Updates for chapter 8 (templates)

Add ejs snippets and fix some ejs API changes

ch08-templates/ejs_snippets/context.js

@@ -0,0 +1,4 @@
+const ejs = require('ejs');
+const template = '<%= message %>';
+const context = { message: 'Hello template!' };
+console.log(ejs.render(template, context));

ch08-templates/ejs_snippets/delimiter.js

@@ -0,0 +1,5 @@
+const ejs = require('ejs');
+ejs.delimiter = '$'
+const template = '<$= message $>';
+const context = { message: 'Hello template!' };
+console.log(ejs.render(template, context));

ch08-templates/ejs_snippets/escape.js

@@ -0,0 +1,4 @@
+const ejs = require('ejs');
+const template = '<%= message %>';
+const context = {message: "<script>alert('XSS attack!');</script>"};
+console.log(ejs.render(template, context));

ch08-templates/ejs_snippets/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "ejs_snippets",
+  "version": "1.0.0",
+  "description": "",
+  "main": "escape.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "ejs": "^2.5.3"
+  }
+}

ch08-templates/listing8_4/index.js

@@ -0,0 +1,10 @@
+const ejs = require('ejs');
+const fs = require('fs');
+const template = fs.readFileSync('./templates/blog_page.ejs', 'utf8');
+
+function blogPage(entries) {
+  const values = { entries };
+  return ejs.render(template, values);
+}
+
+console.log(blogPage([{ title: 'Example', date: new Date(), body: 'Example body' }]));

ch08-templates/listing8_4/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "listing8_4",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "ejs": "^2.5.3"
+  }
+}