Prevents an expression from returning a value.
Syntax
void expression
Remarks
The expression argument is any valid JavaScript expression.
The void operator evaluates its expression and returns undefined. It is useful in situations where an expression should be evaluated but you do not want the results visible to the rest of the script.
Requirements
Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported Store apps (Windows 8 and Windows Phone 8.1). See Version Information.