import { clone } from "@arcgis/core/core/lang.js";const { clone } = await $arcgis.import("@arcgis/core/core/lang.js");- Since
- ArcGIS Maps SDK for JavaScript 4.0
Provides a utility method for deeply cloning objects with properties that are computed or have their own clone() method, such as
Extent.
Functions
clone
Function
- Type parameters
- <T>
Use this method to deeply clone objects with properties that are computed or have their own clone() method.
For example, if you are creating an object that stores an initial extent and a spatial reference
for your application, you can use esriLang.clone(initialProps) to clone this object so that the extent
and spatialReference are properly cloned.
- Signature
-
clone <T>(elem: T): T
Parameters
| Parameter | Type | Description | Required |
|---|---|---|---|
| elem | T | The object to be cloned. | |
- Returns
- T
A clone of the object.
- Example
- const esriLang = await $arcgis.import("@arcgis/core/core/lang.js");let initialProps = {extent: appExtent, // app initial extentspatialReference: spatReference // app spatialReference};// Creates a deep clone of the objectlet clonedInitialProps = esriLang.clone(initialProps);