js中容易掉坑的幾道面試題

今天看了幾道面試題，有點易錯，嗯，整理出來，你們一塊兒看嘍html 一、看題：web (function(){ var a = b = 3; })(); console.log("a defined? " + (typeof a !== 'undefined'));//a defined? false console.log("b defined? " +

>>阅读原文<<