blog/_includes/extensions/comments/utterances.html
2022-05-05 23:36:54 +08:00

46 lines
1.5 KiB
HTML

<script async
crossorigin="anonymous"
issue-term="{{ site.utterances.issue_term }}"
label="{{ site.utterances.label }}"
{%- if site.utterances.follow_site_theme -%}
onload="initUtterancesTheme()"
{%- endif -%}
repo="{{ site.utterances.repo }}"
src="https://utteranc.es/client.js"
theme="{{ site.utterances.theme }}">
</script>
{%- if site.utterances.follow_site_theme -%}
<script>
const setUtterancesTheme = (dataTheme) => {
const iframe = document.querySelector('.utterances-frame');
if (iframe) {
const utterancesTheme = dataTheme === 'dark' ? 'github-dark' : 'github-light'
const message = {
type: 'set-theme',
theme: utterancesTheme
};
iframe.contentWindow.postMessage(message, 'https://utteranc.es');
}
}
// init theme
const initUtterancesTheme = () => {
const iframe = document.querySelector('.utterances-frame');
if (!iframe) return
iframe.onload = () => {
setUtterancesTheme(document.documentElement.getAttribute('data-theme'))
}
}
// dynamic change
const observer = new MutationObserver((mutationsList, observer) => {
for (let mutation of mutationsList) {
if (mutation.type === 'attributes' && mutation.attributeName === 'data-theme') {
setUtterancesTheme(document.documentElement.getAttribute('data-theme'))
}
}
});
observer.observe(document.documentElement, {attributes: true, childList: false, subtree: false});
</script>
{%- endif -%}