问题
I stuck in a situation. I am using JS Helper. I used the following code.
<?php $this->Js->get('#client_id')
->event('change', $this->Js->request(array('action' => '../ajax/get_client_location_and_process'),
array('update' => '#client_location_process',
'async' => false,
'dataExpression' => true,
'method' => 'post',
'evalScripts' => true,
'data' => $this->Js->serializeForm(array('isForm' => True, 'inline' => True))
)
)
);
I want to trigger the change event on page load. If I am using document.ready method then it is not working. and I unable to find the JS Helper method where we can explicitly trigger some event on controls. Please suggest the code how can I perform JQuery trigger() like functionality on form elements whenever I need it.
回答1:
Since you already found out about .trigger()
in jQuery, you can just use it along with your view code:
<?php
// Your view code
?>
<script>$('#client_id').trigger('change');</script>
Alternatively, if you still prefer to do it via PHP, you can perhaps make your own helper, eg.:
<?php
class ArunjsHelper extends AppHelper {
public $helpers = array('Html');
function trigger($element, $event, $options = array()) {
return $this->Html->scriptBlock("$('$element').trigger('$event');");
}
}
Add ArunjsHelper
to $helpers
at controller:
<?php
class SomeController extends Controller {
public $helpers = array('Arunjs');
// Your controller code
}
You can then call it from view:
<h1>Hello</h1>
<p>Your usual view HTML code</p>
<?php // Trigger the change event ?>
<?php echo $this->Arunjs->trigger('#client_id', 'change'); ?>
来源:https://stackoverflow.com/questions/11305567/triggering-event-manually-in-js-helper-cakephp