js等待效果

function delay(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
}

// 使用示例
delay(1000).then(() => {
    console.log('等待了1秒');
});

async function doSomethingWithDelay() {
    console.log('开始执行');
    await delay(2000); // 等待2秒
    console.log('2秒后继续执行');
}

doSomethingWithDelay();

// 主线程
const worker = new Worker('worker.js');
worker.postMessage({ data: largeDataSet });
worker.onmessage = function(event) {
    console.log('处理完成:', event.data);
};

// worker.js
self.onmessage = function(event) {
    const data = event.data;
    let result = [];
    for (let i = 0; i < data.length; i++) {
        // 分批处理数据
        if (i % 1000 === 0 && i !== 0) {
            self.postMessage(result);
            result = [];
        }
        result.push(data[i] * 2); // 假设的处理逻辑
    }
    self.postMessage(result);
};