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小編這次要給大家分享的是詳解js如何實現輪播圖特效，文章內容豐富，感興趣的小伙伴可以來了解一下，希望大家閱讀完這篇文章之后能夠有所收獲。
本文實例為大家分享了js實現輪播圖特效的具體代碼，供大家參考，具體內容如下
只需要修改圖片的src即可
html:
<body> <div id="rollImgBox"> <div class="photos clearfix"> <!--輪播圖里面首位多放最后一張與第一張圖片，以便順暢平滑切換--> <div class="move"><img src="img/timg%20(7).jpg" alt=""></div> <div class="move"><img src="img/timg%20(4).jpg" alt=""></div> <div class="move"><img src="img/timg%20(5).jpg" alt=""></div> <div class="move"><img src="img/timg%20(6).jpg" alt=""></div> <div class="move"><img src="img/timg%20(7).jpg" alt=""></div> <div class="move"><img src="img/timg%20(4).jpg" alt=""></div> </div> <!--points圓點導航,js動態生成--> <div class="points"></div> <!--如果需要向左與向右的按鍵，引入方向圖片--> <span class="leftPoint"> < </span> <span class="rightPoint"> > </span> </div> </body>
style:
*{
margin: 0;
padding: 0;
}
.clearfix{
zoom: 1;
}
.clearfix:after{
content: "";
display: block;
height: 0;
visibility: hidden;
clear: both;
}
#rollImgBox{
/*這里讓盒子居中，應用到具體頁面刪除即可*/
margin: 20px auto;
/*如果該輪播圖不是獨占一行，需要將其改為行內塊元素*/
display: block;
position: relative;
/*在這里設置裝載圖片的框框的寬高*/
width: 947px;
height: 585px;
/*在這里設置邊框的樣式用outline，這樣就不會影響到后面的js了
/*加邊框，用outline即可，不會影響實際的距離*/
outline: 5px solid blue;
overflow: hidden;
}
#rollImgBox .photos .move img{
/*在這里設置圖片的寬高，與邊框的寬高相同*/
width: 947px;
height: 585px;
}
#rollImgBox .photos{
position: relative;
/*移動的是圖片的寬度,左移947px*/
left: -947px;
}
#rollImgBox:hover{
cursor: pointer;
}
#rollImgBox .photos div{
float: left;
}
#rollImgBox .points{
position: absolute;
/*在這里修改圓點導航的位置*/
bottom: 30px;
right: 170px;/*右下方*/
text-align: center;
}
#rollImgBox .points span{
display: inline-block;
/*在這里可以更改圓點的大小*/
text-align: center;
line-height: 66px;
font-size: 24px;
font-family: 微軟雅黑;
width: 66px;
height: 66px;
background: rgba(112,117,112,.6);
border-radius: 50%;
margin-left: 15px;
}
#rollImgBox .points .pointsNow{
background: rgba(62,255,49,.6);
}
/*左右按鈕*/
#rollImgBox .leftPoint{
width: 60px;
height: 60px;
background: rgba(0,0,0,.5);
text-align: center;
line-height: 60px;
position: absolute;
font-size: 30px;
color: white;
top: 290px;
left: 0;
}
#rollImgBox .rightPoint{
width: 60px;
height: 60px;
background: rgba(0,0,0,.5);
text-align: center;
line-height: 60px;
position: absolute;
font-size: 30px;
color: white;
top: 290px;
right: 0;
}
#rollImgBox .leftPoint:hover{
background: rgba(255,0,0,.5);
}
#rollImgBox .rightPoint:hover{
background: rgba(255,0,0,.5);
}script:
window.onload = function(){
let rollImgBox = document.querySelector("#rollImgBox");
let photos = document.querySelector("#rollImgBox .photos");
let allimg = document.querySelectorAll("#rollImgBox .move img");
let index = 2;
//動態設計移動圖片的框框寬高
//(rollImgBox.offsetWidth)是要剪去邊框的寬度
photos.style.width = (allimg.length)*(rollImgBox.offsetWidth) + "px";
photos.style.height = rollImgBox.offsetHeight + "px";
//動態創建小圓點
let point = new Array();
let points = document.querySelector("#rollImgBox .points");
for (let i=0;i<(allimg.length-2);i++){
point[i] = document.createElement("span");
point[i].innerHTML = (i+1);
points.appendChild(point[i]);
}
point[0].className = "pointsNow";
let rollImgIterval = setInterval(function () {
//圖片的輪播
if (index === allimg.length){
photos.style.left = 0;
index = 1;
photos.style.transition = "0s";
point[0].className = "pointsNow";
} else {
photos.style.transition = "1.5s";
}
photos.style.left = -(rollImgBox.offsetWidth)*index + "px";
index++;
//小圓點的變換
for (let j=0;j<(allimg.length-2);j++){
if (j === index-2){
point[j].className = "pointsNow";
} else {
point[j].className = "";
}
}
//這里是最后一張圖片（與展現的第一張一樣的圖）設置小圓點樣式
if (index === allimg.length){
point[0].className = "pointsNow";
}
},2000);
//當用戶把鼠標放到rollImgBox盒子中，需要查看圖片，自動輪播停止
rollImgBox.onmouseover = function () {
clearInterval(rollImgIterval);
};
rollImgBox.onmouseout = function () {
rollImgIterval = setInterval(function () {
//圖片的輪播
if (index === allimg.length){
photos.style.left = 0;
index = 1;
photos.style.transition = "0s";
point[0].className = "pointsNow";
} else {
photos.style.transition = "1.5s";
}
photos.style.left = -(rollImgBox.offsetWidth)*index + "px";
index++;
//小圓點的變換
for (let j=0;j<(allimg.length-2);j++){
if (j === index-2){
point[j].className = "pointsNow";
} else {
point[j].className = "";
}
}
//這里是最后一張圖片（與展現的第一張一樣的圖）設置小圓點樣式
if (index === allimg.length){
point[0].className = "pointsNow";
}
},2000);
};
//點擊小圓點，跳轉到對應的圖片位置
for (let k=0;k<(allimg.length-2);k++){
point[k].onmousedown = function () {
photos.style.left = -(rollImgBox.offsetWidth)*(k+1) + "px";
//小圓點的變換
for (let j=0;j<(allimg.length-2);j++){
if (j === k){
point[j].className = "pointsNow";
} else {
point[j].className = "";
}
}
//點擊小圓點之后更改index的值
index = k+2;
}
}
//點擊左右方向鍵，對圖片進行滑動
let leftPoint = document.querySelector('#rollImgBox .leftPoint');
let rightPoint = document.querySelector('#rollImgBox .rightPoint');
leftPoint.onclick = function () {
photos.style.transition = "1s";
//向左滑動一張圖片，并修改index的值（index--）
let dis = index-2;
//當dis為1時，圓點到達第一個位置，如果再往左移動一個，圓點應該到達最后一個位置
if (dis < 1){
dis = allimg.length-2;
photos.style.left = 0;
point[dis-1].className = "pointsNow";
point[0].className = "";
index = allimg.length;
} else {
photos.style.left = -(rollImgBox.offsetWidth)*dis + "px";
point[dis-1].className = "pointsNow";
point[dis].className = "";
}
//從第一張順滑切換到最后一張
setTimeout(function () {
if (photos.style.left === '0px'){
photos.style.left = -(rollImgBox.offsetWidth)*(allimg.length-2) + "px";
photos.style.transition = '0s';
index = allimg.length-1;
}
},1000);
index--;
};
rightPoint.onclick = function () {
photos.style.transition = "1s";
//向右滑動一張圖片，并修改index的值（index++）
let dis = index-1;
//當dis為5時，圓點到達最后一個位置，如果再往右移動一個，圓點應該到達第一個位置
if (dis >= (allimg.length-2)){
photos.style.left = -(rollImgBox.offsetWidth)*(allimg.length-1) + "px";
point[0].className = "pointsNow";
point[allimg.length-3].className = "";
index = 1;
} else {
photos.style.left = -(rollImgBox.offsetWidth)*index + "px";
point[dis].className = "pointsNow";
point[dis-1].className = "";
}
//從最后一張順滑切換到第一張
setTimeout(function () {
if (photos.style.left === ((-(rollImgBox.offsetWidth)*(allimg.length-1))+'px')){
photos.style.left = -(rollImgBox.offsetWidth) + "px";
photos.style.transition = '0s';
index = 2;
}
},1000);
index++;
};
};看完這篇關于詳解js如何實現輪播圖特效的文章，如果覺得文章內容寫得不錯的話，可以把它分享出去給更多人看到。
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