JavaScript and CoffeeScript for focus on the first visible field of the first HTML form.

form_input_focus.js

/**
 * Miscellaneous JavaScript for focus on the first visible field of the first form.
 *
 * @namespace Belanton.Codes.Scripts
 * @see       https://gist.github.com/leonardomarques/f743541353e7d4148852
 * @author    Leonardo Marques <leonardo.marques@belanton.com>
 * @license   Licensed under the MIT license [http://www.opensource.org/licenses/mit-license.php]
 * @copyright Copyright (c) 2013 Belanton, Inc. [http://www.belanton.com]
 */

$(function () {

  // A gift to you:
  var $body = $("body");
  // Show a warning modal on IE.
  if ($body.hasClass("js-show-ie-warning")) {
    if ($.browser.msie && parseInt($.browser.version, 10) <= 7) {
      $("#IeWarningModal").modal("show");
    }
  }

  // focus on the first visible field of the first form
  $("form:first input[type!='hidden']:first").focus();
});

form_input_focus.js.coffee

###
 # Miscellaneous CoffeeScript for focus on the first visible field of the first form.
 #
 # @namespace Belanton.Codes.Scripts
 # @see       https://gist.github.com/leonardomarques/f743541353e7d4148852
 # @author    Leonardo Marques <leonardo.marques@belanton.com>
 # @license   Licensed under the MIT license [http://www.opensource.org/licenses/mit-license.php]
 # @copyright Copyright (c) 2013 Belanton, Inc. [http://www.belanton.com]
###

$ ->

  # A gift to you:
  $body = $("body")

  # Show a warning modal on IE.
  $("#IeWarningModal").modal "show"  if $.browser.msie and parseInt($.browser.version, 10) <= 7  if $body.hasClass("js-show-ie-warning")

  # focus on the first visible field of the first form
  $("form:first input[type!='hidden']:first").focus()
  return