Multiplication assignment (*=)

The multiplication assignment operator (*=) multiplies a variable by the value of the right operand and assigns the result to the variable.


Operator: x *= y
Meaning:  x  = x * y


Using multiplication assignment

// Assuming the following variable
//  bar = 5

bar *= 2     // 10
bar *= 'foo' // NaN


ECMAScript (ECMA-262)
The definition of 'Assignment operators' in that specification.

Browser compatibility

ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
Multiplication assignment (x *= y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100


Full support
Full support

See also