bitfishxyz

import React from 'react';
const yellowHOC = WrapperComponent => {
  return class extends React.Component {
    render() {
      <div style={{ backgroundColor: 'yellow' }}>
        <WrapperComponent {...this.props} />
      </div>;
    }
  };
};

bitfishxyz

const promise1 = new Promise((resolve, reject) => {
  const timer1 = setTimeout(() => {
    resolve('success')
  }, 1000)
})
const promise2 = promise1.then(() => {
  throw new Error('error!!!')
})

console.log('promise1', promise1)

bitfishxyz

const promise1 = new Promise((resolve, reject) => {
  const timer1 = setTimeout(() => {
    resolve('success')
  }, 1000)
})
const promise2 = promise1.then(() => {
  throw new Error('error!!!')
})
console.log('promise1', promise1)
console.log('promise2', promise2)

bitfishxyz

const promise1 = Promise.resolve().then(() => {
  console.log('promise1');
  const timer2 = setTimeout(() => {
    console.log('timer2')
  }, 0)
});
const timer1 = setTimeout(() => {
  console.log('timer1')
  const promise2 = Promise.resolve().then(() => {
    console.log('promise2')

bitfishxyz

const timer1 = setTimeout(() => {
  console.log('timer1');
  const promise1 = Promise.resolve().then(() => {
    console.log('promise1')
  })
}, 0)
const timer2 = setTimeout(() => {
  console.log('timer2')
}, 0)
console.log('start')

bitfishxyz

const timer1 = setTimeout(() => {
  console.log('timer1');
const timer3 = setTimeout(() => { 
    console.log('timer3')
  }, 0)
}, 0)
const timer2 = setTimeout(() => {
  console.log('timer2')
}, 0)
console.log('start')

bitfishxyz

const promise = new Promise((resolve, reject) => {
  console.log(1);
  setTimeout(() => {
    console.log("timerStart");
    resolve("success");
    console.log("timerEnd");
  }, 0);
  console.log(2);
});
promise.then((res) => {

bitfishxyz

console.log('start')
setTimeout(() => {
  console.log('setTimeout')
})
Promise.resolve().then(() => {
  console.log('resolve')
})
console.log('end')

bitfishxyz

var p = new Promise(function(resolve, reject){
  resolve(1);
});
p.then(function(value){               //1st then
  console.log(value);
  return Promise.resolve(value*2);
}).then(function(value){              //2nd then
  console.log(value);
  return Promise.resolve(undefined)
}).then(function(value){              //3rd then

bitfishxyz

var p = new Promise(function(resolve, reject){
  resolve(1);
});
p.then(function(value){               //1st then
  console.log(value);
  return value*2;
}).then(function(value){              //2nd then
  console.log(value);
}).then(function(value){              //3rd then
  console.log(value);