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Node.js:
What is the difference between callback and promise?
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What is the difference between callback and promise?
Callback
— function.
Promise
— object.
javascript
Копировать
1
readFile
(
(
err
,
data
)
=>
{
}
)
;
2
new
Promise
(
(
resolve
)
=>
{
}
)
;
Callback
— nested.
Promise
— chainable.
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