Methods
around(fn, b4fn, afn, ctxopt) → {function}
- Description:
Wraps a function with before and after functions.
- Source:
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
fn |
function | The function to wrap. |
|
b4fn |
function | The function to execute before the wrapped function. |
|
afn |
function | The function to execute after the wrapped function. |
|
ctx |
Object |
<optional> |
The context to use when calling the functions. |
Returns:
- The wrapped function.
- Type
- function
co(func, concurrencyopt, wtopt) → {function}
Parameters:
| Name | Type | Attributes | Default | Description |
|---|---|---|---|---|
func |
function | 要协作执行的函数 |
||
concurrency |
number |
<optional> |
1
|
允许的最大并发执行数 |
wt |
number |
<optional> |
0
|
每次函数执行后的等待时间（以毫秒为单位） |
Returns:
- 返回一个新的函数，该函数接受原始函数的参数并返回一个promise
- Type
- function
filter(fn, filter, ctx) → {function}
- Description:
Define a function that filters the execution of another function based on a condition
- Source:
Parameters:
| Name | Type | Description |
|---|---|---|
fn |
||
filter |
||
ctx |
Returns:
- Type
- function
wrapper(fn, b4fn, afn, ctx) → {function}
- Description:
wrap a function with before and after functions, function b4fn will be executed before the function, the return value of before function will be passed to the function, function afn will be executed after the function fn;
- Source:
Parameters:
| Name | Type | Description |
|---|---|---|
fn |
||
b4fn |
||
afn |
||
ctx |
Returns:
- Type
- function
Type Definitions
after(fn, afn, ctxopt)
- Source:
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
fn |
function | ||
afn |
function | the function you want to execute after, it will get 2 arguments, the first is the return value of fn, the second is the arguments of fn |
|
ctx |
object |
<optional> |
before(fn, b4fn, ctx)
- Source:
Parameters:
| Name | Type | Description |
|---|---|---|
fn |
function | |
b4fn |
function | |
ctx |
object | Info on the page you want to request |