random loop with jquery on Json data using forEach
Question
I have this code that shows all the images that are in a json file. Any way to show only 1 image and randomly with the ones in the.json?
I have this code:
$(document).ready(function() { $.getJSON('https://res.cloudinary.com/dkx20emez/image/list/dom.json', function(emp) { //the attribute resource is an array so you have to loop each element in it emp.resources.forEach(function(element){ var publicid = element.public_id; var format = element.format; var type = element.type; var version = element.version; $('#display').append('<img class="wrapper" src="https://res.cloudinary.com/dkx20emez/image/'+ type +'/v'+version +'/'+publicid+'.'+format +'">'); }); }); }); **css** body { padding: 50px; }.wrapper { width: 200px; height: auto; padding: 10px; background: #eee; }.random-faces { width: 100%; max-width: 200px; height: 0; padding-bottom: 100%; background-repeat: no-repeat; background-position: center center; background-size: cover; } //css <html><head> <script src= "https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"> </script></head> <body> <div class="wrapper" id="display" style="background-color:#39B54A;"></div> </body> </html>I thank you for your answers
1 answers
solution1
0 2022-02-02 01:29:51
You can just generate a random integer between 0 and the length of the returned array -1. I have included an easy method that performs this from this post:
Generate random number between two numbers in JavaScript
Then you can use that random integer as the index of emp.resources to get a random image.
See snippet below:
(I've forgotten most of the jQuery that I once knew, so there is Vanilla JS mixed in)
// Custom function to get a random integer between two numbers const randomIntFromInterval = (min, max) => Math.floor(Math.random() * (max - min + 1) + min); $(document).ready(function() { $.getJSON('https://res.cloudinary.com/dkx20emez/image/list/dom.json', function(emp) { //Get a random number between 0 and the length of the emp.resources array - 1 var index = randomIntFromInterval(0, emp.resources.length - 1) // Then just use that random number as the index of the array var element = emp.resources[index] var publicid = element.public_id; var format = element.format; var type = element.type; var version = element.version; //Create an img element const img = document.createElement(`img`); //Add in the class to the img img.classList.add(`wrapper`); //Add in the source to the img img.src = `https://res.cloudinary.com/dkx20emez/image/${type}/v${version}/${publicid}.${format}`; $('#display').append(img); }); });
body { padding: 5px; }.wrapper { width: 200px; height: auto; padding: 10px; background: #eee; }.random-faces { width: 100%; max-width: 200px; height: 0; padding-bottom: 100%; background-repeat: no-repeat; background-position: center center; background-size: cover; }
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div class="wrapper" id="display" style="background-color:#39B54A;"></div>
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