Clicking outside of Bootstrap Modal inputs causes them to lose focus

Currently, I am tackling a challenge involving 2 bootstrap modals located on the same page with Bootstrap version 2.3.2.

A frustrating issue that has arisen is that whenever either modal appears, the first time you click on any of the inputs within the modal, it loses focus immediately. After this initial hiccup, everything functions properly in terms of focus; it's just that first instance.

I have researched similar issues online but unfortunately, none of the suggested solutions seem to work for me. Here are the strategies I have tried:

1.)

$('#Modal').focus(function (e) {
        e.preventDefault();
});

2.) There was mention of removing an "in" class from the modal, however, my modal doesn't have this class.

3.) I attempted commenting out a portion of the bootstrap code as a potential fix, although this is not an ideal solution. I couldn't pinpoint the exact piece of code mentioned, but experimented with something similar without success.

4.) I played around with setting focus on an input (which works initially until another element is clicked), and also trying to prevent the default behavior again.

$('#Modal').on('shown', function (e) {
        e.preventDefault();
        $('#textArea').focus();
});

At this stage, I have exhausted my resources on Google and I am struggling to identify why this issue is occurring. Any insights or suggestions on how to resolve this problem would be greatly appreciated.

Answer №1

I faced a similar issue and was able to resolve it successfully.

Identifying the problem

It seems like your modal has the "fade" class for transitioning in and out, but for some reason, the initial transition effect was not working as expected. This was the case for me as well.

The root of the problem lies in the code snippet within bootstrap.js's Modal class (specifically in the show function):

var transition = $.support.transition && that.$element.hasClass('fade')
...
transition ?
  that.$element.one($.support.transition.end, function () {
    that.$element.focus().trigger('shown') 
  }) :
  that.$element.focus().trigger('shown')

Essentially, if you have transitions enabled on the modal, it waits for the "transition end" event before focusing on the modal and triggering the "shown" event.

Due to the initial intro transition not really taking place, no transition end event was triggered. Consequently, the callback kept waiting for the next event, which ironically came from the blue glow effect on the text box when it gained focus.

The text box's glow initiated a transition end event, caught by Bootstrap's handler, leading to focusing on the modal and triggering the "shown" event.

Solution

In my case, resolving the problem involved removing the "in" class from the modal element. However, since you mentioned not having this in step #2, a possible workaround could be preventing the transition end event from reaching the modal's listener:

$textField.on($.support.transition.end, function(e){
  e.stopPropagation()
})

This adjustment aims to ensure that the modal receives another transition end event (e.g. during its transition out), potentially re-syncing itself (explaining why the issue only occurred on the first opening).

Hopefully, this solution proves effective for you too! Despite the age of the question, I hope it addresses any lingering curiosity from back then 😉

Answer №2

Encountered a similar issue, which appears to be linked to Bootstraps' "blue highlight on focus" feature. Personally, I wasn't bothered by its removal, but struggled to disable the style using "!important", applying none styles, etc. As a workaround, I took the following steps to resolve this specific issue...

To address this, I decided to comment out the CSS in my bootstrap.css file that targeted the focus pseudoclass for input elements:

/*
textarea:focus,
input[type="text"]:focus,
input[type="password"]:focus,
input[type="datetime"]:focus,
input[type="datetime-local"]:focus,
input[type="date"]:focus,
input[type="month"]:focus,
input[type="time"]:focus,
input[type="week"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
input[type="url"]:focus,
input[type="search"]:focus,
input[type="tel"]:focus,
input[type="color"]:focus,
.uneditable-input:focus {
  border-color: rgba(82, 168, 236, 0.8);
  outline: 0;
  outline: thin dotted \9;

  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
     -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
          box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
} */

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