JSFiddle - React, Tailwind, and code Playground

HTML

<textarea id = "textArea">
            Notes here...
        </textarea>
            <button type="button" value="save" id="save"> Save</button>

JavaScript

function saveTextAsFile()
        {
            var textToWrite = document.getElementById('textArea').value;
            var textFileAsBlob = new Blob([textToWrite], {type:'text/plain'});
            var fileNameToSaveAs = "ecc.plist";
        
            var downloadLink = document.createElement("a");
            downloadLink.download = fileNameToSaveAs;
            downloadLink.innerHTML = "Download File";
            
            downloadLink.href = window.webkitURL.createObjectURL(textFileAsBlob);
            downloadLink.click();
        }
    
        var button = document.getElementById('save');
        button.addEventListener('click', saveTextAsFile);