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hijonathan/blm-modal.js

Last active June 4, 2020 19:18
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blm-modal.js
(function(w, doc) {
const cookieKey = 'your_cookie';
let hasCookie = doc.cookie.split(';').filter((c) => {
let [k, _v] = c.split('=');
return k == cookieKey;
}).length > 0;
if (!hasCookie) {
let scriptEl = doc.createElement('script');
scriptEl.src = 'https://cdn.jsdelivr.net/npm/micromodal/dist/micromodal.min.js';
scriptEl.onload = () => {
if (w.MicroModal != null) {
let modalEl = createModal();
let styleEl = createCSS();
// Append elements to the page.
doc.body.appendChild(modalEl);
doc.head.appendChild(styleEl);
// Initialize and show the modal.
w.MicroModal.init({
onShow: (modal) => {
// Set the cookie so we don't see this again.
doc.cookie = `${cookieKey}=true`;
},
onClose: (modal) => {
// Remove everything to avoid poluting CSS/JS on the page.
modalEl.remove();
styleEl.remove();
scriptEl.remove();
}
})
}
}
doc.body.appendChild(scriptEl);
}
function createModal() {
return doc.createRange().createContextualFragment(`
<div class="modal micromodal-slide" id="modal-1" aria-hidden="true">
<div class="modal__overlay" tabindex="-1" data-micromodal-close>
<div class="modal__container" role="dialog" aria-modal="true" aria-labelledby="modal-1-title">
<header class="modal__header">
<h2 class="modal__title" id="modal-1-title">
Micromodal
</h2>
<button class="modal__close" aria-label="Close modal" data-micromodal-close></button>
</header>
<main class="modal__content" id="modal-1-content">
<p>
Try hitting the <code>tab</code> key and notice how the focus stays within the modal itself. Also, <code>esc</code> to close modal.
</p>
</main>
<footer class="modal__footer">
<button class="modal__btn modal__btn-primary">Continue</button>
<button class="modal__btn" data-micromodal-close aria-label="Close this dialog window">Close</button>
</footer>
</div>
</div>
</div>
`);
}
function createCSS() {
let style = doc.createElement('style');
style.type = 'text/css';
let styles = `
.modal {
font-family: -apple-system,BlinkMacSystemFont,avenir next,avenir,helvetica neue,helvetica,ubuntu,roboto,noto,segoe ui,arial,sans-serif;
}
.modal__overlay {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: rgba(0,0,0,0.6);
display: flex;
justify-content: center;
align-items: center;
}
.modal__container {
background-color: #fff;
padding: 30px;
max-width: 500px;
max-height: 100vh;
border-radius: 4px;
overflow-y: auto;
box-sizing: border-box;
}
.modal__header {
display: flex;
justify-content: space-between;
align-items: center;
}
.modal__title {
margin-top: 0;
margin-bottom: 0;
font-weight: 600;
font-size: 1.25rem;
line-height: 1.25;
color: #00449e;
box-sizing: border-box;
}
.modal__close {
background: transparent;
border: 0;
}
.modal__header .modal__close:before { content: "\\2715"; }
.modal__content {
margin-top: 2rem;
margin-bottom: 2rem;
line-height: 1.5;
color: rgba(0,0,0,.8);
}
.modal__btn {
font-size: .875rem;
padding-left: 1rem;
padding-right: 1rem;
padding-top: .5rem;
padding-bottom: .5rem;
background-color: #e6e6e6;
color: rgba(0,0,0,.8);
border-radius: .25rem;
border-style: none;
border-width: 0;
cursor: pointer;
-webkit-appearance: button;
text-transform: none;
overflow: visible;
line-height: 1.15;
margin: 0;
will-change: transform;
-moz-osx-font-smoothing: grayscale;
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
-webkit-transform: translateZ(0);
transform: translateZ(0);
transition: -webkit-transform .25s ease-out;
transition: transform .25s ease-out;
transition: transform .25s ease-out,-webkit-transform .25s ease-out;
}
.modal__btn:focus, .modal__btn:hover {
-webkit-transform: scale(1.05);
transform: scale(1.05);
}
.modal__btn-primary {
background-color: #00449e;
color: #fff;
}
/**************************\
Demo Animation Style
\**************************/
@keyframes mmfadeIn {
from { opacity: 0; }
to { opacity: 1; }
}
@keyframes mmfadeOut {
from { opacity: 1; }
to { opacity: 0; }
}
@keyframes mmslideIn {
from { transform: translateY(15%); }
to { transform: translateY(0); }
}
@keyframes mmslideOut {
from { transform: translateY(0); }
to { transform: translateY(-10%); }
}
.micromodal-slide {
display: none;
}
.micromodal-slide.is-open {
display: block;
}
.micromodal-slide[aria-hidden="false"] .modal__overlay {
animation: mmfadeIn .3s cubic-bezier(0.0, 0.0, 0.2, 1);
}
.micromodal-slide[aria-hidden="false"] .modal__container {
animation: mmslideIn .3s cubic-bezier(0, 0, .2, 1);
}
.micromodal-slide[aria-hidden="true"] .modal__overlay {
animation: mmfadeOut .3s cubic-bezier(0.0, 0.0, 0.2, 1);
}
.micromodal-slide[aria-hidden="true"] .modal__container {
animation: mmslideOut .3s cubic-bezier(0, 0, .2, 1);
}
.micromodal-slide .modal__container,
.micromodal-slide .modal__overlay {
will-change: transform;
}
`;
if (style.styleSheet) {
style.styleSheet.cssText = styles;
} else {
style.appendChild(doc.createTextNode(styles));
};
return style;
}
})(window, window.document);
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