TimeExtent

AMD: require(["esri/TimeExtent"], (TimeExtent) => { /* code goes here */ });
ESM: import TimeExtent from "@arcgis/core/TimeExtent";
Class: esri/TimeExtent
Inheritance: TimeExtent Accessor
Since: ArcGIS API for JavaScript 4.11

A period of time with a definitive start and end date. Time extent is used to display or query features that fall within the specified time period. To represent an instant of time, set the start and end times to the same date.

When creating a JavaScript Date, be mindful that most constructors will create a date with respect to your local timezone rather than UTC (i.e. universal time). To create a date with respect to UTC, use the UTC method on the Date object.

Example:
// Represents the data for the month of Jan, 1970
const timeExtent = new TimeExtent({
  start: new Date(Date.UTC(1970, 0, 1, 6, 30)),
  end: new Date(Date.UTC(1970, 0, 31, 6, 30))
});

Constructors

new TimeExtent(properties)
Parameter:
properties Object
optional

See the properties for a list of all the properties that may be passed into the constructor.

Example:
// Typical usage
// Represents the data for the month of Jan, 1970
const timeExtent = new TimeExtent({
  start: new Date(Date.UTC(1970, 0, 1, 6, 30)),
  end: new Date(Date.UTC(1970, 0, 31, 6, 30))
});

Property Overview

Any properties can be set, retrieved or listened to. See the Working with Properties topic.
Show inherited properties Hide inherited properties
Name Type Summary Class
Stringmore details

The name of the class.

more detailsAccessor
Datemore details

The end time of the time extent.

more detailsTimeExtent
Datemore details

The start time of the time extent.

more detailsTimeExtent

Property Details

declaredClass Stringreadonly inherited

The name of the class. The declared class name is formatted as esri.folder.className.

end Date

The end time of the time extent.

Default Value:null
start Date

The start time of the time extent.

Default Value:null

Method Overview

Name Return Type Summary Class
TimeExtentmore details

Creates a deep clone of TimeExtent object.

more detailsTimeExtent
TimeExtentmore details

Expands the TimeExtent so that the start and end dates are rounded down and up, respectively, to the parsed time unit.

more detailsTimeExtent
*more details

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product.

more detailsTimeExtent
TimeExtentmore details

Returns the time extent resulting from the intersection of a given time extent and parsed time extent.

more detailsTimeExtent
Objectmore details

Converts an instance of this class to its ArcGIS portal JSON representation.

more detailsTimeExtent
TimeExtentmore details

Returns the time extent resulting from the union of the current time extent and a given time extent.

more detailsTimeExtent

Method Details

clone(){TimeExtent}

Creates a deep clone of TimeExtent object.

Returns:
Type Description
TimeExtent A new instance of a TimeExtent object equal to the object used to call .clone().
expandTo(unit){TimeExtent}
Since: ArcGIS API for JavaScript 4.18

Expands the TimeExtent so that the start and end dates are rounded down and up, respectively, to the parsed time unit.

Parameter:
unit String

The time unit to align the start and end dates.

Possible Values:"milliseconds"|"seconds"|"minutes"|"hours"|"days"|"weeks"|"months"|"years"|"decades"|"centuries"

Returns:
Type Description
TimeExtent A new expanded TimeExtent.
See also:
Examples:
// Expand a time extent to a decade.
const extent = new TimeExtent({
  start: new Date(2012, 3, 5),
  end: new Date(2019, 0, 4)
});
const decade = extent.expandTo("decades");
// decade is: 1/1/2010 to 1/1/2020
// Expand a time extent to the nearest month.
const extent = new TimeExtent({
  start: new Date(2012, 3, 5),
  end: new Date(2019, 0, 4)
});
const expandToMonth = extent.expandTo("months");
// expandToMonth is: 4/1/2012 to 2/1/2019
fromJSON(json){*}static

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Parameter:
json Object

A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects.

Returns:
Type Description
* Returns a new instance of this class.
intersection(timeExtent){TimeExtent}
Since: ArcGIS API for JavaScript 4.12

Returns the time extent resulting from the intersection of a given time extent and parsed time extent. Returns a timeExtent with undefined values for start and end properties if the two time extents do not intersect.

Parameter:
timeExtent TimeExtent

The time extent to be intersected with the time extent on which intersection() is being called on.

Returns:
Type Description
TimeExtent The intersecting time extent between two time extents.
Example:
// get the intersecting timeExtent between view.timeExtent and
// layer view filter's timeExtent
const timeExtent = view.timeExtent.intersection(layerView.effect.filter.timeExtent);
if (timeExtent){
  console.log("time intersection", timeExtent);
  const query = layerView.createQuery();
  query.timeExtent = timeExtent;
  layerView.queryFeatures(query).then(function(results){
    console.log(results.features.length, " are returned for intersecting timeExtent");
  });
}
toJSON(){Object}

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.

Returns:
Type Description
Object The ArcGIS portal JSON representation of an instance of this class.
union(timeExtent){TimeExtent}
Since: ArcGIS API for JavaScript 4.18

Returns the time extent resulting from the union of the current time extent and a given time extent.

Parameter:
timeExtent TimeExtent

The time extent to be unioned with.

Returns:
Type Description
TimeExtent The resulting union of the current time extent and the given time extent.
Example:
// Return the union of two time extents. One from 1990 to 2000 and the second from 2010 to 2020.
const decade1 = new TimeExtent({
  start: new Date(1990, 0, 1),
  end: new Date(2000, 0, 1)
});
const decade2 = new TimeExtent({
  start: new Date(2010, 0, 1),
  end: new Date(2020, 0, 1)
});
const union = decade1.union(decade2);
console.log(`The unioned extent starts from year ${union.start.getFullYear()} to ${union.end.getFullYear()}`);
// output: "The unioned extent starts from year 1990 to 2020"

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