Can you explain why that happens? I'm new to ES6 and learned that let has block scope. When used in the for loop, in conjunction with setTimeOut set to 1000, you would think the console.log would run every 1000 ms for each console.log. But this doesn't happen. When I tried it, the sequence of console.logs appear all at once after 1000 ms. Why does that happen? Is it because setTimeOut, when called 10 times, gets pushed to the stack, then after 1000 ms the stack does its thing and all 10 calls are executed simultaneously?
If you take out the setTimeOut and just do console.log within the for (var i loop you get the correct result as well.
Akash - this is the local variable I was trying to describe: jsfiddle.net/e7gyc5ts/1/ (I needed an IIFE to solve a problem that is better solved by let)
You are wrong, if you use
for(let iinstead offor(var iit will print 0 to 9 correctly. jsfiddle.net/uh86qx1v/1/Can you explain why that happens? I'm new to ES6 and learned that
lethas block scope. When used in the for loop, in conjunction with setTimeOut set to 1000, you would think the console.log would run every 1000 ms for each console.log. But this doesn't happen. When I tried it, the sequence of console.logs appear all at once after 1000 ms. Why does that happen? Is it because setTimeOut, when called 10 times, gets pushed to the stack, then after 1000 ms the stack does its thing and all 10 calls are executed simultaneously?If you take out the setTimeOut and just do console.log within the
for (var iloop you get the correct result as well.Yup, you're correct. The callbacks are registered very close to each other - they're all queued up to run at basically the same time.
Akash - this is the local variable I was trying to describe: jsfiddle.net/e7gyc5ts/1/ (I needed an IIFE to solve a problem that is better solved by
let)github.com/ufocoder/javascript.int...
@hiattzhao youtu.be/Nzokr6Boeaw