Bootstrap Navbar Collapse not closing on Click

问题

I'm using Bootstrap an it's collapsed Navbar on a one-page website together with a simple scrolling script, so if I click on a single link the page scrolls down to anchor - works great. However the Navbar does not collapse when I click on a link which covers a lot of content on mobile devices - you first have to click on the toggle which is annoying. I found out that it should help to add the data-toggle and data-target attributes to the links, but it doesn't work at all - where is my mistake?

NAVIGATION:

<nav class="navbar navbar-default mainbar" role="navigation">
    <div class="navbar-header">
        <button type="button" class="navbar-toggle hvr-bounce-to-bottom" data- toggle="collapse" data-target=".navbar-collapse">
          <span class="sr-only">Toggle navigation</span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
        </button>
    </div>

    <div class="collapse navbar-collapse navbar-collapse">
      <ul class="nav navbar-nav">
         <li><a data-toggle="collapse" data-target=".navbar-collapse" href="#link1" class="navelement">Link 1</a></li>

         <li><a data-toggle="collapse" data-target=".navbar-collapse" href="#link2" class="navelement">Link 2</a></li>

       </ul>
     </div>
</nav>

UPDATE: It's a Javascript problem. My smooth-scroll script causes an issue:

  var corp = $("html, body");
  $(".navelement").click(function() {
    var flag = $.attr(this, "href");
    corp.animate({
        scrollTop: $(schild).offset().top - 60
    }, 1600, function() {
        window.location.hash = flag;
    });
    return false;
});

It's a pretty simple script, but I have no clue what to do with it to make the navbar collapse.

回答1:

I would recommend following this a little bit closer to help you out. http://getbootstrap.com/components/#navbar Seems to be what you are basing it off of. Mainly, when you look @ that link, look at the first button line that you have and compare as that is your main drop down on the mobile version which takes up lots of screen real estate as you mentioned.

<nav class="navbar navbar-default mainbar" role="navigation">
    <div class="navbar-header">
        <button type="button" class="navbar-toggle hvr-bounce-to-bottom collapsed" data-toggle="collapse" data-target="#my-navbar-collapse">
          <span class="sr-only">Toggle navigation</span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
        </button>
    </div>

    <div class="collapse navbar-collapse" id="my-navbar-collapse">
      <ul class="nav navbar-nav">
         <li><a data-toggle="collapse" data-target=".navbar-collapse" href="#link1" class="navelement">Link 1</a></li>

         <li><a data-toggle="collapse" data-target=".navbar-collapse" href="#link2" class="navelement">Link 2</a></li>

       </ul>
     </div>
</nav>

1) I changed this part data- toggle="collapse" to data-toggle="collapse". There was just an extra space on line 3.

2) I added an id to your drop down instead of a class to identify more particularly (may not matter) and also changed the name to "my-navbar-collapse" This change was made on lines 3 and 11. Also this previously means you were just using the same class twice on the same element which didn't make sense.

3) I added the class "collapsed" into your class on line 3 located after "hvr-bounce-to-bottom" Should allow it to be collapsed by default, and only show if it is opened by the user.

That should help fix it as it cleans it up. Also, do you have a drop down in your nav bar that needs to be brought back up when you toggle other than the main button you listed? Doesn't seem so as of yet, just asking to make sure it's clear.

回答2:

I know this is a bit late coming in however, even in Bootstrap 4.0.0-alpha.6; the navbar does NOT inherently close after a menu item selection. The docs at Bootsrap have gotten better - but there is NO clear-cut example on how to get the navbar to close after a new menu selection.

In your html file - you go to the target div for the collapse class - the div I'm sowing below came strait from the Bootstrap site - so nothing has changed on that note:

<div class="collapse navbar-collapse" id="navbarSupportedContent">

You use that id to monitor if the navbar is expanded (out of collapsed mode), then I added a click event to the a.nav-links in the navbar that re-collapses the navbar:

$("#navbarSupportedContent").on('show.bs.collapse', function() {
    $('a.nav-link').click(function() {
        $("#navbarSupportedContent").collapse('hide');
    });
});

回答3:

The only problem with the solution above and the JSFiddle (jsfiddle.net/camdixon/v2gosj5s) is that when you are not on a mobile device, and the menu is not collapsed, the menu items blink. E.g. they collapse in place and reopen in place.

To repeat: expand the window of the JSFiddle result so that the menu is not collapsed, then click on a navbar item.

I've sort of solved the issue in addition to the JSFiddle version by altering the collapse data api in bootstrap.js as follows:

//Bootstrap v3.3.4
//line 662:
Collapse.prototype.toggle = function () {

//Added code: 
var mq = window.matchMedia('screen and (min-width: 768px)')
if (mq.matches) return
//End added code

this[this.$element.hasClass('in') ? 'hide' : 'show']()
}

I'd rather not hardcode the min-width, but don't yet know how I would access the media query values in the css (see @screen-sm-min in less).

回答4:

$(document).ready(function () {
        $(".navbar-nav li.trigger-collapse a").click(function(event) {
          $(".navbar-collapse").collapse('hide');
        });
      });

来源：https://stackoverflow.com/questions/28472815/bootstrap-navbar-collapse-not-closing-on-click

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