File API - FileReader (readAsText)

HTML

<!DOCTYPE html>
<html>
<head>
    <title>File API - FileReader as Text</title>
</head>
<body>
    <header>
        <h1>File API - FileReader (Text)</h1>
    </header>
    
        <label for="files">Select a file: </label>
        <input id="files" type="file" />
        <output id="result" />
    
</body>
</html>

CSS

body{
    font-family: 'Segoe UI';
    font-size: 12pt;
}

header h1{
    font-size:12pt;
    color: #fff;
    background-color: #1BA1E2;
    padding: 20px;

}
article
{
    width: 80%;
    margin:auto;
    margin-top:10px;
}


input[type='file']{
    margin:10px;
}

JavaScript

window.onload = function() {

    //Check File API support
    if (window.File && window.FileList && window.FileReader) {
        var filesInput = document.getElementById("files");

        filesInput.addEventListener("change", function(event) {

            var files = event.target.files; //FileList object
            var output = document.getElementById("result");
						console.log(output);
            for (var i = 0; i < files.length; i++) {
                var file = files[i];

                //Only plain text
                if (!file.type.match('plain')) continue;

                var picReader = new FileReader();

                picReader.addEventListener("load", function(event) {

                    var textFile = event.target;

                    var div = document.createElement("div");

                    div.innerText = textFile.result;
								
                    output.insertBefore(div, null);

                });

                //Read the text file
                picReader.readAsText(file);
            }

        });
    }
    else {
        console.log("Your browser does not support File API");
    }
}