JavaScript implements seamless scrolling effect of carousel images
This article mainly introduces the seamless scrolling effect of js carousel chart in detail, which has a certain reference value. Interested friends can refer to it
How to start and end the carousel chart when making it If they cannot be connected, the effect will be a bit ugly. Here is a method I commonly use:
Let me explain in words first:
If you want to display 5 pictures, they are 1, 2, and 3. ,4,5 So the introduction of the code is like this: 1,2,3,4,5,1
I won’t go into detail here about the sequential rotation. The main point is 5>1 and 1>5 carousel
i represents the index of the current picture
pre represents the button of the previous picture
next represents the button of the next picture
ul represents the picture list
(1) 5>1>2... When the "next" button goes from 5 to 1, it rotates normally in order, and when the current picture is the second "1" , the next picture should be "2", then when "next", the left value of ul is 0, i==1;
(2) 1>5>4.... When When the "pre" button rotates from the current picture "1" (the first 1) to picture 5, i==4, the left value of ul becomes -5 times the width of img, that is, the first 1 is quietly Becomes the last 1;
It’s a bit confusing to express it in language, so let’s put the code below:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <style type="text/css"> *{padding: 0;margin: 0;} .container{ width: 273px;height: 163px;overflow: hidden; position: relative;margin: 0 auto; } .list{ position: absolute;width: 1638px;top: 0;left: 0px; } .list li{ float: left;list-style: none; } .btn{ position: absolute;display: block;width: 40px;height: 50px;font-size: 40px; text-align: center;font-weight: bold;top: 50%;margin-top: -25px;background-color: rgba(255,255,255,0.5);cursor:pointer; } .btn:hover{ background-color: rgba(0,0,0,0.3);color: #fff; } .pre{ left: 0; } .next{ right: 0; } .nav{ position: absolute;bottom: 5px;display: flex;justify-content: center;width: 100%; } .nav span{ width: 10px;height: 10px;border-radius: 10px;background-color: #fff;z-index: 2;display: inline-block;margin-right: 10px;cursor: pointer; } span.on{ background-color: orange; } </style> </head> <body> <p class="container"> <ul class="list" style="left: 0px"> <li><img src="/static/imghwm/default1.png" data-src="./images/1.png" class="lazy" alt=""></li> <li><img src="/static/imghwm/default1.png" data-src="./images/2.png" class="lazy" alt=""></li> <li><img src="/static/imghwm/default1.png" data-src="./images/3.png" class="lazy" alt=""></li> <li><img src="/static/imghwm/default1.png" data-src="./images/4.png" class="lazy" alt=""></li> <li><img src="/static/imghwm/default1.png" data-src="./images/5.png" class="lazy" alt=""></li> <li><img src="/static/imghwm/default1.png" data-src="./images/1.png" class="lazy" alt=""></li> </ul> <p class="nav"> <span class="on"></span> <span></span> <span></span> <span></span> <span></span> </p> <em class="next btn">></em> <em class="pre btn"><</em> </p> <script type="text/javascript" src="../jquery.js"></script> <script type="text/javascript"> $(function(){ var i=0; $('.next').click(function(){ i++; console.log(i); moveImg(i); }); $('.pre').click(function(){ i--; moveImg(i); }); $('.nav span').click(function(){ var _index=$(this).index(); i=_index; moveImg(i); }); // i的作用:决定下一张图片是谁————也就是说ul的left是多少。 // $('.list').css({left)的值是从图a过度是此时的ul的left。 function moveImg(){ if (i==6) { i=1; $('.list').css({'left':'0'}); } // 是第一张 if(i==-1){ i=4; $('ul').css({left:(5*-273)}); } $('.list').stop().animate({'left':-273*i+'px'},1000); if (i==5) { $('.nav span').eq(0).addClass('on').siblings().removeClass('on'); } $('.nav span').eq(i).addClass('on').siblings().removeClass('on'); } }) </script> </body> </html>
The above is the entire content of this article. I hope it will be helpful to everyone’s study, and I hope you can support me a lot. Script House.
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