如何添加新的文本框并下拉？

Question

I'm currently working on a rails project.

I have a text_field and a select_tag on the same row. I want a new row of text box and drop down list to be created whenever I have at least one character typed in the current text box. But I'm not sure how to do so. I assume I'd need to use jquery? But I'm still a newbie with web programming...

Please help! Many thanks!!!

Answer 1

You'd add fields and then apply a hidden value to them using jQuery's document ready function. Then apply a keyup function to the existing field you want it to trigger off of that calls show on the hidden item.

Here's the jquery I used in a wordpress page to do exactly that:

$(document).ready(function() {
  $("#fieldtohide").hide();
  $("#nonhiddenfield").keyup(function() {
    $("#fieldtohide").show();
  });
});