原生JS轮播图插件


Posted in Javascript onFebruary 09, 2017

代码分两个部分:1、HTML部分,根据注释处理即可;2、play.js插件部分,引到HTML里面即可。

1、HTML部分:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title></title>
  <style>/*style标签及其内的内容,在实际项目中可以不要*/
    * {
      margin: 0;
      padding: 0;
    }
  </style>
</head>
<body>
<!--body标签里的内容,没说可以增减或更改的,不要增减或更改-->
<div id="box">
  <div>
    <!--以下是可增减区域-->
    <div><img src="img/banner1.jpg" alt=""/></div>
    <div><img src="img/banner2.jpg" alt=""/></div>
    <div><img src="img/banner3.jpg" alt=""/></div>
    <div><img src="img/banner4.jpg" alt=""/></div>
    <div><img src="img/banner5.jpg" alt=""/></div>
    <div><img src="img/banner6.jpg" alt=""/></div>
    <div><img src="img/banner7.jpg" alt=""/></div>
    <!--以上是可增减区域-->
  </div>
</div>
<script src="play.js"></script>
<script>
  var play= new Banner('1000px', '500px');
  /*这两个参数分别是轮播区的宽和高,可以根据需要更改*/
</script>
</body>
</html>

2、play.js插件部分

function Banner(width, height) {/*类*/
  /*以下最外层div*/
  var that = this;
  this.width = width;
  this.height = height;
  this.oBox = document.getElementById("box");
  this.oBox.style.width = width;
  this.oBox.style.height = height;
  this.oBox.style.margin = "0 auto";
  this.oBox.style.overflow = "hidden";
  this.oBox.style.position = "relative";
  /*以下轮播区的div*/
  this.oBoxInner = this.oBox.getElementsByTagName('div')[0];
  this.oBoxInner.style.height = height;
  this.oBoxInner.style.position = "absolute";
  this.oBoxInner.style.left = 0;
  this.oBoxInner.style.right = 0;
  this.aDiv = this.oBoxInner.getElementsByTagName('div');//单个轮播图
  this.oBoxInner.innerHTML/* 轮播区的内部后面*/ += this.aDiv[0].outerHTML/*第一个轮播图片的外部*/;
  this.oBoxInner.style.width = parseFloat(width) * this.aDiv.length + "px";//轮播区的宽度
  for (var i = 0; i < this.aDiv.length; i++) {/*遍历轮播区的每个div及其内部的图片*/
    this.aDiv[i].style.width = width;
    this.aDiv[i].style.height = height;
    this.aDiv[i].style.float = "left";
    this.aDiv[i].aImg = this.aDiv[i].getElementsByTagName('img')[0];
    this.aDiv[i].aImg.style.width = "100%";
    this.aDiv[i].aImg.style.height = "100%";
  }
  /*以下是焦点区部分(定位在轮播区的右下方)*/
  var oUl=document.createElement('ul');
  for(i=0; i<this.aDiv.length-1; i++){
    oUl.innerHTML+='<li class='+i+'===1?"on":null></li>';
  }
  this.oBox.appendChild(oUl);
  this.oUl = this.oBox.getElementsByTagName('ul')[0];
  this.oUl.style.position = "absolute";
  this.oUl.style.right = "10px";
  this.oUl.style.bottom = "10px";
  this.aLi = this.oUl.getElementsByTagName('li');
  for (i = 0; i < this.aLi.length; i++) {/*遍历焦点区的每个焦点*/
    this.aLi[i].style.width = "18px";
    this.aLi[i].style.height = "18px";
    this.aLi[i].style.float = "left";
    this.aLi[i].style.listStyle = "none";
    this.aLi[i].style.background = "green";
    this.aLi[i].style.borderRadius = "50%";
    this.aLi[i].style.marginLeft = "10px";
    this.aLi[i].style.cursor = "pointer";
  }
  /*以下是向左向右两个箭头式按钮*/
  for(i=0; i<2; i++){
    var oA=document.createElement('a');
    oA.href="javascript:;" rel="external nofollow" 
    this.oBox.appendChild(oA);
  }
  /*以下是左按钮(点击它,图片向左运动)*/
  this.oBtnL = this.oBox.getElementsByTagName('a')[0];
  this.oBtnL.style.width = "30px";
  this.oBtnL.style.height = "30px";
  this.oBtnL.style.position = "absolute";
  this.oBtnL.style.top = (parseFloat(this.height) / 2 - 15) + "px";
  this.oBtnL.style.left = "30px";
  this.oBtnL.style.border = "10px solid red";
  this.oBtnL.style.borderLeft = "none";
  this.oBtnL.style.borderBottom = "none";
  this.oBtnL.style.opacity = "0.3";
  this.oBtnL.style.filter = "alpha(opacity=30)";
  this.oBtnL.style.display = "none";
  this.oBtnL.style.transform = "rotate(-135deg)";
  this.oBtnL.onclick = function () {
    if (that.step <= 0) {
      that.step = that.aDiv.length - 1;
      that.css(that.oBoxInner, 'left', -that.step * parseFloat(that.width));
    }
    that.step--;
    that.animate(that.oBoxInner, {left: -that.step * parseFloat(that.width)});
    that.bannerTip();
  };
  /*以下是右按钮(点击它,图片向右运动)*/
  this.oBtnR = this.oBox.getElementsByTagName('a')[1];
  this.oBtnR.style.width = "30px";
  this.oBtnR.style.height = "30px";
  this.oBtnR.style.position = "absolute";
  this.oBtnR.style.top = (parseFloat(this.height) / 2 - 15) + "px";
  this.oBtnR.style.right = "30px";
  this.oBtnR.style.border = "10px solid red";
  this.oBtnR.style.borderLeft = "none";
  this.oBtnR.style.borderBottom = "none";
  this.oBtnR.style.opacity = "0.3";
  this.oBtnR.style.filter = "alpha(opacity=30)";
  this.oBtnR.style.display = "none";
  this.oBtnR.style.transform = "rotate(45deg)";
  this.oBtnR.onclick = function () {
    if (that.step >= that.aDiv.length - 1) {
      that.step = 0;
      that.css(that.oBoxInner, 'left', 0)
    }
    that.step++;
    that.animate(that.oBoxInner, {left: -that.step * parseFloat(that.width)}, 1000);
    that.bannerTip();
  };
  /*以下是其它*/
  this.step = 0;//记录每次运动
  this.timer = null;//定时器
  this.init();//初始化轮播图
}
Banner.prototype = {//类的原型
  constructor: Banner,
  /*getCss:获取元素的属性值*/
  getCss: function (curEle, attr) {
    var val = null;
    var reg = null;
    if (getComputedStyle) {//标准浏览器
      val = getComputedStyle(curEle, false)[attr];
    } else {//非标准浏览器
      if (attr === 'opacity') {
        val = curEle.currentStyle.filter; //'alpha(opacity=10)'
        reg = /^alpha\(opacity[=:](\d+)\)$/i;
        return reg.test(val) ? reg.exec(val)[1] / 100 : 1;
      }
      val = curEle.currentStyle[attr];
    }
    reg = /^[+-]?((\d|([1-9]\d+))(\.\d+)?)(px|pt|rem|em)$/i;
    return reg.test(val) ? parseInt(val) : val;
  },
  /*setCss:设置元素的属性值*/
  setCss: function (curEle, attr, value) {
    if (attr === 'float') {
      curEle.style.cssFloat = value;
      curEle.style.styleFloat = value;
      return;
    }
    if (attr === 'opacity') {
      curEle.style.opacity = value;
      curEle.style.filter = 'alpha(opacity=' + (value * 100) + ')';
      return;
    }
    var reg = /^(width|height|top|right|bottom|left|((margin|padding)(top|right|bottom|left)?))$/i;
    if (reg.test(attr)) {
      if (!(value === 'auto' || value.toString().indexOf('%') !== -1)) {
        value = parseFloat(value) + 'px';
      }
    }
    curEle.style[attr] = value;
  },
  /*setGroupCss:设置元素的一组属性值*/
  setGroupCss: function (curEle, options) {
    if (options.toString() !== '[object Object]') return;
    for (var attr in options) {
      this.setCss(curEle, attr, options[attr]);
    }
  },
  /*css:getCss、setCss、setGroupCss的合写*/
  css: function () {
    if (typeof arguments[1] === 'string') {
      if (typeof arguments[2] === 'undefined') {
        return this.getCss(arguments[0], arguments[1]);//当第三个参数不存在,是获取;
      } else {
        this.setCss(arguments[0], arguments[1], arguments[2]);//当第三个参数存在时,是设置;
      }
    }
    if (arguments[1].toString() === '[object Object]') {
      this.setGroupCss(arguments[0], arguments[1]);//设置元素的一组属性值
    }
  },
  /*animate:轮播图动画函数*/
  animate: function (curEle, target, duration) {
    /*1.定义动画的运行轨迹*/
    function tmpEffect(t, b, c, d) {
      return b + c / d * t;//开始时的位置+总变化/总时间*已经过去的时间
    }
    /*2.为公式的每个参数做准备*/
    var begin = {};
    var change = {};
    for (var attr in target) {
      begin[attr] = this.css(curEle, attr);
      change[attr] = target[attr] - begin[attr];
    }
    duration = duration || 700;
    var time = 0;
    var that = this;
    /*3.开启一个定时器,让时间不断累加;根据时间和公式,求出最新的位置;*/
    clearInterval(curEle.timer); //开起一个定时器前,先关闭没用的定时器
    curEle.timer = setInterval(function () {
      time += 10;
      /*4.定时器停止运动的条件(time>=duration)*/
      if (time >= duration) {
        that.css(curEle, target);
        clearInterval(curEle.timer);
        return;
      }
      /*5.拿到每个属性的最新值,并且赋值给元素对应的属性;*/
      for (var attr in target) {
        var curPos = tmpEffect(time, begin[attr], change[attr], duration);
        that.css(curEle, attr, curPos);
      }
    }, 10)
  },
  /*初始化轮播图*/
  init: function () {
    var _this = this;
    /*1.开启自动轮播*/
    this.timer = setInterval(function () {
      _this.autoMove();
    }, 2000);
    /*2.开启焦点,每个焦点与每张轮播图对应*/
    this.bannerTip();
    /*3.鼠标移入轮播区,轮播暂停;鼠标移出轮播区,轮播恢复*/
    this.over_out();
    /*4.点击焦点,响应对应的轮播图片*/
    this.handleChange();
  },
  handleChange: function () {
    for (var i = 0; i < this.aLi.length; i++) {
      this.aLi[i].index = i;
      var that = this;
      this.aLi[i].onclick = function () {
        that.step = this.index;
        that.animate(that.oBoxInner, {left: -that.step * parseFloat(that.width)});
        that.bannerTip();
      }
    }
  },
  autoMove: function () {
    if (this.step >= this.aDiv.length - 1) {
      this.step = 0;
      this.css(this.oBoxInner, 'left', 0)
    }
    this.step++;
    this.animate(this.oBoxInner, {left: -this.step * parseFloat(this.width)}, 1000);
    this.bannerTip();
  },
  bannerTip: function () {
    var tmpStep = this.step >= this.aLi.length ? 0 : this.step;
    for (var i = 0; i < this.aLi.length; i++) {
      this.aLi[i].className = i === tmpStep ? 'on' : null;
      if (this.aLi[i].className === "on") {
        this.aLi[i].style.background = "red";
      } else {
        this.aLi[i].style.background = "green";
      }
    }
  },
  over_out: function () {
    var _this = this;
    _this.oBox.onmouseover = function () {
      clearInterval(_this.timer);
      _this.oBtnL.style.display = 'block';
      _this.oBtnR.style.display = 'block';
    };
    _this.oBox.onmouseout = function () {
      _this.timer = setInterval(function () {
        _this.autoMove()
      }, 2000);
      _this.oBtnL.style.display = 'none';
      _this.oBtnR.style.display = 'none';
    }
  }
};

以上就是本文的全部内容,希望本文的内容对大家的学习或者工作能带来一定的帮助,同时也希望多多支持三水点靠木!

Javascript 相关文章推荐
Auntion-TableSort国人写的一个javascript表格排序的东西
Nov 12 Javascript
各种常用浏览器getBoundingClientRect的解析
May 21 Javascript
jquery imgareaselect 使用利用js与程序结合实现图片剪切
Jul 30 Javascript
JavaScript初学者需要了解10个小技巧
Aug 25 Javascript
jQuery示例收集
Nov 05 Javascript
使用JavaScript进行进制转换将字符串转换为十进制
Sep 21 Javascript
node.js中的fs.renameSync方法使用说明
Dec 16 Javascript
js实现禁止中文输入的方法
Jan 14 Javascript
vue2.X组件学习心得(新手必看篇)
Jul 05 Javascript
基于react组件之间的参数传递(详解)
Sep 05 Javascript
js html实现计算器功能
Nov 13 Javascript
微信小程序如何使用canvas二维码保存至手机相册
Jul 15 Javascript
jQuery页面弹出框实现文件上传
Feb 09 #Javascript
如何在Angular2中使用jQuery及其插件的方法
Feb 09 #Javascript
详解angular2采用自定义指令(Directive)方式加载jquery插件
Feb 09 #Javascript
vue-router跳转页面的方法
Feb 09 #Javascript
基于JavaScript实现复选框的全选和取消全选
Feb 09 #Javascript
jquery.cookie.js的介绍与使用方法
Feb 09 #Javascript
js 数据存储和DOM编程
Feb 09 #Javascript
You might like
PHP 命名空间实例说明
2011/01/27 PHP
PHP编程获取音频文件时长的方法【基于getid3类】
2017/04/20 PHP
PHP实现的链式队列结构示例
2017/09/15 PHP
php实现mysql连接池效果实现代码
2018/01/25 PHP
Thinkphp5.0 框架使用模型Model添加、更新、删除数据操作详解
2019/10/11 PHP
用js查找法实现当前栏目的高亮显示的代码
2007/11/24 Javascript
JS event使用方法详解
2008/04/28 Javascript
网页编辑器ckeditor和ckfinder配置步骤分享
2012/05/24 Javascript
关于jquery ajax 调用带参数的webservice返回XML数据一个小细节
2012/07/31 Javascript
Javascript 按位与运算符 (&amp;)使用介绍
2014/02/04 Javascript
JS函数arguments数组获得实际传参数个数的实现方法
2016/05/28 Javascript
jQuery插件FusionWidgets实现的AngularGauge图效果示例【附demo源码】
2017/03/23 jQuery
vue做网页开场视频的实例代码
2017/10/20 Javascript
详解Vue组件实现tips的总结
2017/11/01 Javascript
jQuery实现判断上传图片类型和大小的方法示例
2018/04/11 jQuery
在axios中使用params传参的时候传入数组的方法
2018/09/25 Javascript
解决axios会发送两次请求,有个OPTIONS请求的问题
2018/10/25 Javascript
跟老齐学Python之玩转字符串(2)
2014/09/14 Python
Python使用PIL模块生成随机验证码
2017/11/21 Python
Python编程产生非均匀随机数的几种方法代码分享
2017/12/13 Python
Python入门学习指南分享
2018/04/11 Python
pycharm debug功能实现跳到循环末尾的方法
2018/11/29 Python
Python闭包思想与用法浅析
2018/12/27 Python
Python 实现王者荣耀中的敏感词过滤示例
2019/01/21 Python
浅析PyTorch中nn.Linear的使用
2019/08/18 Python
Python读取csv文件实例解析
2019/12/30 Python
在matplotlib中改变figure的布局和大小实例
2020/04/23 Python
Currentbody德国站:健康与美容技术专家
2020/04/05 全球购物
瑞士男士时尚网上商店:Babista
2020/05/14 全球购物
会计毕业生自我鉴定
2013/11/04 职场文书
司马光教学反思
2014/02/01 职场文书
伦敦奥运会的口号
2014/06/21 职场文书
银行职员工作失误检讨书
2014/10/14 职场文书
具结保证书范本
2015/05/11 职场文书
本科毕业答辩开场白
2015/05/27 职场文书
DE1103使用报告
2022/04/05 无线电