I'm looking for a Javascript equivalent of a technique I've been using in PHP. That is, to place even the most basic page setup:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
...in a php file like 'doc_start.php' and then start every page in my site with...
<?php require_once('/path/to/doc_start.php); ?>
Now I need to begin a project that's strictly HTML and JS (no PHP) and want a similar way to avoid duplicating basic, common HTML elements. Obviously, I want to do more than this very basic stuff, like import JQuery in every page, link to a common stylesheet, etc. Again, all easy in PHP, but I'm still kind of a newbie in JS.
I've read about HTML5 includes, but can't seem to find anything that addresses what I want to do