I need to make a form that, in order to enable a field, it is mandatory to fill in an earlier field.
There will be a pagination between one question and another (next or previous).
Can you do this in Ajax?
I'm using PHP and I think this can be done with AJAX or JQuery , but I do not know how to do this.
I made an example in JSFiddle here , I used > Bootstrap and jQuery , I have numbered the step with the 'date-step' attribute, and the field (s) ) required the 'required' attribute;
So the 'prev' and 'next' functions related to 'data-next' and 'data-prev' (attribute);
Validation and call in the 'next' function, passing the active step and validating.
Validation should be done in PHP!
With or without Bootstrap, what I usually do with this kind of forms is to do everything on the same page, using only PHP.
And with onChange change the action of the form.
<form action="">
...
//mudando de página
<input name="input1" onChange="this.form.action='novaPagina.php'">
//se pretender ficar na mesma página
<input name="input2">
<?php
if (isset($_POST['input2']))
{
//verificação que pretender, como por exemplo adicionar um campo:
echo "<input name='input3'>";
...
//ou preencher um campo
}
?>
...
</form>
If I do not get clarified tomorrow, I'll improve the answer.