avoiding callback hell from javascript
TRANSCRIPT
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Avoiding Callback Hell in JavaScript
Kao YWC#9
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What is a callback function?
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What is a callback function?
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What is callback hell?
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LinearFunction1
Function2
….
Function9
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DependenciesFunction1
Function2 Function2
…
Function9
… … …
Function9 Function9 Function9
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How to avoid callback hell?
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Modularize
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async.waterfall
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LinearFunction1
Function2
….
Function9
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async.auto
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get_data
email_link
make_folder
write_file
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get_data
email_link
make_folder
write_file
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get_data
email_link
make_folder
write_file
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get_data
email_link
make_folder
write_file
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get_data
email_link
make_folder
write_file
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async.each async.series async.parallel async.map async.filter async.every async.queue …. more than 60 functions
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Promise
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Generators
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