JSFiddle - React, Tailwind, and code Playground

by Lucas Kacher

HTML

<input type="text" id="textbox" value="" />
<br />
<textarea name="textarea" id="textarea" cols="30" rows="10"></textarea>
<br />
<button id="button">Check Input</button>

<h2>Output: <span id="output">&nbsp;</span></h2>

JavaScript

jQuery('#button').click(function () {
    var textVal = $('#textbox').val();
    var textArea = $('#textarea').val();
    var matching = new RegExp('\\b' + textVal + '\\b', 'g');
    var count = textArea.match(matching);
    var result = 0;

    if (count !== null) {
        result = count.length;
    }

    jQuery('#output').html(result);
});