Skip to main content

How to Create a Simple Image Slider in JavaScript?

Dear Friends,

In this Article i am going to explain about creating a simple slider in JavaScript. So let us start step by Step tutorial on How to create a simple image slider in JavaScript. Before starting this Example you should know the following topics.


If you are not clear about the above mentioned topics, I strongly suggest you to please go through the above mentioned topics first. If you know above topics, let is start the example.

Step 1:-
Create a simple HTML Template as Follows with Image element with id "myImg" in it.
<!DOCTYPE html>
<html>
<head>
    <title></title>
</head>
<body>
    <img src="" id ="myImg">
</body>
</html>

Step 2:-
Now add a simple array which contains list of objects with image name as follows.
<script type="text/JavaScript">
var images=[{name:"images/1.jpg"},{name:"images/2.jpg"},{name:"images/3.jpg"},{name:"images/4.jpg"},
{name:"images/5.jpg"},{name:"images/6.jpg"}]
var imgNo=0;
</script>


Step 3:-
Now Let us create a simple function called "startSlide" as follows.
function startSlide(){
    document.getElementById("myImg").setAttribute("src",images[imgNo].name);
        if(imgNo==5){
            imgNo=0
        }
        else{
           imgNo++;
    }
 }
When we invoke the function "startSlide" , it will access the image element with id "myImg" .At this point of time this this element is not having any value for the "src" Attribute . Now we will assign src attribute value as "images[imgNo].name". Since we have assigned a value for imgNo as 0 , it will assign the first objects name as image src .

In Result Now the first image will be appearing. After that it will come to that if condition to check the image no. If the image no is 5, it means we have reached to the last image. Since we don’t have any images after that we will assign imgNo=0. So it will reach to the first image once again.

Step 4:-

Now we have to create a function which will invoke the above startSlide in 1 sec interval. (You can change the interval as per your wish). So the no-load function will look like this.

window.onload=slide();
function slide(){
    autoSlide=setInterval(startSlide,1000);
}


Step 5:-

Now when we run, our Image sliding application is ready and running. we need to do some more things .When we mouse over on the image , sliding has to stop and when we mouse out , sliding has to start once again . To od that we need to add the following code.

document.getElementById("myImg").onmouseover=function (){
            clearInterval(autoSlide)
        }

        document.getElementById("myImg").onmouseout=function (){
            slide()
        }

So here is final Code Look Like:

<!DOCTYPE html>
<html>
<head>
    <title></title>
    <style type="text/css">
        img#myImg {
    width: 900px;
    height: 600px;
}
    </style>
</head>
<body>
    <img src="" id="myImg">
    <script type="text/javascript">
    var autoSlide;
        var images=[{name:"images/1.jpg"},{name:"images/2.jpg"},{name:"images/3.jpg"},{name:"images/4.jpg"},{name:"images/5.jpg"},{name:"images/6.jpg"}]
        window.onload=slide();
        function slide(){
            autoSlide=setInterval(startSlide,1000)
        }
        var imgNo=0;
        function startSlide(){
            document.getElementById("myImg").setAttribute("src",images[imgNo].name);
            if(imgNo==5){
                imgNo=0
            }
            else{
                imgNo++;
            }
        }
        document.getElementById("myImg").onmouseover=function (){
            clearInterval(autoSlide)
        }
        document.getElementById("myImg").onmouseout=function (){
            slide()
        }
    </script>
</body>
</html>
About Author:-

I have come across so many difficult situations while learning JavaScript. I thought I can share my experience in my blog http://blog.sunlineitsolutions.com/  to the people which may be helpful for them. 
By Anil Singh | Rating of this article (*****)

Popular posts from this blog

39 Best Object Oriented JavaScript Interview Questions and Answers

Most Popular 37 Key Questions for JavaScript Interviews. What is Object in JavaScript? What is the Prototype object in JavaScript and how it is used? What is "this"? What is its value? Explain why "self" is needed instead of "this". What is a Closure and why are they so useful to us? Explain how to write class methods vs. instance methods. Can you explain the difference between == and ===? Can you explain the difference between call and apply? Explain why Asynchronous code is important in JavaScript? Can you please tell me a story about JavaScript performance problems? Tell me your JavaScript Naming Convention? How do you define a class and its constructor? What is Hoisted in JavaScript? What is function overloadin

25 Best Vue.js 2 Interview Questions and Answers

What Is Vue.js? The Vue.js is a progressive JavaScript framework and used to building the interactive user interfaces and also it’s focused on the view layer only (front end). The Vue.js is easy to integrate with other libraries and others existing projects. Vue.js is very popular for Single Page Applications developments. The Vue.js is lighter, smaller in size and so faster. It also supports the MVVM ( Model-View-ViewModel ) pattern. The Vue.js is supporting to multiple Components and libraries like - ü   Tables and data grids ü   Notifications ü   Loader ü   Calendar ü   Display time, date and age ü   Progress Bar ü   Tooltip ü   Overlay ü   Icons ü   Menu ü   Charts ü   Map ü   Pdf viewer ü   And so on The Vue.js was developed by “ Evan You ”, an Ex Google software engineer. The latest version is Vue.js 2. The Vue.js 2 is very similar to Angular because Evan You was inspired by Angular and the Vue.js 2 components looks like -

nullinjectorerror no provider for httpclient angular 17

In Angular 17 where the standalone true option is set by default, the app.config.ts file is generated in src/app/ and provideHttpClient(). We can be added to the list of providers in app.config.ts Step 1:   To provide HttpClient in a standalone app we could do this in the app.config.ts file, app.config.ts: import { ApplicationConfig } from '@angular/core'; import { provideRouter } from '@angular/router'; import { routes } from './app.routes'; import { provideClientHydration } from '@angular/platform-browser'; //This (provideHttpClient) will help us to resolve the issue  import {provideHttpClient} from '@angular/common/http'; export const appConfig: ApplicationConfig = {   providers: [ provideRouter(routes),  provideClientHydration(), provideHttpClient ()      ] }; The appConfig const is used in the main.ts file, see the code, main.ts : import { bootstrapApplication } from '@angular/platform-browser'; import { appConfig } from '

List of Countries, Nationalities and their Code In Excel File

Download JSON file for this List - Click on JSON file    Countries List, Nationalities and Code Excel ID Country Country Code Nationality Person 1 UNITED KINGDOM GB British a Briton 2 ARGENTINA AR Argentinian an Argentinian 3 AUSTRALIA AU Australian an Australian 4 BAHAMAS BS Bahamian a Bahamian 5 BELGIUM BE Belgian a Belgian 6 BRAZIL BR Brazilian a Brazilian 7 CANADA CA Canadian a Canadian 8 CHINA CN Chinese a Chinese 9 COLOMBIA CO Colombian a Colombian 10 CUBA CU Cuban a Cuban 11 DOMINICAN REPUBLIC DO Dominican a Dominican 12 ECUADOR EC Ecuadorean an Ecuadorean 13 EL SALVADOR

Angular 2, 4, 5, 6, 7, 8 and 9 Interview Questions and Answers -Books

» Are you preparing for Angular Interview? Buy this book (Including Angular 8, 7, 6, 5,4, 2) Interview Q/A Interview Q/A Interview Q/A Interview Q/A Interview Q/A Interview Q/A Interview Q/A » A Complete Guide Book of Angular 9 This is a concise, complete overview of the key aspects of Angular 9. It is fully up to date with the latest release of Angular. This article provide all the important aspects required for angular developers looking for brief and useful content... Posted In Angular 9 » A Complete Guide Book of Angular 8 This is a concise, complete overview of the key aspects of Angular 9. It is fully up to date with the latest release of Angular. This article provide all the important aspects required for angular developers looking for brief and useful content... Posted In Angular 8 » A Complete Guide Book of Angular 7 This is a concise, complete overview of the key aspects of Angular 7. It is fully up to date with the latest release of Angular. This