在选择时，动态填充 textarea — jQuery

Question

我正在使用 WordPress 的 Gravity Forms 插件，我正在尝试让其中一个选择菜单动态更新 textarea 中的文本。我对 jQuery 很陌生，如果能帮助我理解如何使我的代码正常工作，我将不胜感激。

<script type="text/javascript"> 
    $(document).ready(function() {

        $('#input_27').change(function() {
            var divetext = $('#input_27').val();
            var divewords = '';
            if (divetext == 'Standard') {
            divewords = 'All Ye Surface Sailors, aviators, fossil-fuelers, landlubbers, and other innocents Know ye and Mark ye that from (date) to (date) the inner depths of my subaqueous realm were visited by a very large black denizen.  On careful examination by my mermaids this great black fish was identified as (Name of submarine). I am informed that among the distinguished on board at that time was (Recipient name). By this my decree, this Submariner is awarded and shall bear in perpetuity the honored title of Deep Diver and shall be accorded all the perquisites and privileges that befit this exalted status.';
            }
            else if (divetext == '1st Dive') {
            divewords = 'All Ye Surface Sailors, aviators, fossil-fuelers, landlubbers, and other innocents Know ye and Mark ye that from (date) to (date) the inner depths of my subaqueous realm were visited by a very large black denizen.  On careful examination by my mermaids this great black fish was identified as (Name of submarine). I am informed that among the distinguished on board for their 1st Dive was (Recipient name). By this my decree, this Submariner is awarded and shall bear in perpetuity the honored title of Deep Diver and shall be accorded all the perquisites and privileges that befit this exalted status.';
            }
            else if (divetext == 'Last Dive') {
            divewords = 'All Ye Surface Sailors, aviators, fossil-fuelers, landlubbers, and other innocents Know ye and Mark ye that from (date) to (date) the inner depths of my subaqueous realm were visited by a very large black denizen.  On careful examination by my mermaids this great black fish was identified as (Name of submarine). I am informed that among the distinguished on board for their last time was (Recipient name). By this my decree, this Submariner is awarded and shall bear in perpetuity the honored title of Deep Diver and shall be accorded all the perquisites and privileges that befit this exalted status.';
            }
            else if (divetext == 'Honorary Submariner') {
            divewords = 'All Ye Surface Sailors, aviators, fossil-fuelers, landlubbers, and other innocents Know ye and Mark ye that from (date) to (date) the inner depths of my subaqueous realm were visited by a very large black denizen.  On careful examination by my mermaids this great black fish was identified as (Name of submarine). I am informed that among the distinguished on board at that time was (Recipient name). By this my decree, this Submariner is awarded and shall bear in perpetuity the honored title of Deep Diver and shall be accorded all the perquisites and privileges that befit this exalted status.';
            }
            else {
            divewords = 'All Ye Surface Sailors, aviators, fossil-fuelers, landlubbers, and other innocents Know ye and Mark ye that from (date) to (date) the inner depths of my subaqueous realm were visited by a very large black denizen.  On careful examination by my mermaids this great black fish was identified as (Name of submarine). I am informed that among the distinguished on board at that time was (Recipient name). By this my decree, this Submariner is awarded and shall bear in perpetuity the honored title of Deep Diver and shall be accorded all the perquisites and privileges that befit this exalted status.';
            }
            $("#input_20").val(divewords);    
        });​
    });
</script> 

（代码也位于：http://pastie.org/pastes/5476003）

input_27 — 选择菜单的 ID。 input_20 — 文本区域的 ID。

简而言之，我希望 textarea 中的语言根据他们从下拉列表中选择的项目而改变。

提前致谢。 :)

Answer 1

请试试这个。

请替换此代码：

var divetext = $('#input_27').val();

到

var divetext = $('#input_27:selected').text();