add jquery.fix.clone.js

Netdisco/share/public/javascripts/jquery.fix.clone.js

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+// Textarea and select clone() bug workaround | Spencer Tipping
+// Licensed under the terms of the MIT source code license
+
+// Motivation.
+// jQuery's clone() method works in most cases, but it fails to copy the value of textareas and select elements. This patch replaces jQuery's clone() method with a wrapper that fills in the
+// values after the fact.
+
+// An interesting error case submitted by Piotr Przybyl: If two <select> options had the same value, the clone() method would select the wrong one in the cloned box. The fix, suggested by Piotr
+// and implemented here, is to use the selectedIndex property on the <select> box itself rather than relying on jQuery's value-based val().
+
+(function (original) {
+  jQuery.fn.clone = function () {
+    var result           = original.apply(this, arguments),
+        my_textareas     = this.find('textarea').add(this.filter('textarea')),
+        result_textareas = result.find('textarea').add(result.filter('textarea')),
+        my_selects       = this.find('select').add(this.filter('select')),
+        result_selects   = result.find('select').add(result.filter('select'));
+
+    for (var i = 0, l = my_textareas.length; i < l; ++i) $(result_textareas[i]).val($(my_textareas[i]).val());
+    for (var i = 0, l = my_selects.length;   i < l; ++i) {
+      for (var j = 0, m = my_selects[i].options.length; j < m; ++j) {
+        if (my_selects[i].options[j].selected === true) {
+          result_selects[i].options[j].selected = true;
+        }
+      }
+    }
+    return result;
+  };
+}) (jQuery.fn.clone);
+
+// Generated by SDoc