等待NodeJS和Puppeteer中的变量

async function waitForVariableValue(targetVariable, targetValue) {
  while (targetVariable !== targetValue) {
    // 等待一定时间再继续检查变量值
    await new Promise(resolve => setTimeout(resolve, 1000));
  }
  
  // 变量值达到目标值后继续执行后续逻辑
  console.log('Variable value reached the target value');
}

async function main() {
  let variable = 'initial value';

  setTimeout(() => {
    variable = 'target value';
  }, 5000);

  console.log('Waiting for variable value to reach the target value...');
  await waitForVariableValue(variable, 'target value');

  console.log('Continue with the rest of the code');
}

main();

const puppeteer = require('puppeteer');

async function main() {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  
  let variable = null;

  page.on('console', async msg => {
    if (msg.text().startsWith('Target value:')) {
      variable = msg.text().split(':')[1].trim();
      await waitForVariableValue(variable, 'target value');
    }
  });

  await page.evaluate(() => {
    console.log('Target value: target value');
  });

  console.log('Continue with the rest of the code');
  
  await browser.close();
}

main();

async function waitForVariableValue(targetVariable, targetValue) {
  while (targetVariable !== targetValue) {
    await page.waitFor(1000);
  }
  
  console.log('Variable value reached the target value');
}