HTML Forms & PHP: Can I process input on a dropdown form without a submit button (instantly as selected)?
I have a drop-down where users can select a couple of options. Can I get the option value right away and process an action without a submit button?
Example, a drop-down that has the option delete for a photo. As soon as a person selects delete in that list it will delete the photo.
开发者_开发知识库Can I test the $_POST['delete'] and delete the photo?
Thanks!
You can with JavaScript and AJAX. Otherwise you need to use a regular old POST with a submit button.
It is possible to force a form submit with JavaScript, as if the button had been pressed, but this is not good for usability.
Example of what I think you're going for with Javascript:
<?php
if (isset($_POST['action'])){
if ($_POST['action']=='Delete'){
// Code for deleting photo goes here
}
}
?>
<html>
<head></head>
<body>
<form method="POST" name="PhotoOptions">
<select name="action" onChange="document.forms['PhotoOptions'].submit()">
<option>Save</option>
<option>Delete</option>
</select>
</body>
</html>
加载中,请稍侯......
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