exists

Description

Returns whether or not a measurement is available.

Input Parameters

Name	Type	Required	Description
name	Text	Yes	Target measurement name
[deviceId]	Text	No	Source IoT device identifier

Returns

Type: Boolean

Returns true if measurement value exists. Otherwise, false is returned.

Examples

// check if bpm measurement value is available
if (iot.exists("bpm") === true)
    debug.log("Measurement exists.");

Remarks

Use this function when you need to test if a measurement value is available.