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1 function fn1(){console.log(1);} 2 fn1();//2 3 function fn1(){console.log(2);} 4 fn1();//2
1 function fn1(){console.log(1);} 2 fn1();//2 3 function fn1(){console.log(2);} 4 fn1();//2 5 var fn1 = function (){console.log(3);} 6 fn1();//3
1 function fn1(){console.log(1);} 2 fn1();//4 3 function fn1(){console.log(2);} 4 fn1();//4 5 var fn1 = function (){console.log(3);} 6 fn1();//3 7 function fn1(){console.log(4);} 8 fn1();//3
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原文地址：http://www.cnblogs.com/sxshijingjing/p/5190446.html
