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Copy pathgatsby-ssr.js
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gatsby-ssr.js
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// Configuration is from .generated.config.js which created by gatsby-config.js
// To change value, edit config.yml.
import config from 'config';
import { stripIndent } from 'common-tags';
export const onRenderBody = ({ setPreBodyComponents }) => {
// https://reactjs.org/docs/dom-elements.html#dangerouslysetinnerhtml
// You should insert Facebook SDK directly after the opening <body> tag on each page you want to load it.
// https://developers.facebook.com/docs/javascript/quickstart#loading
return setPreBodyComponents([
<script key={'facebook-sdk'} dangerouslySetInnerHTML={createFacebookSDK()} />
]);
}
function createFacebookSDK() {
return {
__html: stripIndent`
const domContentLoadedCallback = function() {
window.fbAsyncInit = function() {
FB.init({
appId : '${config.features.facebookSDK.appId}',
xfbml : true,
version : 'v11.0'
});
console.log('FB SDK loaded');
};
(function(d, s, id){
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) {return;}
js = d.createElement(s); js.id = id;
js.src = "https://connect.facebook.net/en_US/sdk.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
}; // end callback
if (document.readyState === "complete" || (document.readyState !== "loading" && !document.documentElement.doScroll)) {
domContentLoadedCallback();
} else {
document.addEventListener("DOMContentLoaded", domContentLoadedCallback);
}
`
};
}