fs.readdir 不检索文件

Question

I want to make a JavaScript code that created dynamically a list of files that I have in a specific folder on my server. This list will be presented when I press a button and each object will have a checkbox. The selected items will then be downloaded with another submit button and I guess some PHP.

So far I used JavaScript code I found online to find the names of the files and then call another function to create the elements but no luck. It seems that the function doesn't retrieve any files. Here is my code:

function createEl(a){
    var myDiv = document.getElementById("cboxes");
    var checkBox = document.createElement("input");
    var label = document.createElement("label");
    checkBox.type = "checkbox";
    checkBox.value = a;
    myDiv.appendChild(checkBox);
    myDiv.appendChild(label);
    label.appendChild(document.createTextNode(a));

}
function foldlist(){
const testFolder = './xampp/htdocs/website1/uploads';
const fs = require('fs');

fs.readdir(testFolder, (err, files) => {
  files.forEach(file => {`enter code here`
    var a=file;
    createEl(a);
  });
})}

Answer 1

as @str mentioned i mixed up frontend and backend javascript. Thank you all for the replies