refactoring

src/server/web/boot.js

@@ -60,8 +60,6 @@
 		? `?salt=${localStorage.getItem('salt')}`
 		: '';
 
-	const head = document.getElementsByTagName('head')[0];
-
 	const script = document.createElement('script');
 	script.setAttribute('src', `/assets/app.${v}.js${salt}`);
 	script.setAttribute('async', 'true');
@@ -70,7 +68,7 @@
 		renderError('APP_FETCH_FAILED');
 		checkUpdate();
 	});
-	head.appendChild(script);
+	document.head.appendChild(script);
 	//#endregion
 
 	//#region Theme