在Javascript中从字符串生成哈希

const crypto = require('crypto');

function hashString(str) {
  const hash = crypto.createHash('sha256');
  hash.update(str);
  return hash.digest('hex');
}

const myString = 'Hello, World!';
const myHash = hashString(myString);

console.log(myHash); // 输出哈希值

async function hashString(str) {
  const encoder = new TextEncoder();
  const data = encoder.encode(str);
  const hashBuffer = await crypto.subtle.digest('SHA-256', data);
  const hashArray = Array.from(new Uint8Array(hashBuffer));
  const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join('');
  return hashHex;
}

const myString = 'Hello, World!';
hashString(myString).then(hash => {
  console.log(hash); // 输出哈希值
});