Tri-party class switch-up

I successfully implemented two radio buttons to toggle between alternative texts:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
   "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"
            type="text/javascript"></script>
    <style type="text/css">
        .displayNone { display: none; }
    </style>
</head>

<body>

    <input type="radio" name="toggle" />A
    <input type="radio" name="toggle" />B

    <span class="A">A</span>
    <span class="B displayNone">B</span>

<script type="text/javascript">
    $('input[name=toggle]').change(function() {
        $('.A, .B').toggleClass('displayNone');
    })
</script>

</body>
</html>

Now, I am looking to expand this functionality with three radio buttons to switch between three different texts:

<input type="radio" name="toggle" />A
<input type="radio" name="toggle" />B
<input type="radio" name="toggle" />C

<span class="A">A</span>
<span class="B displayNone">B</span>
<span class="C displayNone">C</span>

I believe the solution I have in mind might be too lengthy. Can you suggest a more concise approach?

javascriptjqueryhtmlcss

Answer №1

Here's another method to achieve the same result:

$('input:radio[name="toggle"]').change(
    function(){
        $('span')
            .eq($(this).index())
            .removeClass('displayNone')
            .siblings('span')
            .addClass('displayNone');
    });​

Check out this JS Fiddle demo for a live example..

Edited to include a pure CSS alternative, suitable for modern web browsers:

input[type=radio]:nth-child(1):checked ~ span:nth-of-type(1),
input[type=radio]:nth-child(2):checked ~ span:nth-of-type(2),
input[type=radio]:nth-child(3):checked ~ span:nth-of-type(3){
    height: 1em;
    width: 100%;
    background-color: #f90;
    -webkit-transition: all 1s linear;
    -ms-transition: all 1s linear;
    -o-transition: all 1s linear;
    -moz-transition: all 1s linear;
    transition: all 1s linear;
}

span {
    display: block;
    overflow: hidden;
    height: 0;
    width: 0;
    background-color: #fff;
    -webkit-transition: all 1s linear;
    -ms-transition: all 1s linear;
    -o-transition: all 1s linear;
    -moz-transition: all 1s linear;
    transition: all 1s linear;
}​

View the CSS-only JS Fiddle demo here..

Resources for jQuery methods:

CSS Resources:

Answer №2

Here is a simple approach: Check out this jsFiddle example.

$('input[name=toggle]').change(function() {
    $('span').addClass('displayNone').filter('span:eq(' + $(this).index() + ')').removeClass('displayNone');
})​

Answer №3

If you're looking for a creative way to hide and show elements, this CSS trick might do the trick. Check it out:

div {
  visibility: hidden;
}

input[type="checkbox"]:checked + * {
  visibility: visible;
}

Try it out and see how it works for your project!

Answer №4

Here is an alternative method to achieve the same result (see demonstration: http://example.com)

<input type="radio" name="switch" value="X" checked="true"/>X
<input type="radio" name="switch" value="Y"/>Y
<input type="radio" name="switch" value="Z"/>Z

<br />
<span id="X" class="contentHidden">X</span>
<span id="Y" class="contentVisible displayNone">Y</span>
<span id="Z" class="contentVisible displayNone">Z</span>

$('input[name=switch]').change(function() {
    var selectedVal = this.value;
    $(".contentVisible").each(function() {
        $(this).toggleClass('displayNone', this.id != selectedVal);
    });                                                    
});

The key point to note here is that you can utilize the second parameter in .toggleClass() to determine whether the class should be added or removed.

Answer №5

Assign a common class to all text spans, but give each one a unique ID:

<span class="text-span" id="span_1">Text 1</span>
<span class="text-span hidden" id="span_2">Text 2</span>
<span class="text-span hidden" id="span_3">Text 3</span>

Hide all the text spans initially and then display the desired one:

function showText(id) {
    $(".text-span").hide();
    $("#" + id).show();
}

Update:

To prevent flickering, you can also utilize jQuery's not selector:

$(".text-span").not("#" + id).hide();
$("#" + id).show();

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