javascript - TypeError: d.textarea1 is undefined , d.textarea1.value = sChoices; -

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hi have javascript code when click qualities want on select dropdown list display textarea. got error typeerror: d.textarea1 undefined d.textarea1.value = schoices;

is there wrong in code?

<!doctype html> <html> <head>   <title>list box 4 example</title>   <script type="text/javascript">     function tellme(d){       var schoices ="";       for(i=0; i<d.listbox.options.length; i++){         if(d.listbox.options[i].selected == true){           schoices += d.listbox.options[i].text +"\n";         }       }       d.textarea1.value = schoices;     }   </script> </head> <body bgcolor="lightgreen">   <form name="form1">     <p>girl's quaalities want?</p>     <select name="listbox" onchange="tellme(this.form)" multiple>       <option>pretty</option>       <option>sexy</option>       <option>hot</option>       <option>intelligent</option>       <option>funny</option>     </select>   </form>   <br />   choose:<br />   <textarea rows="4" cols="20" name="textarea1"></textarea> </body> </html>

any muchly appreciated! thanks

the textarea not in form therefore not able reference form elements, add form.

  <form name="form1">     <p>girl's quaalities want?</p>     <select name="listbox" onchange="tellme(this.form)" multiple>       <option>pretty</option>       <option>sexy</option>       <option>hot</option>       <option>intelligent</option>       <option>funny</option>     </select>   <br />   choose:<br />   <textarea rows="4" cols="20" name="textarea1"></textarea>   </form>

http://jsfiddle.net/tgv83/


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