input - Change a Text with Javascript -

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i want chance text javascript use following code: 

<!doctype html public "-//w3c//dtd html 4.01 transitional//en"> <html><head> <meta http-equiv="content-type" content="text/html; charset=iso-8859-1"> <title>test</title> <script type="text/javascript"> var neu = document.getelementbyid("thema")[0].value; function aendern () {   document.all.meinabsatz.innerhtml = neu; } </script> </head><body> <p id="meinabsatz">text</p> <input id="thema" type="text" value="test theme" /> <a href="javascript:aendern()">chance theme</a> </body> </html>

if click on "chance theme" "text" chance "undefined"

method getelementbyid() returns single element, not set of elements. there no need in applying [0] it. should put neu initialization inside aendern() function:

function aendern() {     var neu = document.getelementbyid("thema").value;     document.all.meinabsatz.innerhtml = neu; }

demo: http://jsfiddle.net/rqgmb/


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