How do search engines crawl Javascript?

Question

If I add random keywords alt attrb to the images using jQuery document.ready (thinking that the page is already loaded), how does it affect search engines?

Will the search engines get the alt attrb that I added with any JavaScript at all? If not how come it can understand Ajax calls sent via JavaScript?

I want to add the alt attrb to images that don't have any in my client's site, in case they forget to put an alt text. jQuery will replace the empty ones with keywords. Is this possible?

Possible duplicate of http://stackoverflow.com/questions/2068571/do-search-engines-process-javascript — apsillers, Jun 09 '12 at 19:43
@pekka http://searchengineland.com/google-can-now-execute-ajax-javascript-for-indexing-99518 — E P, Jun 09 '12 at 21:10

score 0 · Answer 1 · answered Jun 09 '12 at 19:35

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search bots can't read it , if you use JavaScript you need to use server-side language to add keyword to img alt

answered Jun 09 '12 at 19:35

Nassim

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score 0 · Answer 2 · edited May 23 '17 at 12:29

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The is some evidence that search engines execute some javascript, but assume they don't.

Do Google or other search engines execute JavaScript?

Do search engines process Javascript?

http://searchengineland.com/google-io-new-advances-in-the-searchability-of-javascript-and-flash-but-is-it-enough-19881

edited May 23 '17 at 12:29

Community

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answered Jun 09 '12 at 19:38

Cameron Martin

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score 0 · Answer 3 · answered May 04 '13 at 08:30

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until now, Google and other search engines still can not read the script created from a javascript you may need to use other scripts such as php

answered May 04 '13 at 08:30

Edutor

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How do search engines crawl Javascript?

3 Answers3

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