form validation

[anfetienne]

is there a way to check if all form fields are filled in? i can do it singular but just need to know if it can be done

[pronerd]

@anfetienne
Yes. There are thousands of examples of JavaScript form validation available. Just Google for "JavaScript +form +validation".

[anfetienne]

i have a form validation method that i learned already....i cant find if its possible to validate a form as a whole rather than checking if a field is filled out?

[acoder]

Yes, you can. Check the links in the Offsite Links sticky. The basic idea is to validate all the elements of the form one by one onsubmit:

<form ... onsubmit="return validate()">

[anfetienne]

i think im going about this the wrong way.....is it possible for javascript to do this i.e. say if the form returns no errors then do something else?

[anfetienne]

ok ive done the validation.....is there a way i can get a value thats in javascript into a php.....i want to get the value that goes into obj2 into a php var......is it possible?

<script>
  function CopyValue(obj1, obj2)
  {
     var visibleField = obj1;
     obj2.value = visibleField.value;
  }
</script>
 

[acoder]

Yes, either pass it through the URL:

location.href="file.php?var="+encodeURIComponent(jsvar);

or set a hidden field value in the form to the variable value:

document.getElementById("hidden").value = jsvar;

Note:encodeURIComponent() encodes the value in case there are any special characters.

[anfetienne]

does this do so without having to go to another page or refresh?

[acoder]

Yes, but if you want to avoid that, use Ajax.