Use multiple conditions in a single IF statement in an Arcade expression

Summary

In ArcGIS Online, multiple conditions in a single Arcade 'if else' statement are used to simplify tedious workflows that use multiple IF statements. The example below is a script with multiple IF statements.

if ($feature == 1)
{
    "odd"
}
else if ($feature == 2)
{
    "even"
}
else if ($feature == 3)
{
    "odd"
}
else if ($feature == 4)
{
    "even"
}
else if ($feature == 5)
{
    "odd"
}
else if ($feature == 6)
{
    "even"
}

Procedure

To simplify the process, use the logical OR operator (||) to insert multiple conditions in a single IF statement.

1. In ArcGIS Online, on the My Content tab, on the Content page, click the hosted feature layer to open its item details page.
2. On the item details page, click Data and select the layer. In this example, the Pointing layer is selected.
3. Click the field name of the feature layer and select Calculate. In this example, the feature layer, trial, is used.

4. In the Calculate Field window, click Arcade.

5. In the Arcade Calculator window, under Expression, insert the following expression and click OK.

if (($feature.Id==1) || ($feature.Id==3) || ($feature.Id==5) || ($feature.Id==7))
{
    "Odd"
}
else if (($feature.Id==2) || ($feature.Id==4) || ($feature.Id==6))
{
    "Even"
}
else
{
    "none"
}

The following image shows the trial field is populated according to the Arcade expression.