Vanilla Javascript (JS) implementation of a file selection dialog that open and read local text files

textfile_loader.js

let input = document.createElement('input');
input.type = 'file';
input.multiple = true;
input.onchange = e => { 
    let files = e.target.files; 
    for (var i = 0; i < files.length; i++){
        let read = new FileReader();
        read.readAsBinaryString(files[i]);
        read.onloadend = function(){
            //Content of the file selected
            console.log(read.result);
        }
    }
}
input.click();