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lzcdev / Daily-Front-End-Questions

每日前端面试题、技巧等知识点，记录自己的成长过程
MIT License
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输出什么？（变量提升） #35

Open lzcdev opened 5 years ago

lzcdev commented 5 years ago 
var name = 'Tom';
(function () {
  if (typeof name == 'undefined') {
    var name = 'Jack'
    console.log(name);    
  } else {
    console.log(name);
  }
})();
lzcdev commented 5 years ago

Jack 关键在于var