I created a simple form. How could I add JavaScript commands after form was validated? Why is it so hard do this?
$form['submit'] = array(
'#type' => 'submit',
'#value' => 'submit',
'#validate' => 'my_validate_callback',
'#ajax' => array(
'callback' => 'my_form_callback',
'method' => 'replace',
'wrapper' => 'form-wrap',
'effect' => 'fade'
)
);
If you only want to add a JS file in validate or Ajax handler function you just need to add JS to form with drupal_add_js or attach it to form.
This is an example of how can you add JavaScript in Ajax callback function:
function my_form_callback(&$form,$form_state){
if(some validation ){
$form['#attached']['js'] = array(
drupal_get_path('module', 'ajax_example') . '/ajax_example.js',
);
}
return $form;
}
