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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>轮播图</title>
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</head>
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<body>
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<div style="display: flex;flex-direction: row; justify-content: center; align-items: center;">
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<div id="up">
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《《
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</div>
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<img src="./img/p1.jpg" style="height: 400px; width: 600px;margin: 0px 40px 0px 40px;" id="imgDom">
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<div id="down">
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》》
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</div>
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</div>
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<div id="imgButton" style="display: flex;flex-direction: row; justify-content: center; margin-top: 20px;">
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</div>
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</body>
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<style>
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/* 空心圆 */
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.classButton {
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width: 20px;
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height: 20px;
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border-radius: 50%;
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border: 2px solid;
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margin: 0px 10px 0px 10px ;
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background-color: pink;
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border: none;
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}
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.active {
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border: solid;
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border-color: skyblue;
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background-color: #fff;
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}
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</style>
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<script type="text/javaScript" src="./jquery-3.7.1.min.js"></script>
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<script>
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const imgArr = [
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{
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id: 1,
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img: "./p1.jpg"
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},
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{
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id: 2,
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img: "./p2.jpg"
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},
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{
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id: 3,
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img: "./p3.jpg"
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},
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{
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id: 4,
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img: "./p4.jpg"
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}
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]
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let index = 0
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let imgDom = $("#imgDom")
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let imgDiv = $("#imgButton")
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let upImg = $("#up")
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let downImg = $("#down")
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for (let i = 0; i < imgArr.length; i++) {
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imgDiv.append($('<div class="classButton"></div>'))
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}
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let imgButtons = $("#imgButton > div")
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upImg.on("click",function() {
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if (index <= 0) {
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index = imgArr.length - 1
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} else {
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index--
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}
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imgButtons.removeClass('active')
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imgButtons.eq(index).addClass('active')
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imgDom.attr("src", imgArr[index].img)
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})
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downImg.click(() => {
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console.log(index)
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if (index >= imgArr.length - 1) {
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index = 0
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} else {
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index++
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}
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imgButtons.removeClass('active')
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imgButtons.eq(index).addClass('active')
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imgDom.attr("src", imgArr[index].img)
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})
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for(let i=0;i<imgArr.length;i++){
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imgButtons.eq(i).attr("value",i)
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}
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imgButtons.on("click",function(){
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index = $(this).attr('value')
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console.log(index)
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imgDom.attr("src", imgArr[index].img)
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imgButtons.removeClass('active')
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$(this).addClass('active')
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})
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</script>
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</html>
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