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A pro to record some interview questions every week...

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var a = ? if(a == 1 && a == 2 && a == 3){ console.log(1) }

js

```js const promise = Promise.resolve() .then(() => { return promise }) promise.catch(console.error) ```

js
node

```js setInterval(() => { console.log('setInterval') }, 100) process.nextTick(function tick () { process.nextTick(tick) }) ```

node

```js setTimeout(() => { console.log('setTimeout') }, 0) setImmediate(() => { console.log('setImmediate') }) const start = Date.now() while (Date.now() - start < 10); ```

node

```js async function async1(){ console.log('async1 start') await async2() console.log('async1 end') } async function async2(){ console.log('async2') } console.log('script start') setTimeout(function(){ console.log('setTimeout0') },0) setTimeout(function(){ console.log('setTimeout3') },3) setImmediate(() => console.log('setImmediate')); process.nextTick(() => console.log('nextTick'));...

node