JavaScript Lightbox详解
本文我们为大家介绍如何使用 HTML、JavaScript 与 CSS 来创建 Lightbox，类似相册预览功能。
HTML 代码：
<!-- 图片改为你的图片地址 --> <h2 style="text-align:center">Lightbox</h2> <div class="row"><div class="column"> <img src="http://static.runoob.com/images/demo/demo1.jpg" style="width:100%" onclick="openModal();currentSlide(1)" class="hover-shadow cursor"></div><div class="column"> <img src="http://static.runoob.com/images/demo/demo2.jpg" style="width:100%" onclick="openModal();currentSlide(2)" class="hover-shadow cursor"></div><div class="column"> <img src="http://static.runoob.com/images/demo/demo3.jpg" style="width:100%" onclick="openModal();currentSlide(3)" class="hover-shadow cursor"></div><div class="column"> <img src="http://static.runoob.com/images/demo/demo4.jpg" style="width:100%" onclick="openModal();currentSlide(4)" class="hover-shadow cursor"></div> </div> <div id="myModal" class="modal"><span class="close cursor" onclick="closeModal()">×</span><div class="modal-content"> <div class="mySlides"> <div class="numbertext">1 / 4</div> <img src="http://static.runoob.com/images/demo/demo1.jpg" style="width:100%"> </div> <div class="mySlides"> <div class="numbertext">2 / 4</div> <img src="http://static.runoob.com/images/demo/demo2.jpg" style="width:100%"> </div> <div class="mySlides"> <div class="numbertext">3 / 4</div> <img src="http://static.runoob.com/images/demo/demo3.jpg" style="width:100%"> </div> <div class="mySlides"> <div class="numbertext">4 / 4</div> <img src="http://static.runoob.com/images/demo/demo4.jpg" style="width:100%"> </div> <a class="prev" onclick="plusSlides(-1)">❮</a> <a class="next" onclick="plusSlides(1)">❯</a> <div class="caption-container"> <p id="caption"></p> </div> <div class="column"> <img class="demo cursor" src="http://static.runoob.com/images/demo/demo1.jpg" style="width:100%" onclick="currentSlide(1)" alt="Nature and sunrise"> </div> <div class="column"> <img class="demo cursor" src="http://static.runoob.com/images/demo/demo2.jpg" style="width:100%" onclick="currentSlide(2)" alt="Trolltunga, Norway"> </div> <div class="column"> <img class="demo cursor" src="http://static.runoob.com/images/demo/demo3.jpg" style="width:100%" onclick="currentSlide(3)" alt="Mountains and fjords"> </div> <div class="column"> <img class="demo cursor" src="http://static.runoob.com/images/demo/demo4.jpg" style="width:100%" onclick="currentSlide(4)" alt="Northern Lights"> </div></div> </div>CSS 代码：
body {font-family: Verdana, sans-serif;margin: 0; } * {box-sizing: border-box; } .row > .column {padding: 0 8px; } .row:after {content: "";display: table;clear: both; } .column {float: left;width: 25%; } /* 弹窗背景 */ .modal {display: none;position: fixed;z-index: 1;padding-top: 100px;left: 0;top: 0;width: 100%;height: 100%;overflow: auto;background-color: black; } /* 弹窗内容 */ .modal-content {position: relative;background-color: #fefefe;margin: auto;padding: 0;width: 90%;max-width: 1200px; } /* 关闭按钮 */ .close {color: white;position: absolute;top: 10px;right: 25px;font-size: 35px;font-weight: bold; } .close:hover, .close:focus {color: #999;text-decoration: none;cursor: pointer; } .mySlides {display: none; } .cursor {cursor: pointer } /* 上一页 & 下一页 按钮 */ .prev, .next {cursor: pointer;position: absolute;top: 50%;width: auto;padding: 16px;margin-top: -50px;color: white;font-weight: bold;font-size: 20px;transition: 0.6s ease;border-radius: 0 3px 3px 0;user-select: none;-webkit-user-select: none; } /* 定位下一页按钮到右侧 */ .next {right: 0;border-radius: 3px 0 0 3px; } /* 鼠标移动上去修改背景色为黑色 */ .prev:hover, .next:hover {background-color: rgba(0, 0, 0, 0.8); } /* 页数(1/3 etc) */ .numbertext {color: #f2f2f2;font-size: 12px;padding: 8px 12px;position: absolute;top: 0; } img {margin-bottom: -4px; } .caption-container {text-align: center;background-color: black;padding: 2px 16px;color: white; } .demo {opacity: 0.6; } .active, .demo:hover {opacity: 1; } img.hover-shadow {transition: 0.3s } .hover-shadow:hover {box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19) }JavaScript 代码：
function openModal() {document.getElementById('myModal').style.display = "block"; } function closeModal() {document.getElementById('myModal').style.display = "none"; } var slideIndex = 1; showSlides(slideIndex); function plusSlides(n) {showSlides(slideIndex += n); } function currentSlide(n) {showSlides(slideIndex = n); } function showSlides(n) {var i;var slides = document.getElementsByClassName("mySlides");var dots = document.getElementsByClassName("demo");var captionText = document.getElementById("caption");if (n > slides.length) {slideIndex = 1}if (n < 1) {slideIndex = slides.length}for (i = 0; i < slides.length; i++) { slides[i].style.display = "none";}for (i = 0; i < dots.length; i++) { dots[i].className = dots[i].className.replace(" active", "");}slides[slideIndex-1].style.display = "block";dots[slideIndex-1].className += " active";captionText.innerHTML = dots[slideIndex-1].alt; }在线演示
本文为大家介绍如何实现一个搜索框的提示功能，类似百度搜索。HTML 代码：<input type="text" id="myInput" onkeyup="myFunction()" plac ...
