How to check if element exist?

ewa

Hi All,
I don't know How to check if the page element 'select' or 'input' exist on page source and if not exist go forward with the scripts without errors, is it possible?
Example I have 2 Tags to distinguish:
document.getElementsByTagName('select')[0]
document.getElementsByTagName('input')[5]
I don't need values witch were put into those fields I only would like to know if they exist.

tinchie8

any updates on this??

tinchie8

i got something that counts the number of inputs in a page

var $ctr = 0;
var $inputElement = document.getElementsByTagName('input');

for(var $i=0; $i < $inputElement.length; $i++)
$ctr++;

i dont know if this will be ok for you.....

if ($ctr == 0)
//if not exist just do something that does not affect script
else
// i dont know what you are going to do here.....

pankaj.nith

Hi,

Try if this works:

if(_condition(document.getElementsByTagName('select')[0] != null))
    do something;
else
    do something else;

Regards,
Pankaj.

narayan

Does this work?

if (_condition(_select(0) != null)){
  do x;
}
else{
  do y;
}

For input, you could either do

if (_condition(document.getElementsByTagName('input').length > 6 && document.getElementsByTagName('input')[5] != null))

or 

if (_condition(_text(5) != null)) // Use the correct type of input tag.

ewa

Thank you.

It works and It can be closed.