Returning "null" or "false" if nextSibling doesn't exist

phub11

Hi all,

I have a routine that checks to see if an ID has been set for the next row down in a table. Everything works fine except if I'm on the last row and no row exists; the routine just hangs:

Expand|Select|Wrap|Line Numbers

var checkNext = obj.parentNode.parentNode.nextSibling.id;

Any ideas how I can get this to return "null" or "false" is there isn't a subsequent row in the table?

Many thanks in advance!

Dormilich

you can test for the next sibling first

Expand|Select|Wrap|Line Numbers

 if (obj.parentNode.parentNode.nextSibling)

// or

if ("undefined" == typeof obj.parentNode.parentNode.nextSibling)

phub11

Works like a charm!

Thanks!

Quote:

Originally Posted by Dormilich

you can test for the next sibling first

Expand|Select|Wrap|Line Numbers

 if (obj.parentNode.parentNode.nextSibling)

// or

if ("undefined" == typeof obj.parentNode.parentNode.nextSibling)

Dormilich

you could do even more...

Expand|Select|Wrap|Line Numbers

 if (sibl = obj.parentNode.parentNode.nextSibling)

{

    var checkNext = sibl.id;

}

// ...

Returning "null" or "false" if nextSibling doesn't exist

re: Returning "null" or "false" if nextSibling doesn't exist

re: Returning "null" or "false" if nextSibling doesn't exist

re: Returning "null" or "false" if nextSibling doesn't exist

Similar JavaScript / Ajax / DHTML bytes

/bytes/development

/bytes/it

/bytes/about