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var
x = 3;var
foo = { x: 2, baz: { x: 1, bar: function() { return
this.x; } }}var
go = foo.baz.bar;alert(go()); //3alert(foo.baz.bar()); //1 |
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var
x = 4, obj = { x: 3, bar: function() { var
x = 2; (function() { var
x = 1; alert(this.x); })() } };obj.bar(); //4 |
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3 |
var
foo = function
bar() {alert(typeof
bar);};alert(typeof
bar); //undefined ie8以下是functionfoo(); //function |
原文：http://www.cnblogs.com/positive/p/3586448.html