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puppeteer/docs
Yaniv Efraim f6393d876e docs(api.md): mention that page.$$eval and frame.$$eval return arrays (#2595)
Docs about `page.$$eval` and `frame.$$eval` are not accurate and might be confusing. `document.querySelectorAll` returns `NodeList`, while `frame.$$eval` is actually doing `Array.from(querySelectorAll(selector))`, which actually returns an array. 

This makes things this possible:

`await page.$$eval('div', divs => divs.map...)` 

This patch fixes docs to mention that $$eval is actually performing:

`Array.from(querySelectorAll(selector))`

Which will let the user understand that the element he receives is an array, and not a NodeList.
2018-05-25 17:28:13 -07:00
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