import execjs

# 创建JavaScript执行环境
ctx = execjs.compile("""
    function add(a, b) {
        return a + b;
    }
""")

# 调用JS函数
result = ctx.call("add", 3, 5)
print(result)  # 输出8

from py_mini_racer import py_mini_racer

# 创建MiniRacer实例
ctx = py_mini_racer.MiniRacer()

# 执行JS代码
ctx.eval("var a = 1 + 2;")
result = ctx.eval("a * 5")
print(result)  # 输出15

import subprocess
import os

def run_js_code(js_code, is_file=True):
    """
    执行JavaScript代码
    js_code: 可以是JS文件路径，也可以是JS代码字符串
    is_file: 指定js_code是文件路径还是代码字符串
    """
    if is_file:
        # 检查文件是否存在
        if not os.path.isfile(js_code):
            return {
                'success': False,
                'output': '',
                'error': f"JS文件不存在: {js_code}"
            }
        command = ["node", js_code]
    else:
        command = ["node", "-e", js_code]

    try:
        # 执行命令
        process = subprocess.run(
            command,
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            text=True,
            timeout=30  # 设置超时时间
        )
        
        return {
            'success': process.returncode == 0,
            'output': process.stdout.strip(),
            'error': process.stderr.strip()
        }
    except FileNotFoundError:
        return {
            'success': False,
            'output': '',
            'error': "请先安装Node.js并确保已添加到系统PATH"
        }
    except subprocess.TimeoutExpired:
        return {
            'success': False,
            'output': '',
            'error': "JS代码执行超时"
        }

# 使用示例
result = run_js_code("console.log('Hello from Node.js')", is_file=False)
print(result)

import dukpy

js_code = """
function calculate(x) {
    return x * x + 2 * x + 1;
}
calculate(10);
"""

result = dukpy.evaljs(js_code)
print(result)  # 输出121

import js2py

# 直接执行JS代码
js_code = """
function greet(name) {
    return 'Hello, ' + name + '!';
}
"""

# 将JS函数转换为Python函数
greet_function = js2py.eval_js(js_code)
print(greet_function("World"))  # 输出Hello, World!

import asyncio
from playwright.async_api import async_playwright

async def run_in_browser():
    async with async_playwright() as playwright:
        # 启动浏览器
        browser = await playwright.chromium.launch(headless=True)
        page = await browser.new_page()
        
        # 导航到网页或执行JS
        await page.goto("about:blank")
        
        # 在页面上下文中执行JS
        result = await page.evaluate("""
            () => {
                const element = document.createElement('div');
                element.textContent = 'Hello Browser';
                return element.textContent;
            }
        """)
        
        print(f"浏览器执行结果: {result}")
        
        await browser.close()

# 运行
asyncio.run(run_in_browser())