Change Bootstrap modal option once it already exis

问题:

I'm using Bootstrap Modal. I declare it, I call it, I show it...everything seems to be ok.

But what if I have an already existing modal previously shown with "keyboard" property to false and I want to change it on the go? I mean something like:

First, I create a Modal doing this (as you can see, I declare the modal putting keyboard property to false):

$('#myModal').modal({
    show: false,
    backdrop: true,
    keyboard: false
});

But then I declare this event handler, that means that if "something" happens, I want the keyboard property to be set to true.

 $('#myModal').on('shown', function(e) {
    if (something){
        $('#myModal').modal({keyboard: true});
    }
 }

So, when I go

$("#myModal").show();

The event handler is not doing what it is supposed to, as I am not getting to close the modal once Escape key is pressed. But I am completely sure that "something" is true and I have checked and re-checked that $('#myModal').modal({keyboard: true}) is executed.

Any clue as to why this isn't updating the value of configuration option?

回答1:

To change configuration settings on already initiated Bootstrap plugin, such as the Modal, you need to access the plugin object attached to the element, like $('#pluginElement').data['somePlugin'] and then set the options in it.

For the Modal, you need:

$('#myModal').data('modal').options.keyboard = true;

JSFiddle Demo (old)

---

For Bootstrap 3 (as mentioned in comments by @Gerald ), you need bs.modal:

$('#myModal').data('bs.modal').options.keyboard = true;

Waiting Modal Example

回答2:

A bit beyond the scope of the OP, but this is now twice I have searched for the same solution (my memory is crap) and twice that I came across this question which led me to my eventual answer. My issue was how to make an already init'ed and displayed modal, which was "closeable", into an "uncloseable" model. In the rare even that another user needs this answer, here is what I did based on the accepted answer:

*bootstrap3 used

$('#modal').off('keyup.dismiss.bs.modal'); // disable escape key
$('#modal').data('bs.modal').options.backdrop = 'static';
$('#modal button.close').hide();

Notice that I didn't change the options.keyboard property to false (followed by calling escape()) as suggested above. I could not get that to work, so after looking the Bootstrap source, I saw that all it was doing was simply removing an event listener for 'keyup.dismiss.bs.modal'.

To re-enabled things (in my scenario, when the model is hidden):

$('#modal').on('hidden.bs.modal', function (e) {
    $(this).data('bs.modal').escape(); // reset keyboard
    $(this).data('bs.modal').options.backdrop = true;
    $('button.close', $(this)).show();
});

This seems COMPLETELY clumsy and will for sure break in coming versions of Bootstrap, but works for now...

Cheers :)

回答3:

For bootstrap4

To disable closing modal on escape button:

$('#myModal').off('keydown.dismiss.bs.modal');

To disable closing modal on clicking on backdrop:

$('#myModal').data('bs.modal')._config.keyboard = false;

As warned by nocturnal, this may break in the future versions of bootstrap.

回答4:

You can also add an attribute in your HTML tag: data-keyboard="false"

<div id="myModal" class="modal hide fade" data-keyboard="false" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"></div>

It works for me!

回答5:

Another option if you do not know if the modal has already been opened or not yet and you need to configure the modal options (Bootstrap 3):

var $modal = $('#modal');
var keyboard = false; // Prevent to close by ESC
var backdrop = 'static'; // Prevent to close on click outside the modal

if(typeof $modal.data('bs.modal') === 'undefined') { // Modal did not open yet
    $modal.modal({
        keyboard: keyboard,
        backdrop: backdrop
    });
} else { // Modal has already been opened
    $modal.data('bs.modal').options.keyboard = keyboard;
    $modal.data('bs.modal').options.backdrop = backdrop;

    if(keyboard === false) { 
        $modal.off('keydown.dismiss.bs.modal'); // Disable ESC
    } else { // 
        $modal.data('bs.modal').escape(); // Resets ESC
    }
}

Thanks @nokturnal

回答6:

Setting backdrop and esckey not to close the modal when the modal is already open

$('div[name="modal"]').data('bs.modal').options.backdrop = 'static';
$('div[name="modal"]').off('keydown.dismiss.bs.modal');

Unset the backdrop and key esc purpose to not close the modal

$('div[name="user_profile_modal"]').data('bs.modal').options.backdrop = true;
$('div[name="user_profile_modal"]').data('bs.modal').escape();