How does JavaScript realize the effect of broadcast picture by changing the src of the picture?

This article is about how JavaScript can achieve the effect of rowing pictures by changing the src of pictures. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Realization of Carousel Graph by Js

Realization idea

This may be one of the simplest implementations of a broadcast picture. To achieve this effect by changing the src of the picture, we first need to unify the naming format of the picture, such as pic01.jpg,pic02.jpg. And then use the timer to change the name of the src image link in the img tag through js to achieve the switching effect. The code is as follows:

Realize the effect

Width: 900px; height: 400px; margin:100px auto;} .lunbo img {width: 100%; height:100%;}

Var index = 1; function lunbo () {index+ +; / / determine whether index is greater than 3 if (index > 3) {index = 1;} / / get img object var img = document.getElementById ("lunbo_img"); img.src = ". / pic/img" + index+ ".jpeg" } / / 2. Define the timer setInterval (lunbo,2000); / * remember that calling the lunbo method in the timer cannot add (), setInterval (lunbo,2000); if you add (), the lunbo () method will be executed, causing the timer to be useless. Thank you for reading! This is the end of the article on "how JavaScript can achieve the effect of rowing pictures by changing the src of pictures". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it out for more people to see!