Switch a class to a button group

Question

I have the following markup for a group of buttons:

<div class="btn-group pull-right">
    <button type="button" class="btn btn-default" id="today">Today</button>
    <button type="button" class="btn btn-default" id="this_week">This Week</button>
    <button type="button" class="btn btn-default" id="this_month">This Month</button>
    <button type="button" class="btn btn-default" id="custom">Custom</button>
</div>

I'm trying to replace a class btn-defaultwith a class btn-primaryon a button using jQuery so that when I click on the button I clicked the next one class="btn btn-primary"and any other button in the group with the class will btn-primaryswitch to btn-default.

Is there a more elegant solution for what I presented below? Do I have to write a function for each button? Also, I risk adding btn btn-defaultto a button that already has this class. Any help is appreciated.

$("#today").click(function () {
    $(this).parent().find("btn btn-primary").removeClass("btn btn-primary");
    $(this).parent().addClass("btn btn-default");
    $(this).addClass("btn btn-primary");
});

Answer 1

Demo

$('.btn-group').on('click', '.btn', function() {
  $(this).addClass('btn-primary').siblings().removeClass('btn-primary').addClass('btn-default');
});

.btn-default {
  color: red;
}
.btn-primary {
  color: green;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.0/jquery.min.js"></script>
<div class="btn-group pull-right">
  <button type="button" class="btn btn-default" id="today">Today</button>
  <button type="button" class="btn btn-default" id="this_week">This Week</button>
  <button type="button" class="btn btn-default" id="this_month">This Month</button>
  <button type="button" class="btn btn-default" id="custom">Custom</button>
</div>

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• $(this): button pressed
• addClass('btn-primary'):
• .siblings('.btn'): ( ), btn this
• .removeClass('btn-primary').addClass('btn-default'): siblings

Answer 2

, btn-default btn-primary, btn-primary, btn-default, .

$('.btn-group .btn').on('click', function() { // On the click event for each button
  $(this) // get the button being clicked
    .addClass('btn-primary') // add the `btn-primary` class
    .siblings('.btn-primary') // get all sibling buttons which may already be selected
    .removeClass('btn-primary'); // remove the selected class
});

<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="btn-group pull-right">
  <button type="button" class="btn btn-default" id="today">Today</button>
  <button type="button" class="btn btn-default" id="this_week">This Week</button>
  <button type="button" class="btn btn-default" id="this_month">This Month</button>
  <button type="button" class="btn btn-default" id="custom">Custom</button>
</div>

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Answer 3

.toggleClass()

var buttons = $("button");
buttons.on("click", function() {
  buttons.toggleClass("btn-default", true).removeClass("btn-primary")
  .filter(this).toggleClass("btn-primary btn-default");
})

.btn-primary {
  background:yellow;
}

.btn-default {
  background:green;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="btn-group pull-right">
        <button type="button" class="btn btn-default" id="today">Today</button>
        <button type="button" class="btn btn-default" id="this_week">This Week</button>
        <button type="button" class="btn btn-default" id="this_month">This Month</button>
        <button type="button" class="btn btn-default" id="custom">Custom</button>
      </div>

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