playwright如何处理网页弹框
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发布于 2023-12-07
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在Playwright中，处理网页弹框通常涉及两种主要类型的对话框：alert, confirm 和 prompt。这些对话框可以通过页面上的JavaScript代码触发。你可以使用Playwright提供的方法来监听和操作这些对话框。以下是如何使用Playwright处理这三种不同类型的对话框：Alert：当一个alert对话框出现时，可以使用page.on("dialog")事件处理器来捕获它。然后调用dialog.accept()来接受对话框，或者dialog.dismiss()来拒绝（关闭）对话框。pythonfrom playwright.sync_api import sync_playwrightdef run(playwright): with playwright.chromium.launch(headless=False) as browser: context = browser.new_context() page = context.new_page() # 监听 alert 对话框 page.on("dialog", lambda dialog: dialog.accept()) page.goto("http://example.com") page.evaluate("alert('Hello, world!')") context.close()with sync_playwright() as playwright: run(playwright)Confirm：处理confirm对话框与处理alert对话框类似，但你需要检查对话框的内容以确定它是哪种类型的对话框。使用dialog.accept()或dialog.dismiss()来决定是否接受确认请求。pythonfrom playwright.sync_api import sync_playwrightdef run(playwright): with playwright.chromium.launch(headless=False) as browser: context = browser.new_context() page = context.new_page() def on_dialog(dialog): if "Do you want to confirm?" in dialog.message(): dialog.accept() else: dialog.dismiss() # 监听所有对话框 page.on("dialog", on_dialog) page.goto("http://example.com") page.evaluate("confirm('Do you want to confirm?')") context.close()with sync_playwright() as playwright: run(playwright)Prompt：处理prompt对话框需要提供一个输入值，因为它们通常要求用户提供一些信息。你可以在对话框上调用dialog.accept(value)或dialog.dismiss()，其中value是要传递给对话框的输入值。pythonfrom playwright.sync_api import sync_playwrightdef run(playwright): with playwright.chromium.launch(headless=False) as browser: context = browser.new_context() page = context.new_page() def on_dialog(dialog): if dialog.type == "prompt": dialog.accept("Input value goes here.") else: dialog.dismiss() # 监听所有对话框 page.on("dialog", on_dialog) page.goto("http://example.com") page.evaluate("prompt('Please enter your name:', 'John Doe')") context.close()with sync_playwright() as playwright: run(playwright)请注意，上述示例使用了同步API。如果你想要使用异步API，只需将所有的sync_前缀替换为async_，并在适当的地方使用await关键字。
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