Check Text Field Value

by RainLover

HTML

<textarea rows="5" cols="35" id="field" oninput="indicate();"></textarea>
<div id="indicator"></div>
<script>
    function indicate() {
        var field = document.getElementById('field');
        var indicator = document.getElementById('indicator');
        if (field.value) {
            indicator.innerHTML = 'Some content';
        } else {
            indicator.innerHTML = 'No content';
        }
    }
    indicate();
</script>