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javascript: variable has no properties

P: 1
im trying to iterate thru form elements and pull out the ones with "note" in their name. getting "elementName has no properties" with the following code, and i don't understand why? any help is greatly appreciated. thx!

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  1. Code:
  3. function saveNotes(){ 
  4. var elementName=''; 
  5. var isNote=''; 
  6. for(i=0; i<document.formNotes.elements.length; i++){ elementName=document.formNotes.elements[i].name; isNote=elementName.indexOf('note'); 
  7. if (isNote!=-1) {
  8.  alert('its a note!'); 
  9. }
  10. }
  11. }
changing "elementName=document.formNotes.elements[i].name;" to "alert(document.formNotes.elements[i].name);" gives me the name. why won't it transfer the name of the element to the variable?

Jun 21 '06 #1
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2 Replies

Expert Mod 15k+
P: 16,027
Without the HTML it'd be difficult to say, but the code would work with, for example:
[html]<form name="formNotes">
<input type="text" name="notes">
<input type="button" onclick="saveNotes()" value="Save">
May 1 '08 #2

P: 428
Change this line-
to this:
elementName=document.formNotes.elements[i].name || '';

Chances are your form has a fieldset or some other member that is counted as a form element but returns undefined for the name attribute.

Give your undefined's the empty string, which will return -1 for any indexOf call.
May 1 '08 #3

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