0e688bba0c
part of #38 1. observe DOM mutations in shadow DOM 2. rebuild DOM mutations in shadow DOM
84 lines
2.0 KiB
HTML
84 lines
2.0 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Shadow DOM Observer</title>
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<style>
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.my-element {
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margin: 0 0 1rem 0;
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}
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iframe {
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border: 0;
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width: 100%;
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padding: 0;
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}
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body {
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max-width: 400px;
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margin: 1rem auto;
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padding: 0 1rem;
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font-family: 'comic sans ms';
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}
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</style>
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</head>
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<body>
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<p>
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Lorem ipsum dolor sit amet, consectetur adipisicing elit. Repellat odit
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officiis necessitatibus laborum asperiores et adipisci dolores corporis,
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vero distinctio voluptas, suscipit commodi architecto, aliquam fugit.
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Nesciunt labore reiciendis blanditiis!
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</p>
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<div class="my-element">
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<!-- Also could be a
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<custom-element />
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-->
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</div>
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<p>
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Lorem ipsum dolor sit amet, consectetur adipisicing elit. Repellat odit
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officiis necessitatibus laborum asperiores et adipisci dolores corporis,
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vero distinctio voluptas, suscipit commodi architecto, aliquam fugit.
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Nesciunt labore reiciendis blanditiis!
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</p>
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<script>
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let content = `
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<style>
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body { /* for fallback iframe */
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margin: 0;
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}
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p {
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border: 1px solid #ccc;
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padding: 1rem;
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color: red;
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font-family: sans-serif;
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}
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</style>
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<p>Element with Shadow DOM</p>
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`;
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let myElements = document.querySelectorAll('.my-element');
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if (document.body.attachShadow) {
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myElements.forEach((el) => {
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var shadow = el.attachShadow({
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mode: 'open',
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});
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shadow.innerHTML = content;
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});
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} else {
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let newiframe = document.createElement('iframe');
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newiframe.srcdoc = content;
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myElements.forEach((el) => {
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let parent = el.parentNode;
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parent.replaceChild(newiframe, el);
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});
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}
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</script>
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</script>
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</body>
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</html>
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