JQuery addclass to selected div, remove class if another div is selected

问题

I'm making a formbuilder, I would like to change the appearance of for example a heading div. When clicked it should get a border but when another dynamically generated div is clicked the class should be removed and the second clicked div has to get the .active class.

How can I do this with generated divs?

Anyway I found something that works but I still need the If another div is selected, previous div.removeclass and selected div.addclass

This works:

/* Add Class */
$(document).ready(function() {
    $( document ).on( 'click', '.HeadingDiv', function () { /* This '.HeadingDiv' could be anything, I need something dynamic here */
        $('.HeadingDiv').removeClass('active'); /* This '.HeadingDiv' could be anything, I need something dynamic here */
        $(this).addClass('active');
    });
});

回答1:

Are you looking something like this short and effective:

http://jsfiddle.net/XBfMV/

$('div').on('click',function(){
  $('div').removeClass('active');
  $(this).addClass('active');
});

you can simply add a general class 'active' for selected div. when a div is clicked, remove the 'active' class, and add it to the clicked div.

回答2:

It's all about the selector. You can change your code to be something like this:

<div class="formbuilder">
    <div class="active">Heading</div>
    <div>1</div>
    <div>2</div>
    <div>3</div>
    <div>4</div>
</div>

Then use this javascript:

$(document).ready(function () {
    $('.formbuilder div').on('click', function () {
        $('.formbuilder div').removeClass('active');
        $(this).addClass('active');
    });
});

The example in a working jsfiddle

See this api about the selector I used: http://api.jquery.com/descendant-selector/

回答3:

You can use a single line to add and remove class on a div. Please remove a class first to add a new class.

$('div').on('click',function(){
  $('div').removeClass('active').addClass('active');     
});

回答4:

In this mode you can find all element which has class active and remove it

try this

$(document).ready(function() {
        $(this.attr('id')).click(function () {
           $(document).find('.active').removeClass('active');
           var DivId = $(this).attr('id');
           alert(DivId);
           $(this).addClass('active');
        });
  });

回答5:

I had to transform the divs to list items otherwise all my divs would get that class and only the generated ones should get it Thanks everyone, I love this site and the helpful people on it !!!! You can follow the newbie school project at http://low-budgetwebservice.be/project/webbuilder.html suggestions are always welcome :). So this worked for me:

            /* Add Class Heading*/
            $(document).ready(function() {
            $( document ).on( 'click', 'ul#items li', function () { 
            $('ul#items li').removeClass('active'); 
            $(this).addClass('active');
            });
            });

回答6:

**This can be achived easily using two different ways:**

1)We can also do this by using addClass and removeClass of Jquery
2)Toggle class of jQuery

**1)First Way**

$(documnet.ready(function(){
$('#dvId').click(function(){
  $('#dvId').removeClass('active class or your class name which you want to    remove').addClass('active class or your class name which you want to add');     
});
});

**2) Second Way**

i) Here we need to add the class which we want to show while page get loads.
ii)after clicking on div we we will toggle class i.e. the class is added while loading page gets removed and class which we provide in toggleClss gets added :)

<div id="dvId" class="ActiveClassname ">
</div

$(documnet.ready(function(){
$('#dvId').click(function(){
  $('#dvId').toggleClass('ActiveClassname InActiveClassName');     
});
});


Enjoy.....:)

If you any doubt free to ask any time...

来源：https://stackoverflow.com/questions/18877544/jquery-addclass-to-selected-div-remove-class-if-another-div-is-selected

标签

jquery

css

addclass

removeclass