if to check if field filled

[Tezler]

Hi i have an if structure checking to see of the fields have been filled in.
On the text fields though there is no value so how can i check to see if nothing there which would mean aint been filled in.
i tried

if(variable = ""){
bla bla bla ..............
}

doesnt work, please advise

[MikeFoster]

'=' is the assignment operator. You need to use the equality comparison operator:

if (myTextField.value == "") {
}
else {
}

Depending on what is required in the text fields, you might want to try something like...

if (myTextField.value.length < 5) {
  alert('invalid');
}
else {
}

[Tezler]

yeh i knew the ==
> mess up in last post!

as for the second way, that may just do the trick! becuase just saying "" donest do any thing!