首先把你的div设置style为overflow hidden
然后在div里面再添加一个div,假设叫做imgcontainer,在里面存放所有图片,图片以float: left方式显示,每个图片的宽度你是知道的,这样图片的个数*每个图片的宽度(必要的话再加上图片之间的间隔)设置为imgcontainer的总宽度。然后把div的宽度设置为显示3个图片的宽度。这样就可以保证只显示3个图片,多余的图片看不到。
然后在点击左右2个按钮的时候添加事件,每点击一次,让imgcontainer的marginLeft增加或减少一个图片的宽度(同样必要的时候加上图片之间的间隔距离),这样就使得图片列表在左右移动了。
下面是我的一个例子,跟你的需求可能不完全一样,大概做下参考:
HTML片段
<div id="pagecontent" class="pagecontent"><div id="nav_thumbs_prev" class="disabled" onclick="NavThumbsPrev()"></div>
<div id="photolist_container">
<ol id="photolist" class="photolist">
<li><figure onclick="ViewPhoto(this,'aaaaa')"><div class="samplecontainer"><img src="./img/singularity.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">aaaaa</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'bbbbb')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">bbbbb</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'cccc')"><div class="samplecontainer"><img src="./img/newborn.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">cccc</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'dddd')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">dddd</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'eeee')"><div class="samplecontainer"><img src="./img/singularity.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">eeee</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'ffff')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">ffff</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'gggg')"><div class="samplecontainer"><img src="./img/newborn.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">gggg</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'hhhh')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">hhhh</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'iiii')"><div class="samplecontainer"><img src="./img/newborn.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">iiii</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'jjjj')"><div class="samplecontainer"><img src="./img/singularity.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">jjjj</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'kkkk')"><div class="samplecontainer"><img src="./img/newborn.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">kkkk</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'llll')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">llll</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'mmmm')"><div class="samplecontainer"><img src="./img/singularity.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">mmmm</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'nnnn')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">nnnn</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'oooo')"><div class="samplecontainer"><img src="./img/singularity.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">oooo</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'pppp')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">pppp</figcaption></figure></li>
</ol>
</div>
<div id="nav_thumbs_next" onclick="NavThumbsNext()"></div>
</div>
CSS部分
.photolist_container {margin: 0
/*Firefox*/
width: -moz-calc(100% - 30px)
/*chrome safari*/
width: -webkit-calc(100% - 30px)
/*Standard */
width: calc(100% - 30px)
float: left
height: 140px
overflow: hidden
}
ol.photolist {
background-color: black
margin: 0
margin-left: 1px
padding: 0
list-style: none
height: auto
padding: 0
display: block
height: 125px
}
ol.photolist>li {
margin: 0
margin-left: -1px
padding: 4px
text-align:center
display:inline
float: left
border: 1px solid #FF6699
width: 100px
}
#photolist figure {
margin: 0
padding: 0
text-align:center
border: 1px solid #000000
cursor: pointer
}
.samplecontainer {
height: 100px
width: 100px
text-align: center
margin: 0
padding: 0
border: 0
display: table-cell
vertical-align: middle
}
.samplecontainer>img {
margin: 0
padding: 0
border: 0
vertical-align:middle
}
Javascript部分
function MovePhotoList(size) {var photolist = document.getElementById("photolist")
var marginLeft = 1
if (photolist.style.marginLeft != "")
marginLeft = parseInt(photolist.style.marginLeft)
marginLeft = marginLeft + size
if (marginLeft <(document.getElementById("photolist_container").offsetWidth - photolist.offsetWidth))
{
marginLeft = document.getElementById("photolist_container").offsetWidth - photolist.offsetWidth
document.getElementById("nav_thumbs_next").setAttribute("class", "disabled")
}
else
{
document.getElementById("nav_thumbs_next").setAttribute("class", "enable")
}
if (marginLeft >1)
{
marginLeft = 1
document.getElementById("nav_thumbs_prev").setAttribute("class", "disabled")
}
else
{
document.getElementById("nav_thumbs_prev").setAttribute("class", "enable")
}
photolist.style.marginLeft = marginLeft + "px"
}
function NavThumbsPrev() {
var nav_thumbs_prev = document.getElementById("nav_thumbs_prev")
if (nav_thumbs_prev.getAttribute("class") != "disabled") {
MovePhotoList(56)
}
}
function NavThumbsNext() {
var nav_thumbs_next = document.getElementById("nav_thumbs_next")
if (nav_thumbs_next.getAttribute("class") != "disabled") {
MovePhotoList(-56)
}
}
ie浏览器中有自带的切换效果可供调用;其它浏览器的话得自己写程序定位,如淡入淡出可以利用设置css的opacity属性实现;
百叶窗可以利用程序生成N个div,每个div的背景图为你要加载的图,然后设置好每个div的位置即可
HTML5 DOM 选择器// querySelector() 返回匹配到的第一个元素var item = document.querySelector('.item')console.log(item)// querySelectorAll() 返回匹配到的所有元素,是一个nodeList集合var items = document.querySelectorAll('.item')console.log(items[0])1234567
阻止默认行为
// 原生jsdocument.getElementById('btn').addEventListener('click', function (event) {event = event || window.event;if (event.preventDefault){// w3c方法 阻止默认行为
event.preventDefault()
} else{// ie 阻止默认行为
event.returnValue = false
}
}, false)// jQuery$('#btn').on('click', function (event) {event.preventDefault()
})1234567891011121314151617
阻止冒泡
// 原生jsdocument.getElementById('btn').addEventListener('click', function (event) {event = event || window.event;if (event.stopPropagation){// w3c方法 阻止冒泡
event.stopPropagation()
} else{// ie 阻止冒泡
event.cancelBubble = true
}
}, false)// jQuery$('#btn').on('click', function (event) {event.stopPropagation()
})1234567891011121314151617
鼠标滚轮事件
$('#content').on("mousewheel DOMMouseScroll", function (event) {
// chrome &ie || // firefox
var delta = (event.originalEvent.wheelDelta &&(event.originalEvent.wheelDelta >0 ? 1 : -1)) || (event.originalEvent.detail &&(event.originalEvent.detail >0 ? -1 : 1))
if (delta >0) {
// 向上滚动
console.log('mousewheel top')
} else if (delta <0) {// 向下滚动
console.log('mousewheel bottom')
}
})123456789101112
检测浏览器是否支持svg
function isSupportSVG() {
var SVG_NS = 'http://www.w3.org/2000/svg' return !!document.createElementNS &&!!document.createElementNS(SVG_NS, 'svg').createSVGRect
}
// 测试console.log(isSupportSVG())1234567
检测浏览器是否支持canvas
function isSupportCanvas() {
if(document.createElement('canvas').getContext){return true
}else{return false
}
}// 测试,打开谷歌浏览器控制台查看结果console.log(isSupportCanvas())12345678910
检测是否是微信浏览器
function isWeiXinClient() {
var ua = navigator.userAgent.toLowerCase()
if (ua.match(/MicroMessenger/i)=="micromessenger") {
return true
} else {
return false
}
}// 测试alert(isWeiXinClient())1234567891011
jQuery 获取鼠标在图片上的坐标
$('#myImage').click(function(event){
//获取鼠标在图片上的坐标
console.log('X:' + event.offsetX+'\n Y:' + event.offsetY)
//获取元素相对于页面的坐标
console.log('X:'+$(this).offset().left+'\n Y:'+$(this).offset().top)
})1234567
验证码倒计时代码
<!-- dom --><input id="send" type="button" value="发送验证码">12
// 原生js版本var times = 60, // 临时设为60秒
timer = null
document.getElementById('send').onclick = function () {
// 计时开始
timer = setInterval(function () {
times-- if (times <= 0) {
send.value = '发送验证码'
clearInterval(timer)
send.disabled = false
times = 60
} else {
send.value = times + '秒后重试'
send.disabled = true
}
}, 1000)
}1234567891011121314151617181920
// jQuery版本var times = 60,
timer = null
$('#send').on('click', function () {
var $this = $(this) // 计时开始
timer = setInterval(function () {
times-- if (times <= 0) {
$this.val('发送验证码')
clearInterval(timer)
$this.attr('disabled', false)
times = 60
} else {
$this.val(times + '秒后重试')
$this.attr('disabled', true)
}
}, 1000)
})12345678910111213141516171819202122
常用的一些正则表达式
//匹配字母、数字、中文字符
/^([A-Za-z0-9]|[\u4e00-\u9fa5])*$/
//验证邮箱
/^\w+@([0-9a-zA-Z]+[.])+[a-z]{2,4}$/
//验证手机号
/^1[3|5|8|7]\d{9}$/
//验证URL
/^http:\/\/.+\./
//验证身份证号码
/(^\d{15}$)|(^\d{17}([0-9]|X|x)$)/
//匹配中文字符的正则表达式
/[\u4e00-\u9fa5]/
//匹配双字节字符(包括汉字在内)
/[^\x00-\xff]/1234567891011121314151617181920
js时间戳、毫秒格式化
function formatDate(now) {
var y = now.getFullYear() var m = now.getMonth() + 1// 注意js里的月要加1
var d = now.getDate() var h = now.getHours()
var m = now.getMinutes()
var s = now.getSeconds() return y + "-" + m + "-" + d + " " + h + ":" + m + ":" + s
}
var nowDate = new Date(2016, 5, 13, 19, 18, 30, 20)
console.log(nowDate.getTime())// 获得当前毫秒数: 1465816710020console.log(formatDate(nowDate))123456789101112131415
js限定字符数(注意:一个汉字算2个字符)
<input id="txt" type="text">//字符串截取function getByteVal(val, max) {
var returnValue = '' var byteValLen = 0 for (var i = 0i <val.lengthi++) {if (val[i].match(/[^\x00-\xff]/ig) != null) byteValLen += 2else byteValLen += 1 if (byteValLen >max) break
returnValue += val[i]
}return returnValue
}
$('#txt').on('keyup', function () {
var val = this.value if (val.replace(/[^\x00-\xff]/g, "**").length >14) {this.value = getByteVal(val, 14)
}
})12345678910111213141516171819
js判断是否移动端及浏览器内核
var browser = {
versions: function() {
var u = navigator.userAgent
return {
trident: u.indexOf('Trident') >-1, //IE内核
presto: u.indexOf('Presto') >-1, //opera内核
webKit: u.indexOf('AppleWebKit') >-1, //苹果、谷歌内核
gecko: u.indexOf('Firefox') >-1, //火狐内核Gecko
mobile: !!u.match(/AppleWebKit.*Mobile.*/), //是否为移动终端
ios: !!u.match(/\(i[^]+( U)? CPU.+Mac OS X/), //ios
android: u.indexOf('Android') >-1 || u.indexOf('Linux') >-1, //android
iPhone: u.indexOf('iPhone') >-1 , //iPhone
iPad: u.indexOf('iPad') >-1, //iPad
webApp: u.indexOf('Safari') >-1 //Safari
}
}
}
if (browser.versions.mobile() || browser.versions.ios() || browser.versions.android() || browser.versions.iPhone() || browser.versions.iPad()) {
alert('移动端')
}123456789101112131415161718192021
之前我用过一个检测客户端的库 觉得挺好用的,也推荐给大家 叫 device.js,大家可以 Googel 或 百度
GItHub仓库地址:https://github.com/matthewhudson/device.js
getBoundingClientRect() 获取元素位置
//它返回一个对象,其中包含了left、right、top、bottom四个属性var myDiv = document.getElementById('myDiv')var x = myDiv.getBoundingClientRect().left
var y = myDiv.getBoundingClientRect().top
// 相当于jquery的: $(this).offset().left、$(this).offset().top // js的:this.offsetLeft、this.offsetTop123456
HTML5全屏
function fullscreen(element) {
if (element.requestFullscreen) {
element.requestFullscreen()
} else if (element.mozRequestFullScreen) {
element.mozRequestFullScreen()
} else if (element.webkitRequestFullscreen) {
element.webkitRequestFullscreen()
} else if (element.msRequestFullscreen) {
element.msRequestFullscreen()
}}
fullscreen(document.documentElement)12345678910111213