How to get a class of dynamically added content via innerhtml

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I am adding content to my HTML through JS by using innerHTML. But now when I try to access a class attached to that content I just get null. How would I access the class?

JavaScript

<pre>    fetch(url)
        .then((response) => {
            return response.json();
        }).then(data => {
            for (var i=0; i < data['data'].length; i++){
        
                var attributes = data.data[i].attributes,
                    title = attributes.title,
                    descr = attributes.description,
                    author = attributes.author,
                    available = attributes.available,
                    year = attributes.year,
                    id = data.data[i].id;
    
                var div = document.createElement("div");
    
                div.innerHTML = `title = ${title}, 
                                 descr = ${descr},
                                 author = ${author},
                                 available = ${available},
                                 year = ${year}
                                 <button type="button" value="${id}" class="delete">delete</button>`                 
    
                document.querySelector('.movieList').appendChild(div)
            }
        });

    const btns = document.querySelectorAll(".delete");
    console.log(btns);

What I have tried:

I have tried .getElementByClassName, but it also doesn't work :/

Posted 26-Mar-22 11:04am

Alexandra P. 2022

Updated 28-Mar-22 4:32am

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Chris Copeland · Answer 1 · 2022-03-28T04:32:00

I deleted my previous comment after reading the question again. The function you're using is correct, but I think you're using it in the wrong location. The fetch() function returns a Promise<> which is a fancy way of saying "this will produce something either now, or later on".

You've put your code for selecting the buttons outside of the then() function, which means that it will probably execute before the Promise<> has had chance to complete. You need to select the elements only once they've been appended to the HTML body:

JavaScript

    document.querySelector('.movieList').appendChild(div)


    const btns = document.querySelectorAll(".delete");
    console.log(btns);
  }
});