JSFiddle - React, Tailwind, and code Playground

HTML

<div id = "results1">
    <ul id = "results">
        <li>1</li>
        <li>2</li>
        <li>3</li>
    </ul>
</div>

<input id="save-txt" class="button" type="button" value="Save to text" />

JavaScript

$('#save-txt').click(function() {
    window.open(
    'data:text/csv;charset=utf-8,' + 
    escape(
        $('#results li') // <- selector for source data here
            .map(function(){
                // format row here
                return $(this).text();
            })
            .get()
            .join('\r\n')
    )
);
});