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<!-- Have to put SVG first on the page to deal with Safari 6 -->
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="SVGsprites">
<defs>
<g id="icon-search" aria-labeledby="title-search" aria-describedby="desc-search" role="image">
<!-- viewbox: 0 0 512 512 -->
<title id="title-search">Search:</title>
<desc id="desc-search">Type some text to perform a search.</desc>
<path d="M496.1 435.7l-121.3-103.1c-12.5-11.3-25.9-16.5-36.8-16 28.6-33.5 45.9-77 45.9-124.6 0-106-86-192-192-192s-192 86-192 192 86 192 192 192c47.5 0 91.1-17.3 124.6-45.9-0.5 10.8 4.7 24.2 16 36.8l103.1 121.3c17.7 19.6 46.5 21.3 64.1 3.7s15.9-46.4-3.7-64.1zM192 320c-70.7 0-128-57.3-128-128s57.3-128 128-128 128 57.3 128 128-57.3 128-128 128z"
/>
</g>
<g id="icon-search-line" aria-labeledby="title-search-line" aria-describedby="desc-search-line" role="image">
<!-- viewbox: 0 0 1024 1024 -->
<title id="title-search-line">Perform search.</title>
<desc id="desc-search-line">Submit your search term(s).</desc>
<path d="M640 0.2c-212.1 0-384 171.9-384 384 0 64.8 16.2 125.9 44.6 179.5l-267 266.9 0.2 0.2c-20.9 20.5-33.9 48.9-33.9 80.5 0 62.4 50.6 112.9 112.9 112.9 31.5 0 60-13 80.5-33.9l-0.1-0.1 266.9-266.9c53.6 28.5 114.8 44.8 179.7 44.8 212.1 0 384-171.9 384-384s-171.9-384-384-384zM153.4 950.3c-10.3 10.7-24.6 17.4-40.5 17.4-31.2 0-56.5-25.2-56.5-56.4 0-15.9 6.7-30.2 17.4-40.5l-0.3-0.3 258.1-258.1c22.6 30.4 49.4 57.3 79.8 79.9l-258 258zM640 704.2c-176.7 0-320-143.3-320-320 0-176.7 143.3-320 320-320 176.7 0 320 143.3 320 320 0 176.7-143.3 320-320 320zM640 160.2c8.8 0 16 7.2 16 16s-7.2 16-16 16c-106 0-192 86-192 192 0 8.8-7.2 16-16 16s-16-7.2-16-16c0-123.7 100.3-224 224-224z"
/>
</g>
</defs>
</svg>
<header id="Banner">
<a href="#">Fancy Logo!</a>
<form method="get" action="http://adrianroselli.com/">
<div role="search">
<label for="s1" aria-label="Search for:">
<svg viewBox="0 0 512 512" preserveAspectRatio="xMidYMid meet">
<use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-search"></use>
</svg>
</label>
<input type="text" value="" name="s1" id="s1" placeholder="Search…">
<button aria-label="Perform search." type="submit">
<svg viewBox="0 0 1024 1024" preserveAspectRatio="xMidYMid meet">
<use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-search-line"></use>
</svg>
</button>
</div>
</form>
</header>
<main>
<h1>Responsive Progressive Accessible Vanilla Search</h1>
<p>
This is a demo for <a href="http://adrianroselli.com/2015/12/responsive-progressive-accessible-vanilla-search.html">my post of the same name</a>. Not only does the link take you to my post, it also acts as an additional tab-stop on the page so you can play with the keyboard support.
</p>
<!--
<h2>To-do:</h2>
<ul>
<li><strike>Search icon does nothing when clicked in Safari on a Mac, so fix that. (Required a width of at least .07em, WTF?)</strike></li>
<li><strike>Safari 6 doesn't even show the SVG. (required SVG to appear before its display use)</strike></li>
<li><strike>Fix submit SVG to lean on text size. (needed a font-size on the button)</strike></li>
<li><strike>Move search out of content area.</strike></li>
<li><strike>Fix jump on search open.</strike></li>
<li><strike>Get tabbing working in Firefox.</strike></li>
<li><strike>Get it working in IE (10).</strike></li>
<li><strike>Test in Edge.</strike></li>
<li>Figure out why there seem to be extra tab stops in IE, Edge.</li>
<li><strike>Make it functional without any JS (as there is no preceding-sibling selector).</strike></li>
<li><strike>Media queries for small screen (perma-expand).</strike></li>
</ul>
-->
</main>
@import url(https://fonts.googleapis.com/css?family=Lato:400,700);
body {
background-color: #6D695C;
background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAMAAAAoLQ9TAAAACVBMVEUAAAAAAAAAAACDY+nAAAAAA3RSTlMmDQBzGIDBAAAAG0lEQVR42uXIIQEAAADCMHj/0NdkQMws0HEeAqvwAUGJthrXAAAAAElFTkSuQmCC);
font-size: 100%;
color: #333;
font-family: Lato, Arial, sans-serif;
padding: 0;
margin: 0;
}
a:hover, a:focus {
color: #f00;
}
header {
margin: 0;
padding: .5em;
background-color: rgba(0, 0, 0, .5);
}
header::after {
content: "";
display: block;
clear: both;
margin-bottom: 1em;
}
header a {
display: block;
margin: 1em 0 0 1em;
border: 2px solid #c90;
width: 3em;
color: #fff;
background-color: #000;
padding: .25em;
text-align: center;
transform: rotate(-365deg);
transition: all .5s ease-in;
}
@media all and (min-width: 24em) {
header a {
float: left;
font-size: 120%;
}
}
header a:link,
header a:visited,
header a:active,
header a:hover,
header a:focus {
text-decoration: none;
}
header a:hover,
header a:focus {
color: #fff;
transform: rotate(0deg);
border-color: #f00;
outline: none;
}
main {
display: block;
box-sizing: border-box;
width: 90%;
margin: 1em auto;
padding: 1em 2em;
color: #000;
background-color: rgba(204, 204, 204, .7);
border: .07em solid rgba(0, 0, 0, .5);
border-radius: .5em;
}
/* Search bits */
form {
margin: 1em auto;
padding: 0 1em;
}
input[type="text"] {
padding: .5em 0;
font-family: Lato, Arial, sans-serif;
font-size: 100%;
}
@media all and (min-width: 24em) {
header form {
float: right;
}
}
main + svg, body > svg {
display: none;
}
/* Start the search form styles */
[role="search"] {
box-sizing: border-box;
border-radius: .5em;
border: 1px solid transparent;
padding: 0;
/*max-width: 36em;*/
line-height: 1.6;
display: inline-block;
line-height: 0;
transition: all .2s ease-in;
background-color: #fff;
border: 1px solid rgba(0, 0, 0, .5);
width: 100%;
}
[role="search"].notempty {
background-color: #fff;
border: 1px solid rgba(0, 0, 0, .5);
}
[role="search"]::after {
content: "";
display: block;
clear: both;
}
[role="search"] label {
display: inline-block;
overflow: hidden;
margin: 0;
padding: 0 0 .5em 0;
float: left;
cursor: pointer;
transition: all .2s ease-in;
height: 1.5em; /* for IE */
text-indent: -1000px;
width: 0;
}
[role="search"] label svg {
fill: #fff;
width: 1.5em;
margin-top: .5em; /* Must go away for IE. Ugh. */
transition: all .2s ease-in;
}
[role="search"] input[type="text"]:focus ~ label svg,
[role="search"].notempty label svg {
fill: transparent;
}
[role="search"] input[type="text"] {
border: none;
border-radius: .5em;
background-color: transparent;
margin: 0;
padding: .5em .75em;
width: 65%;
width: calc(100% - 4em);
transition: all .2s ease-in;
}
[role="search"] input[type="text"]:focus {
outline: none;
background-color: #fff; /* Needed for non-JS */
}
input::-webkit-input-placeholder {
color: #757575; /* a11y FTW! */
}
input:-ms-input-placeholder {
color: #757575; /* a11y FTW! */
}
input::-moz-placeholder {
color: #757575; /* a11y FTW! */
opacity: 1; /* https://www.quirksmode.org/blog/archives/2015/12/styling_placeho.html */
}
[role="search"] button {
font-size: 90%; /* This allows the width in ems to scale */
width: 2em;
height: auto;
margin: .3em .25em 0 .25em;
border: none;
padding: 0;
background: transparent;
cursor: pointer;
transition: all .2s ease-in;
float: right;
}
[role="search"] button:hover,
[role="search"] button:focus {
outline: none;
}
[role="search"] input[type="text"]:focus ~ button,
[role="search"].notempty button {
float: right;
text-indent: 0;
width: 2em;
display: block;
}
[role="search"] button svg {
display: block;
margin: 0 auto;
padding-right: .2em;
fill: #757575;
width: 100%;
height: auto;
transition: all .2s ease-in;
}
[role="search"] button:hover svg,
[role="search"] button:focus svg {
fill: #00f;
}
[role="search"] input[type="text"]:focus ~ button svg,
[role="search"].notempty button svg {
/*height: 100%;*/
/*width: 4em;*/
}
@media all and (min-width: 24em) {
[role="search"] {
background-color: transparent;
border: 1px solid rgba(0, 0, 0, 0);
width: auto;
}
[role="search"] label {
text-indent: 0;
width: auto;
}
[role="search"] input[type="text"]:focus ~ label,
[role="search"].notempty label {
text-indent: -1000px;
width: 0;
}
[role="search"] input[type="text"] {
width: .07em; /* Must have min width or Safari won't work*/
padding: 0;
float: left;
}
/*[role="search"] label:matches(:hover, :focus) /for/ input, CSS Selectors 4, 13.5. Reference combinators http://www.w3.org/TR/selectors4/#idref-combinators, no support */
[role="search"] input[type="text"]:focus,
[role="search"].notempty input[type="text"] {
padding: .5em .75em;
width: 65%;
width: calc(100% - 5.5em); /* changed from 4em */
}
[role="search"] button {
display: none;
width: 0;
text-indent: -1000px;
}
[role="search"].notempty button:hover svg,
[role="search"].notempty button:focus svg {
fill: #00f; /* Color for when JS fires */
}
[role="search"] button:hover svg,
[role="search"] button:focus svg {
fill: #fff; /* Color for non-JS */
}
}
// Get the search field by ID
var eID = document.getElementById("s1");
// Declare the event object and set it to null
var eventObj = null;
// Add the event listeners I want to track
eID.addEventListener("focus", checkSearch, false);
eID.addEventListener("blur", checkSearch, false);
eID.addEventListener("keydown", checkSearch, false);
function checkSearch(eventObj) {
try {
// Get the event type from the object
eventType = eventObj.type
// Map the tab key to a variable
var TABKEY = 9;
// Get the search input text value
eIDval = eID.value;
// Get the parent element
eIDparent = eID.parentElement;
// Set a class since we are on it
eIDparent.className = "notempty";
// Get the button
eIDbutton = eIDparent.getElementsByTagName('button')[0];
// Set the button tabindex
eIDbutton.setAttribute('tabindex', '0');
// If the text value is not blank
if (eIDval != '') {
// Give it a class that will stay
eIDparent.className = "notempty";
}
// If the text value is blank
else {
// Check if focus has left the input first
if (eventType == 'blur') {
// Set tabindex on button to remove from flow
eIDbutton.setAttribute('tabindex', '-1');
// Remove the class
eIDparent.className = "";
}
// Check if user hit a key
if (eventType == 'keydown') {
// See if the user hit the tab key
if (eventObj.keyCode == TABKEY) {
// Set tabindex on button to remove from flow
eIDbutton.setAttribute('tabindex', '-1');
}
}
}
} catch (e) {
console.log(e);
}
}
Also see: Tab Triggers