How can I select all elements with the same class name?

Question

I have a Boolean variable. It is stored in a hidden input field. Basically, if the user is signed in, it is false, if not, it is true.

Ther

Answer 1

Loop through each div that contains your download button and set hidden to true:

if (document.getElementById('download_btn_var_input').value == "true") {
    var button_divs_array = document.getElementsByClassName('project_download_btn');
    for (var i = 0; i < button_divs_array.length; i++) {
        button_divs_array[i].hidden = true;
    }
}