几道js面试题
2017-09-14 18:00
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var x=10; function fun(){ console.log(x) } function show(f){ var x=20; (function(){ console.log(x); f(); })() } show(fun); var x = 1; var output = (function() { delete x; return x; })(3); console.log(x); console.log(output); console.log(x); var s='var z=1;'; function z(s){ eval(s); } console.log(z(s)); var z=1,y=z=typeof y; console.log(y,z);