Added JavaScript Tree example with single parent link

tshemsedinov · tshemsedinov · commit 96a40c7f1ed5 · 2016-10-12T00:54:43.000+03:00
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,3 @@
+node_modules
+*.log
+.DS_Store
diff --git a/JavaScript/1-parent.js b/JavaScript/1-parent.js
@@ -0,0 +1,26 @@
+'use strict';
+
+function Node(parent, data) {
+  this.parent = parent;
+  this.data = data;
+}
+
+let root = new Node(null, { name: 'root' });
+let n1 = new Node(null, { name: 'n1' });
+
+let n2 = new Node(n1, { name: 'n2' });
+let n3 = new Node(n1, { name: 'n3' });
+let n4 = new Node(n1, { name: 'n4' });
+
+let n21 = new Node(n2, { name: 'n21' });
+let n22 = new Node(n2, { name: 'n22' });
+
+let n31 = new Node(n3, { name: 'n31' });
+let n32 = new Node(n3, { name: 'n32' });
+let n33 = new Node(n3, { name: 'n33' });
+let n34 = new Node(n3, { name: 'n34' });
+
+console.dir(n34);
+console.dir(n34.parent);
+console.dir(n34.parent.parent);
+console.dir(n34.parent.parent.parent);
