
.sliderContainer {
 position: relative;
 text-align: center;
 line-height: 40px;
 background: #f7f9fa;
 color: #45494c;
 border-radius: 2px;
}
.sliderbg {
 position: absolute;
 left: 0;
 right: 0;
 top: 0;
 background-color: #f7f9fa;
 height: 40px;
 border-radius: 2px;
 border: 1px solid #e6e8eb;
}
.sliderContainer_active .slider {
 top: -1px;
 border: 1px solid #1991FA;
}
.sliderContainer_active .sliderMask {
 border-width: 1px 0 1px 1px;
}
.sliderContainer_success .slider {
 top: -1px;
 border: 1px solid #52CCBA;
 background-color: #52CCBA !important;
}
.sliderContainer_success .sliderMask {
 border: 1px solid #52CCBA;
 border-width: 1px 0 1px 1px;
 background-color: #D2F4EF;
}
.sliderContainer_success .sliderIcon:before {
 content: "\f00c";
}
.sliderContainer_fail .slider {
 top: -1px;
 border: 1px solid #f57a7a;
 background-color: #f57a7a !important;
}
.sliderContainer_fail .sliderMask {
 border: 1px solid #f57a7a;
 background-color: #fce1e1;
 border-width: 1px 0 1px 1px;
}
.sliderContainer_fail .sliderIcon:before {
 content: "\f00d";
}
.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;
 border-radius: 2px;
}
.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;
 border-radius: 2px;
 display: flex;
 align-items: center;
 justify-content: center;
}
.slider:hover {
 background: #1991FA;
}
.slider:hover .sliderIcon {
 background-position: 0 -13px;
}
.sliderText {
 position: relative;
}
.sliderIcon {
}
.refreshIcon {
 position: absolute;
 right: 0;
 top: 0;
 cursor: pointer;
 margin: 6px;
 color: rgba(0,0,0,.25);
 font-size: 1rem;
 z-index: 5;
 transition: color .3s linear;
}
 .refreshIcon:hover {
 color: #6c757d;
 }
disk/longbow.slidercaptcha.js：
(function ($) {
 'use strict';
 var SliderCaptcha = function (element, options) {
  this.$element = $(element);
  this.options = $.extend({}, SliderCaptcha.DEFAULTS, options);
  this.$element.css({ 'position': 'relative', 'width': this.options.width + 'px', 'margin': '0 auto' });
  this.init();
 };
 SliderCaptcha.VERSION = '1.0';
 SliderCaptcha.Author = 'argo@163.com';
 SliderCaptcha.DEFAULTS = {
  width: 280,  // canvas宽度
  height: 155, // canvas高度
  PI: Math.PI,
  sliderL: 42, // 滑块边长
  sliderR: 9,  // 滑块半径
  offset: 5,  // 容错偏差
  loadingText: '正在加载中...',
  failedText: '再试一次',
  barText: '向右滑动填充拼图',
  repeatIcon: 'fa fa-repeat',
  maxLoadCount: 3,
  localImages: function () {
   return 'images/Pic' + Math.round(Math.random() * 4) + '.jpg';
  }
 };
 function Plugin(option) {
  return this.each(function () {
   var $this = $(this);
   var data = $this.data('lgb.SliderCaptcha');
   var options = typeof option === 'object' && option;
   if (data && !/reset/.test(option)) return;
   if (!data) $this.data('lgb.SliderCaptcha', data = new SliderCaptcha(this, options));
   if (typeof option === 'string') data[option]();
  });
 }
 $.fn.sliderCaptcha = Plugin;
 $.fn.sliderCaptcha.Constructor = SliderCaptcha;
 var _proto = SliderCaptcha.prototype;
 _proto.init = function () {
  this.initDOM();
  this.initImg();
  this.bindEvents();
 };
 _proto.initDOM = function () {
  var createElement = function (tagName, className) {
   var elment = document.createElement(tagName);
   elment.className = className;
   return elment;
  };
  var createCanvas = function (width, height) {
   var canvas = document.createElement('canvas');
   canvas.width = width;
   canvas.height = height;
   return canvas;
  };
  var canvas = createCanvas(this.options.width - 2, this.options.height) // 画布
  var block = canvas.cloneNode(true) // 滑块
  var sliderContainer = createElement('div', 'sliderContainer');
  var refreshIcon = createElement('i', 'refreshIcon ' + this.options.repeatIcon);
  var sliderMask = createElement('div', 'sliderMask');
  var sliderbg = createElement('div', 'sliderbg');
  var slider = createElement('div', 'slider');
  var sliderIcon = createElement('i', 'fa fa-arrow-right sliderIcon');
  var text = createElement('span', 'sliderText');
  block.className = 'block'
  text.innerHTML = this.options.barText;
  var el = this.$element;
  el.append($(canvas));
  el.append($(refreshIcon));
  el.append($(block));
  slider.appendChild(sliderIcon);
  sliderMask.appendChild(slider);
  sliderContainer.appendChild(sliderbg);
  sliderContainer.appendChild(sliderMask);
  sliderContainer.appendChild(text);
  el.append($(sliderContainer));
  Object.assign(this, {
   canvas,
   block,
   sliderContainer: $(sliderContainer),
   refreshIcon,
   slider,
   sliderMask,
   sliderIcon,
   text: $(text),
   canvasCtx: canvas.getContext('2d'),
   blockCtx: block.getContext('2d')
  })
 };
 _proto.initImg = function () {
  var that = this;
  var isIE = window.navigator.userAgent.indexOf('Trident') > -1;
  var L = this.options.sliderL + this.options.sliderR * 2 + 3; // 滑块实际边长
  var drawImg = function (ctx, operation) {
   var l = that.options.sliderL;
   var r = that.options.sliderR;
   var PI = that.options.PI;
   var x = that.x;
   var y = that.y;
   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 = isIE ? 'xor' : 'overlay'
  }
  var getRandomNumberByRange = function (start, end) {
   return Math.round(Math.random() * (end - start) + start);
  };
  var img = new Image();
  img.crossOrigin = "Anonymous";
  var loadCount = 0;
  img.onload = function () {
   // 随机创建滑块的位置
   that.x = getRandomNumberByRange(L + 10, that.options.width - (L + 10));
   that.y = getRandomNumberByRange(10 + that.options.sliderR * 2, that.options.height - (L + 10));
   drawImg(that.canvasCtx, 'fill');
   drawImg(that.blockCtx, 'clip');
   that.canvasCtx.drawImage(img, 0, 0, that.options.width - 2, that.options.height);
   that.blockCtx.drawImage(img, 0, 0, that.options.width - 2, that.options.height);
   var y = that.y - that.options.sliderR * 2 - 1;
   var ImageData = that.blockCtx.getImageData(that.x - 3, y, L, L);
   that.block.width = L;
   that.blockCtx.putImageData(ImageData, 0, y);
   that.text.text(that.text.attr('data-text'));
  };
  img.onerror = function () {
   loadCount++;
   if (window.location.protocol === 'file:') {
    loadCount = that.options.maxLoadCount;
    console.error("can't load pic resource file from File protocal. Please try http or https");
   }
   if (loadCount >= that.options.maxLoadCount) {
    that.text.text('加载失败').addClass('text-danger');
    return;
   }
   img.src = that.options.localImages();
  };
  img.setSrc = function () {
   var src = '';
   loadCount = 0;
   that.text.removeClass('text-danger');
   if ($.isFunction(that.options.setSrc)) src = that.options.setSrc();
   if (!src || src === '') src = 'https://picsum.photos/' + that.options.width + '/' + that.options.height + '/?image=' + Math.round(Math.random() * 20);
   if (isIE) { // IE浏览器无法通过img.crossOrigin跨域，使用ajax获取图片blob然后转为dataURL显示
    var xhr = new XMLHttpRequest()
    xhr.onloadend = function (e) {
     var file = new FileReader(); // FileReader仅支持IE10+
     file.readAsDataURL(e.target.response);
     file.onloadend = function (e) {
      img.src = e.target.result;
     }
    }
    xhr.open('GET', src);
    xhr.responseType = 'blob';
    xhr.send();
   } else img.src = src;
  };
  img.setSrc();
  this.text.attr('data-text', this.options.barText);
  this.text.text(this.options.loadingText);
  this.img = img
 };
 _proto.clean = function () {
  this.canvasCtx.clearRect(0, 0, this.options.width, this.options.height);
  this.blockCtx.clearRect(0, 0, this.options.width, this.options.height);
  this.block.width = this.options.width;
 };
 _proto.bindEvents = function () {
  var that = this;
  this.$element.on('selectstart', function () {
   return false;
  });
  $(this.refreshIcon).on('click', function () {
   that.text.text(that.options.barText);
   that.reset();
   if ($.isFunction(that.options.onRefresh)) that.options.onRefresh.call(that.$element);
  });
  var originX, originY, trail = [],
   isMouseDown = false
  var handleDragStart = function (e) {
   if (that.text.hasClass('text-danger')) return;
   originX = e.clientX || e.touches[0].clientX;
   originY = e.clientY || e.touches[0].clientY;
   isMouseDown = true;
  };
  var handleDragMove = function (e) {
   if (!isMouseDown) return false;
   var eventX = e.clientX || e.touches[0].clientX;
   var eventY = e.clientY || e.touches[0].clientY;
   var moveX = eventX - originX;
   var moveY = eventY - originY;
   if (moveX < 0 || moveX + 40 > that.options.width) return false;
   that.slider.style.left = (moveX - 1) + 'px';
   var blockLeft = (that.options.width - 40 - 20) / (that.options.width - 40) * moveX;
   that.block.style.left = blockLeft + 'px';
   that.sliderContainer.addClass('sliderContainer_active');
   that.sliderMask.style.width = (moveX + 4) + 'px';
   trail.push(moveY);
  };
  var handleDragEnd = function (e) {
   if (!isMouseDown) return false
   isMouseDown = false
   var eventX = e.clientX || e.changedTouches[0].clientX
   if (eventX == originX) return false
   that.sliderContainer.removeClass('sliderContainer_active');
   that.trail = trail
   var {
    spliced,
    verified
   } = that.verify()
   if (spliced && verified) {
    that.sliderContainer.addClass('sliderContainer_success');
    if ($.isFunction(that.options.onSuccess)) that.options.onSuccess.call(that.$element);
   } else {
    that.sliderContainer.addClass('sliderContainer_fail');
    if ($.isFunction(that.options.onFail)) that.options.onFail.call(that.$element);
    setTimeout(() => {
     that.text.text(that.options.failedText);
     that.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);
  document.addEventListener('mousedown', function () { return false; });
  document.addEventListener('touchstart', function () { return false; });
 };
 _proto.verify = function () {
  var sum = function (x, y) { return x + y; };
  var square = function (x) { return x * x; };
  var arr = this.trail // 拖动时y轴的移动距离
  var average = arr.reduce(sum) / arr.length;
  var deviations = arr.map(function (x) { return x - average; });
  var stddev = Math.sqrt(deviations.map(square).reduce(sum) / arr.length);
  var left = parseInt(this.block.style.left);
  return {
   spliced: Math.abs(left - this.x) < this.options.offset,
   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
  }
 };
 _proto.reset = function () {
  this.sliderContainer.removeClass('sliderContainer_fail sliderContainer_success');
  this.slider.style.left = 0
  this.block.style.left = 0
  this.sliderMask.style.width = 0
  this.clean()
  this.text.attr('data-text', this.text.text());
  this.text.text(this.options.loadingText);
  this.img.setSrc();
 };
})(jQuery);

附录1：需要注意css和js的引用路径；

总结

以上所述是小编给大家介绍的html+jQuery实现拖动滑块图片拼图验证码插件希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对三水点靠木网站的支持！如果你觉得本文对你有帮助，欢迎转载，烦请注明出处，谢谢！

html+jQuery实现拖动滑块图片拼图验证码插件【移动端适用】

- Author -

1

声明：登载此文出于传递更多信息之目的，并不意味着赞同其观点或证实其描述。

jQuery 相关文章推荐
jquery插件制作 自增长输入框实现代码
Aug 17 jQuery
jQuery查找dom的几种方法效率详解
May 17 jQuery
jQuery常用选择器详解
Jul 17 jQuery
jquery在vue脚手架中的使用方式示例
Aug 29 jQuery
jQuery使用动画队列自定义动画操作示例
Jun 16 jQuery
jQuery实现基本动画效果的方法详解
Sep 06 jQuery
jQuery判断自定义属性data-val用法示例
Jan 07 jQuery
jquery 键盘事件 keypress() keydown() keyup()用法总结
Oct 23 jQuery
jQuery实现消息弹出框效果
Dec 10 jQuery
jquery实现聊天机器人
Feb 08 jQuery
jQuery实现简单日历效果
Jul 05 jQuery
jquery实现鼠标悬浮弹出气泡提示框
Dec 23 jQuery
jQuery实现每日秒杀商品倒计时功能
Sep 06 #jQuery
JS秒杀倒计时功能完整实例【使用jQuery3.1.1】
Sep 03 #jQuery
JavaScript自动生成 年月范围 选择功能完整示例【基于jQuery插件】
Sep 03 #jQuery
Jquery动态列功能完整实例
Aug 30 #jQuery
jQuery - AJAX load() 实例用法详解
Aug 27 #jQuery
jQuery实现判断滚动条滚动到document底部的方法分析
Aug 27 #jQuery
解决jquery validate 验证不通过后验证正确的信息仍残留在label上的方法
Aug 27 #jQuery
捷克购物网站(26) 奥地利购物网站(28) 阿联酋购物网站(26) 菲律宾购物网站(13) 新西兰购物网站(42) 波兰购物网站(52) 智利购物网站(5) 斯洛伐克购物网站(7) 沙特阿拉伯购物网站(9) 卡塔尔购物网站(3)
You might like
php面向对象全攻略 （十一）__toString()用法 克隆对象 __call处理调用错误
2009/09/30 PHP
浅谈discuz密码加密的方式
2014/05/22 PHP
Yii2框架引用bootstrap中日期插件yii2-date-picker的方法
2016/01/09 PHP
php上传大文件设置方法
2016/04/14 PHP
EXT中xtype的含义分析
2010/01/07 Javascript
ASP中Sub和Function的区别说明
2020/08/30 Javascript
浅谈Javascript Base64 加密解密
2014/12/28 Javascript
jQuery检测鼠标左键和右键点击的方法
2015/03/17 Javascript
JS实现仿新浪微博发布内容为空时提示功能代码
2015/08/19 Javascript
深入理解js中this的用法
2016/05/28 Javascript
JavaScript必知必会(六) delete in instanceof
2016/06/08 Javascript
js实现可旋转的立方体模型
2016/10/16 Javascript
JS/jQuery判断DOM节点是否存在的简单方法
2016/11/24 Javascript
从零开始学习Node.js系列教程之设置HTTP头的方法示例
2017/04/13 Javascript
JavaScript通过改变文字透明度实现的文字闪烁效果实例
2017/04/27 Javascript
基于layui的下拉列表的数据回显方法
2019/09/24 Javascript
在antd中setFieldsValue和defaultVal的用法
2020/10/29 Javascript
python多线程用法实例详解
2015/01/15 Python
Python字符串处理实例详解
2017/05/18 Python
遗传算法之Python实现代码
2017/10/10 Python
Python爬虫包BeautifulSoup学习实例（五）
2018/06/17 Python
python使用Turtle库绘制动态钟表
2018/11/19 Python
通过python连接Linux命令行代码实例
2020/02/18 Python
call在Python中改进数列的实例讲解
2020/12/09 Python
浅谈amaze-ui中datepicker和datetimepicker注意的几点
2020/08/21 HTML / CSS
6PM官网：折扣鞋、服装及配饰
2018/08/03 全球购物
高中毕业自我鉴定
2013/12/22 职场文书
彩色的非洲教学反思
2014/02/18 职场文书
环保建议书作文
2014/03/12 职场文书
党性心得体会
2014/09/03 职场文书
2015年公司行政后勤工作总结
2015/05/20 职场文书
领导视察通讯稿
2015/07/18 职场文书
关于食品安全的演讲稿范文（三篇）
2019/10/21 职场文书
Pytorch使用shuffle打乱数据的操作
2021/05/20 Python
java调用Restful接口的三种方法
2021/08/23 Java/Android
Java实现添加条码或二维码到Word文档
2022/06/01 Java/Android