From 37be50f0c7cd8c5d0919943ffc2302e3f9506174 Mon Sep 17 00:00:00 2001
From: weishuping <weishp3@yonyou.com>
Date: Thu, 30 Aug 2018 10:34:00 +0800
Subject: [PATCH] =?UTF-8?q?bind=E9=97=AE=E9=A2=98=E8=AE=B0=E5=BD=95?=
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---
 somequestion.js | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 somequestion.js

diff --git a/somequestion.js b/somequestion.js
new file mode 100644
index 00000000..b56ee502
--- /dev/null
+++ b/somequestion.js
@@ -0,0 +1,33 @@
+//您好 最近很认真的再看你写的深入系列。在bind时候 发现了一个问题
+var obj = {
+    value: '123'
+}
+function bar(name, age) {
+    return {
+        name: name,
+        age: age,
+        value: this.value
+    }
+}
+// 第四版
+Function.prototype.bind2 = function (context) {
+
+    var self = this;
+    var args = Array.prototype.slice.call(arguments, 1);
+
+    var fNOP = function () {};
+
+    var fbound = function () {
+        var bindArgs = Array.prototype.slice.call(arguments);
+        self.apply(this instanceof self ? this : context, args.concat(bindArgs));
+    }
+    fNOP.prototype = this.prototype;
+    fbound.prototype = new fNOP();
+    return fbound;
+
+}
+
+bar.bind2(obj)() //undefined
+bar.bind(obj)() //{name: undefined, age: undefined, value: "123"}
+
+//两者结果有差异，其原因是在fbound中实现之后，没有返回该函数。如有考虑不正确的地方，还望指正
\ No newline at end of file