increase the length of textarea in html code example

Example 1: html set textarea value

// 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;

Example 2: scale textarea

<textarea rows="10" style="font-size:2vw; width:100%;"></textarea>