From 1ac918c804ba747dd56eb9a54662fb927eb5d360 Mon Sep 17 00:00:00 2001
From: ruanyf <yifeng.ruan@gmail.com>
Date: Tue, 10 Oct 2017 11:04:41 +0800
Subject: [PATCH] docs(symbol): edit symbol/Symbol.instanceOf

---
 docs/symbol.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/docs/symbol.md b/docs/symbol.md
index 567368a..7e2b351 100644
--- a/docs/symbol.md
+++ b/docs/symbol.md
@@ -492,6 +492,13 @@ class Even {
   }
 }
 
+// 等同于
+const Even = {
+  [Symbol.hasInstance](obj) {
+    return Number(obj) % 2 === 0;
+  }
+};
+
 1 instanceof Even // false
 2 instanceof Even // true
 12345 instanceof Even // false