Constants

The following constants are available for your convenience in writing expressions.

Infinity

Function bundle: Core

Represents a value greater than any other number. -Infinity may also be used as a value smaller than any number.

Example

Calculates the maximum of four field values

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var values = [ $feature.field1, $feature.field2, $feature.field3, $feature.field4 ];
var maxValue = -Infinity;

for(var i in values){
  maxValue = IIF(values[i] > maxValue, values[i], maxValue);
}

return maxValue;

PI

Function bundle: Core

The value of a circle's circumference divided by its diameter, approximately 3.14159.

Example

Returns the area of a circle feature

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var r = $feature.radius;
PI * r * r;

TextFormatting.BackwardSlash

Function bundle: Core

Inserts a backslash character \ into the text.

Example

Returns '\\serverName\foo\bar'

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TextFormatting.BackwardSlash + TextFormatting.BackwardSlash + $feature.FILE_PATH

TextFormatting.DoubleQuote

Function bundle: Core

Inserts a double quote character " into the text.

Example

Returns 'Nicholas "Nick" Anderson'

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$feature.NAME + " " + TextFormatting.DoubleQuote + $feature.ALIAS + TextFormatting.DoubleQuote + " " + $feature.SURNAME

TextFormatting.ForwardSlash

Function bundle: Core

Inserts a forward slash character / into the text.

Example

Returns '151/low'

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$feature.POP_DENSITY + TextFormatting.ForwardSlash + $feature.CLASS

TextFormatting.NewLine

Function bundle: Core

Inserts a new line, or line break, into the text. Multi-line labels are NOT supported in the ArcGIS API 3.x for JavaScript nor in the ArcGIS Online map viewer.

Example

Returns "T2N R1W"

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"T" + $feature.TOWNSHIP + TextFormatting.NewLine + "R" + $feature.RANGE

TextFormatting.SingleQuote

Function bundle: Core

Inserts a single quote character ' into the text.

Example

Returns "Nicholas 'Nick' Anderson"

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$feature.NAME + " " + TextFormatting.SingleQuote + $feature.ALIAS + TextFormatting.SingleQuote + " " + $feature.SURNAME