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How to check if element exist?

ewaewa Members
edited November -1 in Sahi - Open Source
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.

Comments

  • tinchie8tinchie8 Members
    any updates on this??
  • tinchie8tinchie8 Members
    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.nithpankaj.nith Members
    Hi,

    Try if this works: 
    if(_condition(document.getElementsByTagName('select')[0] != null))
    do something;
else
    do something else;
    Regards,
    Pankaj.
  • narayannarayan Administrators
    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.
  • ewaewa Members
    Thank you.

    It works and It can be closed.
This discussion has been closed.