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void Operator (JavaScript)

Prevents an expression from returning a value.

void expression

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.

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.

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