browser-use--browser-harness
MagMueller
d6942b61fe
Two skill categories, pure markdown, no Python files: - interaction-skills/ — generic browser patterns (dialogs, inputs, etc.) Flat .md files. Agent reads the relevant one before a task. - domain-skills/ — per-site playbooks (tiktok/, linkedin/, etc.) Flat .md files per action (upload, schedule, post). Subfolders for large domains when needed. Starting with: - interaction-skills/dialogs.md — CDP vs JS dialog handling - domain-skills/tiktok/upload.md — full upload flow with gotchas - Placeholder folders for linkedin, spreadshirt, salesforce Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
56 行
1.8 KiB
Markdown
56 行
1.8 KiB
Markdown
# Dialogs
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Browser dialogs (`alert`, `confirm`, `prompt`, `beforeunload`) freeze the JS thread. Two approaches depending on timing.
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## Reactive: dismiss via CDP (preferred)
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Works even when JS is frozen. Handles all dialog types including `beforeunload`.
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```python
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# Dismiss and read the message
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cdp("Page.handleJavaScriptDialog", accept=True) # accept / click OK
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cdp("Page.handleJavaScriptDialog", accept=False) # cancel / click Cancel
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# Read what the dialog said (from buffered CDP events)
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events = drain_events()
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for e in events:
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if e["method"] == "Page.javascriptDialogOpening":
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print(e["params"]["type"]) # "alert", "confirm", "prompt", "beforeunload"
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print(e["params"]["message"]) # the dialog text
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```
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Undetectable by antibot — no JS injected into the page.
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## Proactive: stub via JS
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Prevents dialogs from ever appearing. Good when you expect multiple `alert()`/`confirm()` calls in sequence.
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```python
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capture_dialogs() # replaces window.alert/confirm/prompt with stubs
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# ... do actions that trigger dialogs ...
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msgs = dialogs() # read captured messages
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```
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Tradeoffs:
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- Stubs are lost on page navigation — must re-call `capture_dialogs()`
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- `confirm()` always returns `true` (auto-approves)
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- Detectable by antibot (`window.alert.toString()` reveals non-native code)
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- Does NOT handle `beforeunload`
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## beforeunload specifically
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Fires when navigating away from a page with unsaved changes (forms, editors, upload pages). The page freezes until the user clicks Leave/Stay.
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```python
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# Option A: dismiss after navigating (CDP-level, safe)
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goto("https://new-url.com")
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try:
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cdp("Page.handleJavaScriptDialog", accept=True) # click "Leave"
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except:
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pass # no dialog — normal
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# Option B: prevent before navigating (JS injection, detectable)
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js("window.onbeforeunload=null")
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goto("https://new-url.com")
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```
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