const nunjucks = require('nunjucks')
// nunjucks.configure({ autoescape: true });
// const result = nunjucks.renderString('Hello {{ username }}', { username: 'James' });
// console.log(result)
// 这里的 views 相对路径是受 node 执行路径影响的
nunjucks.configure('views', { autoescape: true });
// var result = nunjucks.render('index.html', { foo: 'bar' });
var result = nunjucks.render('login.html');
console.log(result)
login.html
{% extends "layout.html" %}
{% block body %}
<h1>这是登陆页</h1>
{% endblock %}
{% block script %}
<script>
window.alert('hello login')
</script>
{% endblock %}
layout.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link rel="stylesheet" href="normalize.css">
{% block style %}
{% endblock %}
</head>
<body>
{% include "header.html" %}
{% include "sidebar.html" %}
{% block body %}
{% endblock %}
{% include "footer.html" %}
<script src="jquery.js"></script>
{% block script %}
{% endblock %}
</body>
</html>
还有header和sidebar和foot都是属于布局里的公共样式，block遵循一个萝卜一个坑原则，自己写特殊的部分。
原文：https://www.cnblogs.com/ygjzs/p/12232159.html