Javascript Random Joke API Project for Beginners





Hey guys in this post, we will create a Javascript random Joke project for Beginners. Follow this tutorial till the end to understand the javascript concepts. we will create this project step by step. The final version of the app is live on the internet.

Topics covered


This application involves the following topics –

  • JavaScript XMLHttpRequest Constructor
  • JavaScript CSS Manipulation
  • JavaScript DOM Manipulation

Complete source code


The below image shows you the project structure –

Screenshot-2021-06-20-at-9-13-18-AM

Add styles to the application


Create a style.css file and add the following content –

body{
    text-align:center;
    margin-top: 100px;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 2;
    font-size: 2em;
    width: 800px;
    margin: 50px auto;
}

img{
    width: 10%;
    height: auto;
}
button{
    font-size: .8em;
    border-radius: 5px;
    background-color: orange;
    padding: 5px;
    cursor:pointer;
}

Add scripts to the application


Create an app.js file and add the following content –

const image = document.querySelector('img');
const jokeDIV = document.querySelector('#display-joke');
const button = document.querySelector('#get-joke');

button.addEventListener('click', function(){
    getRandomJoke();
})

function getRandomJoke(){
    const ajax = new XMLHttpRequest;
    const url = 'https://api.chucknorris.io/jokes/random'

    ajax.open('GET', url, true);

    ajax.onreadystatechange = function(){
        if(this.status === 200 && this.readyState === 4){
            console.log(this.responseText);
            let data = JSON.parse(this.responseText);
            jokeDIV.innerHTML = `${data.value}`
        } else {
            this.onerror = onerror();
        }
    }
    ajax.send();
}

function onerror(){
     jokeDIV.textContent = 'There was an error!';  
}

Add HTML to the application


Create an index.html file and add the following content –

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link rel="stylesheet" href="style.css">
    <title>Chuck Norris Random Joke AJAX Project</title>
</head>
<body>
    <img src='https://assets.chucknorris.host/img/avatar/chuck-norris.png'>
    <div id="display-joke">Display the button below to retrieve a random Chuck Norris Joke!</div>
    <button id="get-joke">Get Joke!</button>
    <script src="app.js"></script>
</body>
</html>

Screenshots


Screenshot-2021-06-20-at-9-43-40-AM

Download the complete source code from github repository

Original source https://jsbeginners.com/random-joke-javascript-ajax-project/

That’s it for this post. Hope you liked it, if you did then please share this with your friends and colleagues. Also, share this post in your social media profiles. Thanks, I will see you in the next post.



About the author

Bushan Sirgur

Hey guys, I am Bushan Sirgur from Banglore, India. Currently, I am working as an Associate project in an IT company.

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