subarray() method returns a new TypedArray
on the same
ArrayBuffer store and with the same element types as for this
TypedArray object. The begin offset is inclusive and the end
offset is exclusive. TypedArray is one of the typed
The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
- Element to begin at. The offset is inclusive. The whole array will be included in the new view if this value is not specified.
- Element to end at. The offset is exclusive. If not specified, all elements from the
one specified by
beginto the end of the array are included in the new view.
The range specified by
clamped to the valid index range for the current array; if the computed length of the
new array would be negative, it's clamped to zero. If either
end is negative, it refers to
an index from the end of the array instead of from the beginning.
Also note that this is creating a new view on the existing buffer; changes to the new object's contents will impact the original object and vice versa.
var buffer = new ArrayBuffer(8); var uint8 = new Uint8Array(buffer); uint8.set([1,2,3]); console.log(uint8); // Uint8Array [ 1, 2, 3, 0, 0, 0, 0, 0 ] var sub = uint8.subarray(0,4); console.log(sub); // Uint8Array [ 1, 2, 3, 0 ]
The definition of 'TypedArray.prototype.subarray' in that specification.
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