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入门级 难度★ 请分别写出在浏览器控制台执行以下代码的结果 function b(x,y,a){ arguments[2]=10; console.log(a); }; b(1,2,3); function b(x,y,a){ 'use strict' arguments[2]=10; console.log(a); }; b(1,2,3);