Add grammar basics

tshemsedinov · tshemsedinov · commit 0f55c8af559b · 2017-08-22T17:35:29.000+03:00
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,3 @@
+node_modules
+*.log
+.DS_Store
diff --git a/JavaScript/1-comments.js b/JavaScript/1-comments.js
@@ -0,0 +1,8 @@
+'use strict';
+
+// Single comment
+
+/*
+  Multiline
+  comments
+*/
diff --git a/JavaScript/2-const-let.js b/JavaScript/2-const-let.js
@@ -0,0 +1,14 @@
+'use strict';
+
+console.log({ a });
+
+var a = 5;
+let b = 6;
+const c = 7;
+
+console.log({ a, b, c });
+
+a = 8;
+b = 9;
+
+console.log({ a, b, c });
diff --git a/JavaScript/3-scalar.js b/JavaScript/3-scalar.js
@@ -0,0 +1,11 @@
+'use strict';
+
+const scalar = 5;
+const object1 = { scalar };
+const object2 = object1;
+
+object1.scalar = 6;
+
+console.log({ object1 });
+console.log({ object2 });
+console.dir({ scalar });
diff --git a/JavaScript/4-types.js b/JavaScript/4-types.js
@@ -0,0 +1,22 @@
+'use strict';
+
+const i = 5;
+const s = 'Hello';
+const b = true;
+const f = 10.3;
+
+const o = {
+  name: 'Marcus Aurelius',
+  born: 121,
+  city: 'Roma',
+  position: 'emperor'
+};
+
+const a = ['Athens', 'Roma', 'London', 'Beijing', 'Kiev', 'Riga'];
+
+console.log({ i }, typeof(i));
+console.log({ s }, typeof(s));
+console.log({ b }, typeof(b));
+console.log({ f }, typeof(f));
+console.log({ o }, typeof(o));
+console.log({ a }, typeof(a));
diff --git a/JavaScript/5-undefined-null-NaN.js b/JavaScript/5-undefined-null-NaN.js
@@ -0,0 +1,19 @@
+'use strict';
+
+// undefined
+
+let u;
+console.log({ u }, typeof(u));
+
+// null
+
+let o = null;
+console.log({ o }, typeof(o));
+
+// null
+
+let n = NaN;
+console.log({ n }, typeof(n));
+
+n = undefined + 1;
+console.log({ n }, typeof(n));

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+node_modules`
	`2`	`+*.log`
	`3`	`+.DS_Store`