Return the kind of typed array this is. This can be used in conjunction withjs_typed_array_from_kind to create a typed array of the same kind.

Get the length of the array.

Same asarray.length in JavaScript.

Check if the array is empty, i.e. thelength is zero.

CallsTypedArray.prototype.at().

Returns theArrayBuffer referenced by this typed array at construction time.

CallsTypedArray.prototype.buffer().

§Examples

letcontext =&mutContext::default();letarray_buffer8 = JsArrayBuffer::new(8, context)?;letarray = JsUint8Array::from_array_buffer(array_buffer8, context)?;assert_eq!(    array.buffer(context)?.as_object().unwrap().get(PropertyKey::String(js_string!("byteLength")), context).unwrap(),    JsValue::new(8));

ReturnsTypedArray.prototype.byteLength.

ReturnsTypedArray.prototype.byteOffset.

Function that created the instance object. It is the hiddenTypedArray constructor function,but each typed array subclass also defines its own constructor property.

ReturnsTypedArray.prototype.constructor.

§Examples

letcontext =&mutContext::default();letarray = JsUint8Array::from_iter(vec![1,2,3,4,5], context)?;assert_eq!(Err(JsNativeError::typ()        .with_message("the TypedArray constructor should never be called directly")        .into()),    array.constructor(context));

Shallow copies part of this typed array to another location in the same typedarray and returns this typed array without modifying its length.

ReturnsTypedArray.prototype.copyWithin().

§Examples

letcontext =&mutContext::default();letarray = JsUint8Array::from_iter(vec![1u8,2u8,3u8,4u8,5u8,6u8,7u8,8u8], context)?;array.copy_within(3,1,Some(3), context)?;assert_eq!(array.get(0, context)?, JsValue::new(1.0));assert_eq!(array.get(1, context)?, JsValue::new(2.0));assert_eq!(array.get(2, context)?, JsValue::new(3.0));assert_eq!(array.get(3, context)?, JsValue::new(2.0));assert_eq!(array.get(4, context)?, JsValue::new(3.0));assert_eq!(array.get(5, context)?, JsValue::new(6.0));assert_eq!(array.get(6, context)?, JsValue::new(7.0));assert_eq!(array.get(7, context)?, JsValue::new(8.0));

CallsTypedArray.prototype.fill().

CallsTypedArray.prototype.every().

CallsTypedArray.prototype.some().

CallsTypedArray.prototype.sort().

Returns a new typed array on the sameArrayBuffer store and with the same elementtypes as for this typed array.The begin offset is inclusive and the end offset is exclusive.

CallsTypedArray.prototype.subarray().

§Examples

letcontext =&mutContext::default();letarray = JsUint8Array::from_iter(vec![1u8,2u8,3u8,4u8,5u8,6u8,7u8,8u8], context)?;letsubarray2_6 = array.subarray(2,6, context)?;assert_eq!(subarray2_6.length(context)?,4);assert_eq!(subarray2_6.get(0, context)?, JsValue::new(3.0));assert_eq!(subarray2_6.get(1, context)?, JsValue::new(4.0));assert_eq!(subarray2_6.get(2, context)?, JsValue::new(5.0));assert_eq!(subarray2_6.get(3, context)?, JsValue::new(6.0));letsubarray4_6 = array.subarray(-4,6, context)?;assert_eq!(subarray4_6.length(context)?,2);assert_eq!(subarray4_6.get(0, context)?, JsValue::new(5.0));assert_eq!(subarray4_6.get(1, context)?, JsValue::new(6.0));

CallsTypedArray.prototype.toLocaleString()

CallsTypedArray.prototype.filter().

CallsTypedArray.prototype.map().

CallsTypedArray.prototype.reduce().

CallsTypedArray.prototype.reduceRight().

CallsTypedArray.prototype.reverse().

Stores multiple values in the typed array, reading input values from a specified array.

ReturnsTypedArray.prototype.set().

§Examples

letcontext =&mutContext::default();letarray_buffer8 = JsArrayBuffer::new(8, context)?;letinitialized8_array = JsUint8Array::from_array_buffer(array_buffer8, context)?;initialized8_array.set_values(  JsArray::from_iter(vec![JsValue::new(1), JsValue::new(2)], context).into(),Some(3),  context,)?;assert_eq!(initialized8_array.get(0, context)?, JsValue::new(0));assert_eq!(initialized8_array.get(1, context)?, JsValue::new(0));assert_eq!(initialized8_array.get(2, context)?, JsValue::new(0));assert_eq!(initialized8_array.get(3, context)?, JsValue::new(1.0));assert_eq!(initialized8_array.get(4, context)?, JsValue::new(2.0));assert_eq!(initialized8_array.get(5, context)?, JsValue::new(0));assert_eq!(initialized8_array.get(6, context)?, JsValue::new(0));assert_eq!(initialized8_array.get(7, context)?, JsValue::new(0));assert_eq!(initialized8_array.get(8, context)?, JsValue::undefined());

CallsTypedArray.prototype.slice().

CallsTypedArray.prototype.find().

Returns the index of the first element in an array that satisfies theprovided testing function.If no elements satisfy the testing function,JsResult::Ok(None) is returned.

CallsTypedArray.prototype.findIndex().

§Examples

letcontext =&mutContext::default();letdata: Vec<u8> = (0..=255).collect();letarray = JsUint8Array::from_iter(data, context)?;letgreter_than_10_predicate = FunctionObjectBuilder::new(    context.realm(),    NativeFunction::from_fn_ptr(|_this, args, _context| {letelement = args            .first()            .cloned()            .unwrap_or_default()            .as_number()            .expect("error at number conversion");Ok(JsValue::from(element >10.0))    }),).build();assert_eq!(    array.find_index(greter_than_10_predicate,None, context),Ok(Some(11)));

Iterates the typed array in reverse order and returns the value ofthe first element that satisfies the provided testing function.If no elements satisfy the testing function,JsResult::Ok(None) is returned.

CallsTypedArray.prototype.findLast().

§Examples

letcontext =&mutContext::default();letdata: Vec<u8> = (0..=255).collect();letarray = JsUint8Array::from_iter(data, context)?;letlower_than_200_predicate = FunctionObjectBuilder::new(    context.realm(),    NativeFunction::from_fn_ptr(|_this, args, _context| {letelement = args            .first()            .cloned()            .unwrap_or_default()            .as_number()            .expect("error at number conversion");Ok(JsValue::from(element <200.0))    }),).build();assert_eq!(    array.find_last(lower_than_200_predicate.clone(),None, context),Ok(JsValue::new(199)));

Iterates the typed array in reverse order and returns the index ofthe first element that satisfies the provided testing function.If no elements satisfy the testing function,JsResult::OK(None) is returned.

CallsTypedArray.prototype.findLastIndex().

§Examples

letcontext =&mutContext::default();letdata: Vec<u8> = (0..=255).collect();letarray = JsUint8Array::from_iter(data, context)?;letlower_than_200_predicate = FunctionObjectBuilder::new(    context.realm(),    NativeFunction::from_fn_ptr(|_this, args, _context| {letelement = args            .first()            .cloned()            .unwrap_or_default()            .as_number()            .expect("error at number conversion");Ok(JsValue::from(element <200.0))    }),).build();assert_eq!(    array.find_last(lower_than_200_predicate.clone(),None, context),Ok(JsValue::new(199)));

Executes a provided function once for each typed array element.

CallsTypedArray.prototype.forEach().

§Examples

letcontext =&mutContext::default();letarray = JsUint8Array::from_iter(vec![1,2,3,4,5], context)?;letnum_to_modify = Gc::new(GcRefCell::new(0u8));letjs_function = FunctionObjectBuilder::new(    context.realm(),    NativeFunction::from_copy_closure_with_captures(        |_, args, captures, inner_context| {letelement = args                .first()                .cloned()                .unwrap_or_default()                .to_uint8(inner_context)                .expect("error at number conversion");*captures.borrow_mut() += element;Ok(JsValue::undefined())        },        Gc::clone(&num_to_modify),    ),).build();array.for_each(js_function,None, context);letborrow =*num_to_modify.borrow();assert_eq!(borrow,15u8);

Determines whether a typed array includes a certain value among its entries,returning true or false as appropriate.

CallsTypedArray.prototype.includes().

§Examples

letcontext =&mutContext::default();letdata: Vec<u8> = (0..=255).collect();letarray = JsUint8Array::from_iter(data, context)?;assert_eq!(array.includes(JsValue::new(2),None, context),Ok(true));letempty_array = JsUint8Array::from_iter(vec![], context)?;assert_eq!(    empty_array.includes(JsValue::new(2),None, context),Ok(false));

CallsTypedArray.prototype.indexOf().

CallsTypedArray.prototype.lastIndexOf().

CallsTypedArray.prototype.join().

CallsTypedArray.prototype.toReversed ( ).

CallsTypedArray.prototype.toSorted ( comparefn ).

CallsTypedArray.prototype.with ( index, value ).

It is a getter that returns the same string as the typed array constructor’s name.It returnsOk(JsValue::Undefined) if the this value is not one of the typed array subclasses.

ReturnsTypedArray.prototype.toStringTag().

§Examples

letcontext =&mutContext::default();letarray = JsUint8Array::from_iter(vec![1u8,2u8,3u8,4u8,5u8,6u8,7u8,8u8], context)?;lettag = array.to_string_tag(context)?.to_string(context)?;assert_eq!(tag,js_string!("Uint8Array"));

Downcasts a reference to the object,if the object is of typeT.

§Panics

Panics if the object is currently mutably borrowed.

Downcasts a mutable reference to the object,if the object is type native object typeT.

§Panics

Panics if the object is currently borrowed.

Checks if this object is an instance of a certainNativeObject.

§Panics

Panics if the object is currently mutably borrowed.

Checks if it’s an ordinary object.

§Panics

Panics if the object is currently mutably borrowed.

Checks if it’s anArray object.

The abstract operationToPropertyDescriptor.

More information:

• ECMAScript reference

7.3.25 CopyDataProperties ( target, source, excludedItems )

More information:

• ECMAScript

Immutably borrows theObject.

The borrow lasts until the returnedRef exits scope.Multiple immutable borrows can be taken out at the same time.

§Panics

Panics if the object is currently mutably borrowed.

Mutably borrows the Object.

The borrow lasts until the returnedRefMut exits scope.The object cannot be borrowed while this borrow is active.

§Panics

Panics if the object is currently borrowed.

Immutably borrows theObject, returning an error if the value is currently mutably borrowed.

The borrow lasts until the returnedGcCellRef exits scope.Multiple immutable borrows can be taken out at the same time.

This is the non-panicking variant ofborrow.

Mutably borrows the object, returning an error if the value is currently borrowed.

The borrow lasts until the returnedGcCellRefMut exits scope.The object be borrowed while this borrow is active.

This is the non-panicking variant ofborrow_mut.

Get the prototype of the object.

§Panics

Panics if the object is currently mutably borrowed.

Set the prototype of the object.

§Panics

Panics if the object is currently mutably borrowed

Inserts a field in the objectproperties without checking if it’s writable.

If a field was already in the object with the same name, thantrue is returnedwith that field, otherwisefalse is returned.

It determines if Object is a callable function with a[[Call]] internal method.

More information:

• ECMAScript reference

It determines if Object is a function object with a[[Construct]] internal method.

More information:

• ECMAScript reference

Check if object is extensible.

More information:

• ECMAScript reference

Get property from object or throw.

More information:

• ECMAScript reference

set property of object or throw if bool flag is passed.

More information:

• ECMAScript reference

Create data property

More information:

• ECMAScript reference

Create data property or throw

More information:

• ECMAScript reference

Define property or throw.

More information:

• ECMAScript reference

Defines the property or throws aTypeError if the operation fails.

More information:

• ECMAScript reference

Check if object has property.

More information:

• ECMAScript reference

Check if object has an own property.

More information:

• ECMAScript reference

Get all the keys of the properties of this object.

More information:

• ECMAScript reference

Call ( F, V [ , argumentsList ] )

§Panics

Panics if the object is currently mutably borrowed.

More information:

• ECMAScript reference

Construct ( F [ , argumentsList [ , newTarget ] ] )

Construct an instance of this object with the specified arguments.

§Panics

Panics if the object is currently mutably borrowed.

More information:

• ECMAScript reference

Make the objectsealed orfrozen.

More information:

• ECMAScript reference

Check if the object issealed orfrozen.

More information:

• ECMAScript reference