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javascript 幻燈片代碼(含自動播放)

源碼部分

對應的圖片地址改為自己的圖片地址：

HTML 代碼：

<div class="slideshow-container"> <div class="mySlides fade"> <div class="numbertext">1 / 3</div> <img src="img1.jpg" style="width:100%"> <div class="text">文本 1</div> </div> <div class="mySlides fade"> <div class="numbertext">2 / 3</div> <img src="img2.jpg" style="width:100%"> <div class="text">文本 2</div> </div> <div class="mySlides fade"> <div class="numbertext">3 / 3</div> <img src="img3.jpg" style="width:100%"> <div class="text">文本 3</div> </div> <a class="prev" onclick="plusSlides(-1)">?</a> <a class="next" onclick="plusSlides(1)">?</a> </div> <br> <div style="text-align:center"> <span class="dot" onclick="currentSlide(1)"></span> <span class="dot" onclick="currentSlide(2)"></span> <span class="dot" onclick="currentSlide(3)"></span> </div>

CSS 代碼設置上一張下一張圖片的按鈕及文本。

CSS 代碼：

* {box-sizing:border-box} body {font-family: Verdana,sans-serif;} .mySlides {display:none} /* 幻燈片容器 */ .slideshow-container { max-width: 1000px; position: relative; margin: auto; } /* 下一張 & 上一張 按鈕 */ .prev, .next { cursor: pointer; position: absolute; top: 50%; width: auto; margin-top: -22px; padding: 16px; color: white; font-weight: bold; font-size: 18px; transition: 0.6s ease; border-radius: 0 3px 3px 0; } /* 定位 "下一張" 按鈕靠右 */ .next { right: 0; border-radius: 3px 0 0 3px; } /* On hover, add a black background color with a little bit see-through */ .prev:hover, .next:hover { background-color: rgba(0,0,0,0.8); } /* 標題文本 */ .text { color: #f2f2f2; font-size: 15px; padding: 8px 12px; position: absolute; bottom: 8px; width: 100%; text-align: center; } /* 數(shù)字文本 (1/3 等) */ .numbertext { color: #f2f2f2; font-size: 12px; padding: 8px 12px; position: absolute; top: 0; } /* 標記符號 */ .dot { cursor:pointer; height: 13px; width: 13px; margin: 0 2px; background-color: #bbb; border-radius: 50%; display: inline-block; transition: background-color 0.6s ease; } .active, .dot:hover { background-color: #717171; } /* 淡出動畫 */ .fade { -webkit-animation-name: fade; -webkit-animation-duration: 1.5s; animation-name: fade; animation-duration: 1.5s; } @-webkit-keyframes fade { from {opacity: .4} to {opacity: 1} } @keyframes fade { from {opacity: .4} to {opacity: 1} }

JavaScript 代碼：

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("dot"); 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"; }

在線演示

你也可以將幻燈片設置為自動播放，JavaScript 代碼修改為如下：

JavaScript 代碼：

var slideIndex = 0; showSlides(); function showSlides() { var i; var slides = document.getElementsByClassName("mySlides"); var dots = document.getElementsByClassName("dot"); for (i = 0; i < slides.length; i++) { slides[i].style.display = "none"; } slideIndex++; if (slideIndex > slides.length) {slideIndex = 1} 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"; setTimeout(showSlides, 2000); // 切換時間為 2 秒 }

在線演示

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