give height to text area code example

Example 1: html textarea height

<!-- textarea rows attribute -->
<textarea id="txtid" name="txtname" rows="4" cols="50" maxlength="200">
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</textarea>

Example 2: html textarea auto height to amount of text

$('textarea').each(function () {
  this.setAttribute('style', 'height:' + (this.scrollHeight) + 'px;overflow-y:hidden;');
}).on('input', function () {
  this.style.height = 'auto';
  this.style.height = (this.scrollHeight) + 'px';
});