Lookup Functions

▸ at() (opens new window)

Retrieves an item from an array.

▸ in() (opens new window)

Determines whether an item exists in an array or a substring exists in a string.

▸ index-of() (opens new window)

Returns the first position at which an item can be found in an array or a substring can be found in a string, or -1 if the input cannot be found. Accepts an optional index from where to begin the search.

▸ slice() (opens new window)

Returns an item from an array or a substring from a string from a specified start index, or between a start index and an end index if set. The return value is inclusive of the start index but not of the end index.

▸ get() (opens new window)

Retrieves a property value from the current feature's properties, or from another object if a second argument is provided. Returns null if the requested property is missing.

▸ has() (opens new window)

Tests for the presence of an property value in the current feature's properties, or from another object if a second argument is provided.

▸ length() (opens new window)

Gets the length of an array or string.