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Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The static SIMD.%type%.and() method returns a new instance with the logical AND of the lane values (a & b). This operation exists only on integer and boolean SIMD types.


SIMD.Int8x16.and(a, b)
SIMD.Int16x8.and(a, b)
SIMD.Int32x4.and(a, b)

SIMD.Uint8x16.and(a, b)
SIMD.Uint16x8.and(a, b) 
SIMD.Uint32x4.and(a, b)

SIMD.Bool8x16.and(a, b) 
SIMD.Bool16x8.and(a, b) 
SIMD.Bool32x4.and(a, b)
SIMD.Bool64x2.and(a, b)


An instance of a SIMD type.
Another instance of a SIMD type.

Return value

A new corresponding SIMD data type with the logical AND of the lane values (a & b).


The bitwise AND operation only yields 1, if both a and b are 1. The truth table for the AND operation is:

a b a & b
0 0 0
0 1 0
1 0 0
1 1 1

For example, a bitwise AND of 5 & 1 results in 0001 which is 1 in decimal.

5  0101
1  0001
1  0001


Bitwise AND of two Int32x4

var a = SIMD.Int32x4(1, 2, 4, 8);
var b = SIMD.Int32x4(5, 5, 5, 5);
SIMD.Int32x4.and(a, b);
// Int32x4[1, 0, 4, 0]


Specification Status Comment
The definition of 'SIMDConstructor.and' in that specification.
Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support Nightly build No support No support No support
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support No support Nightly build No support No support No support

See also

Document Tags and Contributors

 Contributors to this page: fscholz
 Last updated by: fscholz,