数组#
参考文档，列出了支持表达式中数组数据转换的内置便利函数。
表达式中的JavaScript
你可以在表达式中使用任何JavaScript。更多信息请参阅表达式。
average(): Number #
Returns the value of elements in an array
chunk(size: Number): Array #
Splits arrays into chunks with a length of size
Function parameters#
sizeRequiredNumber
The size of each chunk.
compact(): Array #
Removes empty values from the array.
difference(arr: Array): Array #
Compares two arrays. Returns all elements in the base array that aren't present in arr.
Function parameters#
arrRequiredArray
The array to compare to the base array.
intersection(arr: Array): Array #
Compares two arrays. Returns all elements in the base array that are present in arr.
Function parameters#
arrRequiredArray
The array to compare to the base array.
first(): Array item #
Returns the first element of the array.
isEmpty(): Boolean #
Checks if the array doesn't have any elements.
isNotEmpty(): Boolean #
Checks if the array has elements.
last(): Array item #
Returns the last element of the array.
max(): Number #
Returns the highest value in an array.
merge(arr: Array): Array #
Merges two Object-arrays into one array by merging the key-value pairs of each element.
Function parameters#
arrRequiredArray
The array to merge into the base array.
min(): Number #
Gets the minimum value from a number-only array.
pluck(fieldName?: String): Array #
Returns an array of Objects where keys equal the given field names.
Function parameters#
fieldNameOptionalString
The key(s) you want to retrieve. You can enter as many keys as you want, as comma-separated strings.
randomItem(): Array item #
Returns a random element from an array.
removeDuplicates(key?: String): Array #
Removes duplicates from an array.
Function parameters#
keyOptionalString
A key, or comma-separated list of keys, to check for duplicates.
renameKeys(from: String, to: String): Array #
Renames all matching keys in the array. You can rename more than one key by entering a series of comma separated strings, in the pattern oldKeyName, newKeyName.
Function parameters#
fromRequiredString
The key you want to rename.
toRequiredString
The new name.
smartJoin(keyField: String, nameField: String): Array #
Operates on an array of objects where each object contains key-value pairs. Creates a new object containing key-value pairs, where the key is the value of the first pair, and the value is the value of the second pair. Removes non-matching and empty values and trims any whitespace before joining.
Function parameters#
keyFieldRequiredString
The key to join.
nameFieldRequiredString
The value to join.
Example
Basic usage
1 2 3 4 | |
sum(): Number #
Returns the total sum all the values in an array of parsable numbers.
toJsonString(): String #
Convert an array to a JSON string. Equivalent of
JSON.stringify.
union(arr: Array): Array #
Concatenates two arrays and then removes duplicate.
Function parameters#
arrRequiredArray
The array to compare to the base array.
unique(key?: String): Array #
Remove duplicates from an array.
Function parameters#
keyOptionalString
A key, or comma-separated list of keys, to check for duplicates.
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