摘要：
1. var c = 1; function a () { var c =1; c = c+2; console.log('fn : '+c) }; a();//3 console.log( c) //1 阅读全文
摘要：
1.var c = 1; function c(c){ console.log(c) } c(2) // c is not a function 2. var c = 1; function c (){} console.log(typeof c) //'number' 3. if(!b in wi 阅读全文