javascript elements not working

Question

I was not able to get part of this javascript code working for unknown reason and display as undefined. How do I merge vote[1] into the formObj which is document.forms[0] Any other alternate solution?

var elements2 = formObj.elements['vote[' + pollId + ']';

Answer 1

There is a basic syntax error:

var elements2 = formObj.elements['vote[' + pollId + ']';

Should be

var elements2 = formObj.elements['vote[' + pollId + ']'];

Answer 2

Could it be that you want:

var elements2 = formObj.vote[pollId];

(Assuming "vote" is the name of several form elements)

You might want to read about how to handle forms in JavaScript.

Answer 3

I'm not a javascript programmer really, but from what I can see above in the code you are missing a "]" at the end of elements.

It looks like your setting elements2 to formObject.elements[i] where you using vote[pollId] as the index. So vote[pollId] should return an integer in this scenario.

I'm not sure if I understand the question

Javascript Arrays

var formObj = document.forms[0];
var i = formObj.length + 1;
formObj[i] =  vote[1];