Convert closed question TextBox into TextArea

Challenge

In Single question or Multi Question, a textbox might not enough for respondent to give a long answer.
As a questionnaire creator
I want to convert a textbox into a textarea.

Code

 1 quest.onInit = function()
 2 {
 3     $.each($("input[type='text']"), function()
 4     {
 5         var inputName = this.name;
 6         var inputValue = this.value;
 7         var answerOptionValue = inputName.slice(inputName.lastIndexOf(".") + 1);
 8 
 9         if ($("input[value='" + answerOptionValue + "']").attr("checked"))
10             $(this).replaceWith("<textarea rows='8' cols='55' name='" + inputName + "'>" + inputValue + "</textarea>");
11         else
12             $(this).replaceWith("<textarea rows='8' cols='55' disabled = 'disabled'  name='" + inputName + "'>" + inputValue + "</textarea>");
13     });
14 }