Javascript (with Sharepoint 2007) alert -

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i program java started programming javascript , searched , searched couldn't find works. problem there 4 input fields (parid, groups, customer , projectname) , wanted add values make large string e.g.: 123456_nec_franzi_seestadt every time try alert it keeps me saying "undefined"

<p> par id: <input id = "parid"> </p> <p> research group: <select id = "groups">     <option></option>     <option>bam</option>     <option>pas</option>     <option>avt</option>     <option>sra</option>     <option>nec</option>     <option>itp</option>     <option>eld</option>     <option>rft</option>     <option>see</option> </select> </p> <p> customer: <input id = "customer"> </p> <p> projectname: <input id = "projectname"> </p> <p> submit: <input id = "submit" type = "button" value = "submit" onclick = "output()"> </p>  <script> function output() {      var w, text;      // alert ("did work?");      document.getelementbyid("parid").value = w;      if (w != null) {         alert(w);         }       } </script>

document.getelementbyid("parid").value = w;

should be

w = document.getelementbyid("parid").value;

the variable assignment wrong way round. logical error, nothing specific javascript.

p.s. if want combine values of different fields, can use + operator concatenate them single string.


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