FB.Array

Array related helper methods useful with FB.Data.query.

Methods

indexOf

Get index of item inside an array. Return's -1 if element is not found.

.indexOf(Array arr, Object item)

parameter

arr - Array to look through.

item - Item to locate.

return

Index of item or -1 if element is not found.

merge

Merge items from source into target, but only if they dont exist. Returns the target array back.

.merge(Array target, Array source)

parameter

target - Target array.

source - Source array.

return

Merged Array.

filter

Create an new array from the given array and a filter function.

.filter(Array arr, Function fn)

parameter

arr - Source array.

fn - Filter callback function.

return

Filtered Array.

keys

Create an array from the keys in an object.

.keys(Object obj, Boolean proto)

Example: keys({'x': 2, 'y': 3'}) returns ['x', 'y']

parameters

obj - Source object.

proto - Specify true to include inherited properties.

return

The Array of keys.

map

Create an array by performing transformation on the items in a source array.

.map(Array arr, Function transform)

parameters

arr - Source array.

transform - Transformation function.

return

The transformed Array.

forEach

For looping through Arrays and Objects.

.forEach(Object item, Function fn, Boolean proto)

parameters

item - an Array or an Object

fn - the callback function for iteration.

proto - indicate if properties from the prototype should be included

returns