问题 - 如何在 Puppeteer 中通过“RegExp Object??

Question

关于 page.evaluate 方法...

我想使用“替换”方法。 但我不能传递 RegExp 对象....

例子）

const result = await page.evaluate(x => {
return Promise.resolve(8 * x);
}, 7);
console.log(result); // prints "56" <=SUCCESS!!

const result = await page.evaluate(x => {
const a = "apple"
return Promise.resolve(a.replace(x, "banana"));
}, "apple");
console.log(result); // prints "banana" <=SUCCESS!!

const result = await page.evaluate(x => {
const a = "apple"
return Promise.resolve(a.replace(x, "banana"));
}, /apple/);
console.log(result); // prints "apple" <= failure...

谢谢！

Answer 1

您可以使用RegExp()从源代码重新创建：

const result = await page.evaluate((pattern, flags) => {
  const x = RegExp(pattern, flags);
  const a = "apple";
  return Promise.resolve(a.replace(x, "banana"));
}, 'apple', 'i' );
console.log(result);