const Greeters = []for (var i = 0 ; i < 10 ; i++) { Greeters.push(function () { return console.log(i) })}Greeters[0]() // 10Greeters[1]() // 10Greeters[2]() // 10const Greeters = []for (let i = 0 ; i < 10 ; i++) { Greeters.push(function () { return console.log(i) })}Greeters[0]() // 0Greeters[1]() // 1Greeters[2]() // 2第二個(gè)用let后面不應(yīng)該是undefined嗎。。還有為什么Greeters數(shù)組里保存的是[function () { return console.log(i)},function () { return console.log(i)},...,function () { return console.log(i)}]而不是[function () { return console.log(0)},function () { return console.log(1)},...,function () { return console.log(9)}]？
求解這兩個(gè)輸出區(qū)別？
ibeautiful
2019-02-20 18:19:42
