isNull() – EFS

isNull() Utility Functions

The isNull() function compares a value to the null value and returns true if the value is equal to null and false otherwise.

Syntax

isNull ( Value )

Parameters

Parameter:	Description:	Default:
Value	Required. A value or variable to be compared to null.	n/a

Return Value(s)

Returns Boolean (true/false)

Notes

N/A

Code Examples

function main(){
	var study = sma(20);
	var nSMA = study.getValue(0);
	if (isNull(nSMA)) 
	    setBarBgColor(Color.yellow);
	return nSMA;
}