Add a textarea into PhoneSites

example.html

<-- place this in the Custom Code section, or in a clode block below the form -->
<script>
var form= document.querySelector('form');
var submitBtn= document.getElementById('submit');
var textareaWrap= document.createElement('div');
textareaWrap.className= 'relative db cf';
var textareaLabel= document.createElement('label');
textareaLabel.innerHTML= 'Textarea Label Here';
textareaWrap.appendChild(textareaLabel);
var textarea= document.createElement('textarea');
textarea.className= 'textarea-reset ba b--black-20 fl bg-white pa3 lh-copy w-100 br2 mb2';
textareaWrap.appendChild(textarea);
form.insertBefore(textareaWrap, submitBtn);

window.beforePost= function(){
 formData.textarea= textarea.value;
};
</script>