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HTML

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CSS

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <h1>A Button with an SVG Icon</h1>

<p>The following buttons are examples on how to make a button fully accessible.</p>

<h2>An inaccessible Button – Bad Example</h2>

<p>The first example shows an <em>inaccessible</em> button and should <strong>not be used</strong>! The button misses any textual explanation on what it is going to do on activation and the icon alone is not helpful for people without sight and also for those, who will not recognize its meaning.</p>

<button type="button">
    <svg viewBox="0 0 10 10"
         height="10"
         width="10"
         role="img"
         class="svg-icon"
         focusable="false">
        <path d="m1 7h8v2h-8zm0-3h8v2h-8zm0-3h8v2h-8z"/>
    </svg>
</button>

<h2>An accessible Button – Good Example</h2>

<p>Here we provide non-sighted users with a textual explanation in form of a title text inside the SVG. This text will be available to assistive technology and in Firefox, users with sight can hover over the button to see a tooltip with the text inside.</p>

<button type="button">
    <svg class="svg-icon"
         height="10"
         width="10"
         viewBox="0 0 10 10"
         aria-labelledby="button-label"
         focusable="false">
        <title id="button-label">Menu</title>
        <path d="m1 7h8v2h-8zm0-3h8v2h-8zm0-3h8v2h-8z"/>
    </svg>
</button>

<h2>An accessible Button – Good Example</h2>

<p>In this example we moved the text from the SVG to a visually hidden span element inside the button. This will also be available to assistive technology, just like above, and invisible to sighted users.</p>

<button type="button">
    <svg class="svg-icon"
         role="img"
         height="10"
         width="10"
         viewBox="0 0 10 10"
         aria-hidden="true"
         focusable="false">
        <path d="m1 7h8v2h-8zm0-3h8v2h-8zm0-3h8v2h-8z"/>
    </svg>
    <span class="visually-hidden">
        Menu
    </span>
</button>

<h2>An accessible Button – Ideal Example</h2>

<p>In this last example the text is not only accessible to assistive technology but also displayed next to the icon. Thereby we ensure that sighted users not being able to recognize the icon to understand the purpose of the button.</p>

<button type="button">
    Menu
    <svg class="svg-icon"
         role="img"
         height="10"
         width="10"
         viewBox="0 0 10 10"
         aria-hidden="true"
         focusable="false">
        <path d="m1 7h8v2h-8zm0-3h8v2h-8zm0-3h8v2h-8z"/>
    </svg>
</button>
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CSS 

              
                /**
    Note that all these styles are just examplatory.
**/
body {
    font-family: sans-serif;
    line-height: 1.5;
    text-align: center;
    box-sizing: border-box;
    margin: 2em auto;
    max-width: 35em;
    color: #2b2b2b;
    background: #fafafa;
    
    * {
        box-sizing: border-box;
    }
}

h2 {
    margin: 1.5em 0 .5em;
}

p {
    font-size: 1.125em;
    margin: 0 0 .5em;
    
    + p {
        margin-top: 1.5em;
    }
}

button {
    font-size: 1.25em;
    font-weight: bold;
    line-height: 1;
    text-transform: uppercase;
    position: relative;
    border: .1875em solid;
    padding: 1em;
    color: rebeccapurple;
    background: transparent;
    border-radius: .125em;
    transition: background .3s;
    
    &:hover,
    &:focus {
        color: white;
        background: rebeccapurple;
        border-color: rebeccapurple;
    }
    
    &:active {
        top: .08em;
    }
}

.svg-icon {
    /* Place the icon on the text baseline. */
    position: relative;
    top: .125em;

    /* Prevent the icon from shrinking inside a flex container. */
    flex-shrink: 0;

    /* Scale the icon to match the font-size of the parent element. */
    height: 1em;
    width: 1em;

    /* Let the icon take whatever color the parent has. */
    fill: currentColor;

    /*
     * If the icon is used on a link, which has a color transition,
     * we can also use a transition on the fill value.
    */
   transition: fill .3s;
}

/* Helper Class to hide text visually but keep it accessible for screen reader or other assistive software. */
.visually-hidden {
    // Move the text out of the flow of the container.
    position: absolute;
    
    // Reduce its height and width to just one pixel.
    height: 1px;
    width: 1px;
    
    // Hide any overflowing elements or text.
    overflow: hidden;
    
    // Clip the box to zero pixels.
    clip: rect(0, 0, 0, 0);
    
    // Text won't wrap to a second line.
    white-space: nowrap;
}
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JS
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