How to read React.Children.map api notation?
Looking at the code for React.Children.map, it looks like the function takes up to 3 args.
The api doc for React.Children.map shows
React.Children.map(children, function[(thisArg)])
If it can take 3 args I expected to see 2 commas in there somewhere.
My question is
How do you read React.Children.map(children, function[(thisArg)]) in plain english?
So far I have "React.Children.map is a function that..."
reactjs
asked Nov 10 '18 at 19:00
psalaetspsalaets
58227
add a comment |
Looking at the code for React.Children.map, it looks like the function takes up to 3 args.
The api doc for React.Children.map shows
React.Children.map(children, function[(thisArg)])
If it can take 3 args I expected to see 2 commas in there somewhere.
My question is
How do you read React.Children.map(children, function[(thisArg)]) in plain english?
So far I have "React.Children.map is a function that..."
reactjs
asked Nov 10 '18 at 19:00
psalaetspsalaets
58227
add a comment |
Looking at the code for React.Children.map, it looks like the function takes up to 3 args.
The api doc for React.Children.map shows
React.Children.map(children, function[(thisArg)])
If it can take 3 args I expected to see 2 commas in there somewhere.
My question is
How do you read React.Children.map(children, function[(thisArg)]) in plain english?
So far I have "React.Children.map is a function that..."
reactjs
asked Nov 10 '18 at 19:00
psalaetspsalaets
58227
Looking at the code for React.Children.map, it looks like the function takes up to 3 args.
The api doc for React.Children.map shows
React.Children.map(children, function[(thisArg)])
If it can take 3 args I expected to see 2 commas in there somewhere.
My question is
How do you read React.Children.map(children, function[(thisArg)]) in plain english?
So far I have "React.Children.map is a function that..."
reactjs
reactjs
asked Nov 10 '18 at 19:00
psalaetspsalaets
58227
asked Nov 10 '18 at 19:00
psalaetspsalaets
58227
edited Nov 17 '18 at 16:59
psalaets
asked Nov 10 '18 at 19:00
psalaetspsalaets
58227
asked Nov 10 '18 at 19:00
psalaetspsalaets
58227
asked Nov 10 '18 at 19:00
psalaetspsalaets
58227
58227
add a comment |
add a comment |
1 Answer
1
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function[(thisArg)] isn't a standard denotation. As the documentation states, map
Invokes a function on every immediate child contained within children with this set to thisArg.
Children.map signature is similar to JavaScript Array.prototype.map. There are 3 arguments, 3rd argument is optional this context for callback function if needed.
Children.map is documented better in source code:
/**
* Maps children that are typically specified as `props.children`.
*
* See https://reactjs.org/docs/react-api.html#reactchildrenmap
*
* The provided mapFunction(child, key, index) will be called for each
* leaf child.
*
* @param ?* children Children tree container.
* @param function(*, int) func The map function.
* @param * context Context for mapFunction.
* @return object Object containing the ordered map of results.
*/
function mapChildren(children, func, context) ...
answered Nov 10 '18 at 19:45
estusestus
68.3k21100215
Thanks for taking the time to respond but this doesn't answer my question. Your answer restates things that I already know from reading the docs and looking at the code. I'm not asking how to use React.Children.map but rather, I want to know how the api notation tells me how to use React.Children.map. Thanks
– psalaets
Nov 17 '18 at 17:02
As I mentioned, that this isn't standard notation. The answer explains what it really stands for. You can read it as React.Children.map is a function that accepts children argument, callback function argument and optional thisArg argument that will be used asthiscontext in callback function. Can anyone read it like that without knowing what it stands for? I doubt that.
– estus
Nov 17 '18 at 17:14
alright fair enough ✓
– psalaets
Nov 22 '18 at 17:47
add a comment |
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1 Answer
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1 Answer
1
active
oldest
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active
oldest
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active
oldest
votes
function[(thisArg)] isn't a standard denotation. As the documentation states, map
Invokes a function on every immediate child contained within children with this set to thisArg.
Children.map signature is similar to JavaScript Array.prototype.map. There are 3 arguments, 3rd argument is optional this context for callback function if needed.
Children.map is documented better in source code:
/**
* Maps children that are typically specified as `props.children`.
*
* See https://reactjs.org/docs/react-api.html#reactchildrenmap
*
* The provided mapFunction(child, key, index) will be called for each
* leaf child.
*
* @param ?* children Children tree container.
* @param function(*, int) func The map function.
* @param * context Context for mapFunction.
* @return object Object containing the ordered map of results.
*/
function mapChildren(children, func, context) ...
answered Nov 10 '18 at 19:45
estusestus
68.3k21100215
Thanks for taking the time to respond but this doesn't answer my question. Your answer restates things that I already know from reading the docs and looking at the code. I'm not asking how to use React.Children.map but rather, I want to know how the api notation tells me how to use React.Children.map. Thanks
– psalaets
Nov 17 '18 at 17:02
As I mentioned, that this isn't standard notation. The answer explains what it really stands for. You can read it as React.Children.map is a function that accepts children argument, callback function argument and optional thisArg argument that will be used asthiscontext in callback function. Can anyone read it like that without knowing what it stands for? I doubt that.
– estus
Nov 17 '18 at 17:14
alright fair enough ✓
– psalaets
Nov 22 '18 at 17:47
add a comment |
function[(thisArg)] isn't a standard denotation. As the documentation states, map
Invokes a function on every immediate child contained within children with this set to thisArg.
Children.map signature is similar to JavaScript Array.prototype.map. There are 3 arguments, 3rd argument is optional this context for callback function if needed.
Children.map is documented better in source code:
/**
* Maps children that are typically specified as `props.children`.
*
* See https://reactjs.org/docs/react-api.html#reactchildrenmap
*
* The provided mapFunction(child, key, index) will be called for each
* leaf child.
*
* @param ?* children Children tree container.
* @param function(*, int) func The map function.
* @param * context Context for mapFunction.
* @return object Object containing the ordered map of results.
*/
function mapChildren(children, func, context) ...
answered Nov 10 '18 at 19:45
estusestus
68.3k21100215
Thanks for taking the time to respond but this doesn't answer my question. Your answer restates things that I already know from reading the docs and looking at the code. I'm not asking how to use React.Children.map but rather, I want to know how the api notation tells me how to use React.Children.map. Thanks
– psalaets
Nov 17 '18 at 17:02
As I mentioned, that this isn't standard notation. The answer explains what it really stands for. You can read it as React.Children.map is a function that accepts children argument, callback function argument and optional thisArg argument that will be used asthiscontext in callback function. Can anyone read it like that without knowing what it stands for? I doubt that.
– estus
Nov 17 '18 at 17:14
alright fair enough ✓
– psalaets
Nov 22 '18 at 17:47
add a comment |
function[(thisArg)] isn't a standard denotation. As the documentation states, map
Invokes a function on every immediate child contained within children with this set to thisArg.
Children.map signature is similar to JavaScript Array.prototype.map. There are 3 arguments, 3rd argument is optional this context for callback function if needed.
Children.map is documented better in source code:
/**
* Maps children that are typically specified as `props.children`.
*
* See https://reactjs.org/docs/react-api.html#reactchildrenmap
*
* The provided mapFunction(child, key, index) will be called for each
* leaf child.
*
* @param ?* children Children tree container.
* @param function(*, int) func The map function.
* @param * context Context for mapFunction.
* @return object Object containing the ordered map of results.
*/
function mapChildren(children, func, context) ...
answered Nov 10 '18 at 19:45
estusestus
68.3k21100215
function[(thisArg)] isn't a standard denotation. As the documentation states, map
Invokes a function on every immediate child contained within children with this set to thisArg.
Children.map signature is similar to JavaScript Array.prototype.map. There are 3 arguments, 3rd argument is optional this context for callback function if needed.
Children.map is documented better in source code:
/**
* Maps children that are typically specified as `props.children`.
*
* See https://reactjs.org/docs/react-api.html#reactchildrenmap
*
* The provided mapFunction(child, key, index) will be called for each
* leaf child.
*
* @param ?* children Children tree container.
* @param function(*, int) func The map function.
* @param * context Context for mapFunction.
* @return object Object containing the ordered map of results.
*/
function mapChildren(children, func, context) ...
answered Nov 10 '18 at 19:45
estusestus
68.3k21100215
answered Nov 10 '18 at 19:45
estusestus
68.3k21100215
answered Nov 10 '18 at 19:45
estusestus
68.3k21100215
answered Nov 10 '18 at 19:45
estusestus
68.3k21100215
68.3k21100215
Thanks for taking the time to respond but this doesn't answer my question. Your answer restates things that I already know from reading the docs and looking at the code. I'm not asking how to use React.Children.map but rather, I want to know how the api notation tells me how to use React.Children.map. Thanks
– psalaets
Nov 17 '18 at 17:02
As I mentioned, that this isn't standard notation. The answer explains what it really stands for. You can read it as React.Children.map is a function that accepts children argument, callback function argument and optional thisArg argument that will be used asthiscontext in callback function. Can anyone read it like that without knowing what it stands for? I doubt that.
– estus
Nov 17 '18 at 17:14
alright fair enough ✓
– psalaets
Nov 22 '18 at 17:47
add a comment |
Thanks for taking the time to respond but this doesn't answer my question. Your answer restates things that I already know from reading the docs and looking at the code. I'm not asking how to use React.Children.map but rather, I want to know how the api notation tells me how to use React.Children.map. Thanks
– psalaets
Nov 17 '18 at 17:02
As I mentioned, that this isn't standard notation. The answer explains what it really stands for. You can read it as React.Children.map is a function that accepts children argument, callback function argument and optional thisArg argument that will be used asthiscontext in callback function. Can anyone read it like that without knowing what it stands for? I doubt that.
– estus
Nov 17 '18 at 17:14
alright fair enough ✓
– psalaets
Nov 22 '18 at 17:47
Thanks for taking the time to respond but this doesn't answer my question. Your answer restates things that I already know from reading the docs and looking at the code. I'm not asking how to use React.Children.map but rather, I want to know how the api notation tells me how to use React.Children.map. Thanks
– psalaets
Nov 17 '18 at 17:02
Thanks for taking the time to respond but this doesn't answer my question. Your answer restates things that I already know from reading the docs and looking at the code. I'm not asking how to use React.Children.map but rather, I want to know how the api notation tells me how to use React.Children.map. Thanks
– psalaets
Nov 17 '18 at 17:02
As I mentioned, that this isn't standard notation. The answer explains what it really stands for. You can read it as React.Children.map is a function that accepts children argument, callback function argument and optional thisArg argument that will be used as
this context in callback function. Can anyone read it like that without knowing what it stands for? I doubt that.– estus
Nov 17 '18 at 17:14
As I mentioned, that this isn't standard notation. The answer explains what it really stands for. You can read it as React.Children.map is a function that accepts children argument, callback function argument and optional thisArg argument that will be used as
this context in callback function. Can anyone read it like that without knowing what it stands for? I doubt that.– estus
Nov 17 '18 at 17:14
alright fair enough ✓
– psalaets
Nov 22 '18 at 17:47
alright fair enough ✓
– psalaets
Nov 22 '18 at 17:47
add a comment |
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