přiřadit hodnotu textarea
<textarea class="article-input" id="article-input" type="text" rows="9" >{{article}}</textarea>
html set textarea hodnota
// To set the textarea value, you must insert the TEXT into the element.
<textarea>VALUE</textarea>
// javascript
var textarea = `<textarea>${value}</textarea>`;
document.getElementById('my_textarea_id').textContent = 'foo'
// php
$value = 'foo';
$textarea = "<textarea>$value</textarea>";
echo $textarea;
nastavit počáteční hodnotu textarea
<!-- Just add it between the tags -->
<textarea>Whatever you want in here</textarea>