单击具有父类条件的动态子DOM

Question

I have .main that contain a list of dynamic content that can be added on the fly. The .main can also be disabled with .disable class. When it's disabled, I don't want all the content items to be clicked.

You can see below that I am using a hack to detect .disable class after .main being clicked. Is there a way to structure the CSS selector for jQuery to avoid picking up children DOMs event if parent has certain class? Maybe some kind of .main:not(.disable) but I couldn't figure out how.

Code: http://jsfiddle.net/qhoc/99rjU/

HTML:

<div class="main">
    <div class="state">Enabled</div>
    <ul>
        <li><a href="#">Item 1</a></li>
        <li><a href="#">Item 2</a></li>
        <li><a href="#">Item 3</a></li>
    </ul>
</div>

<a class="btn" href="#">
Toggle State
</a>

Javascript:

$('.btn').on('click', function() {
    if ($('.main').hasClass('disable')) {
        $('.main').toggleClass('disable');
        $('.state').text('Enabled');
    } else {
        $('.main').toggleClass('disable');
        $('.state').text('Disabled');
    }
});

$('.main').on('click', ' ul li', function() {

    /* This is a hack
    if ($('.main').hasClass('disable'))
        return;
    */

    alert('Item is clicked');
});

I was thinking of other unclean alternatives :

1. Do whole body click event like this $('body').on('click', '.main:not(.disable) ul li', function() but this one is very ugly! It has to scan the whole body on each click

2. Unbind li click event each time a is trigger to call disable . But is this an optimal or best practice to do so?

UPDATE 1 :

So actually in my project I only want to disable the a in the list. Since there are other buttons and divs that I still want to trigger event. However, look like using this won't work

.disable li a
{
    pointer-events: none;
}

Here is the link for this http://jsfiddle.net/qhoc/99rjU/2/

Look like this is still experimental and won't work on anchor tag??

https://developer.mozilla.org/en-US/docs/Web/CSS/pointer-events

Answer 1

Well you could disable all click event's on the div when it has the class .disable with css:

.disable
{
    pointer-events: none;
}

This way nothing inside the div is clickable.

jsFiddle

For IE it is somehow harder, as IE 10 and below doesn't support pointer-events . However a great article has been written on how to bypass this with a layer function: http://www.vinylfox.com/forwarding-mouse-events-through-layers/

I hope this is what you mean.

Answer 2

$('.btn').on('click', function() {
    var main = $('.main');
    $('.state').text(main.hasClass('disable') ? 'Enabled' : 'Disabled');
    main.toggleClass('disable');
});

$('.main').on('click', 'li', function(e) {
    if ($(this).parents('.main.disable').length) {
        // actually this is similar to your alternative#1
        return;
    }
    alert('Item is clicked');
});

What about this?