place value in textarea code example
Example 1: capture textarea value
<textarea id="myTextarea">
Hello World
</textarea>
<script>
var x = document.getElementById("myTextarea").value;
</script>
Example 2: 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;