compare object based on Halim's homework

remarcmij · remarcmij · commit 86b6c1c6d7f6 · 2017-07-20T12:08:26.000+02:00
diff --git a/Week4/equal.js b/Week4/equal.js
@@ -0,0 +1,51 @@
+'use strict';
+
+const obj1 = {
+  a: '1',
+  b: 'this is the letter b',
+  f: {
+    foo: 'what is a foo anyway',
+    bar: [1, 5, '3', 4]
+  }
+};
+
+const obj2 = {
+  a: 1,
+  b: 'this is the letter b',
+  f: {
+    foo: 'what is a foo anyway',
+    bar: [1, 5, 3, 4]
+  }
+};
+
+function equal(a, b, mode) {
+  const eq = mode === 'strict' ? a === b : a == b;
+  if (eq) {
+    return true;
+  }
+
+  if (a && b &&
+    typeof a == 'object' &&
+    typeof b == 'object' &&
+    Object.keys(a).length == Object.keys(b).length) {
+
+    const keys = Object.keys(a);
+    for (const key of keys) {
+      if (b.hasOwnProperty(key)) {
+        const aValue = a[key];
+        const bValue = b[key];
+        if (!equal(aValue, bValue, mode)) {
+          return false;
+        }
+      } else {
+        return false;
+      }
+    }
+
+    return true;
+  }
+  return false;
+};
+
+console.log('objects are equal: ' + equal(obj1, obj2));
+console.log('objects are strictly equal: ' + equal(obj1, obj2, 'strict'));
