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Window

Values

addEventListener

Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched.

The options argument sets listener-specific options. For compatibility this can be a boolean, in which case the method behaves exactly as if the value was specified as options's capture.

When set to true, options's capture prevents callback from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE. When false (or not present), callback will not be invoked when event's eventPhase attribute value is CAPTURING_PHASE. Either way, callback will be invoked if event's eventPhase attribute value is AT_TARGET.

When set to true, options's passive indicates that the callback will not cancel the event by invoking preventDefault(). This is used to enable performance optimizations described in § 2.8 Observing event listeners.

When set to true, options's once indicates that the callback will only be invoked once after which the event listener will be removed.

If an AbortSignal is passed for options's signal, then the event listener will be removed when signal is aborted.

The event listener is appended to target's event listener list and is not appended if it has the same type, callback, and capture.Read more on MDN

letaddEventListener: (
WebAPI.DOMAPI.window,
WebAPI.EventAPI.eventType,
WebAPI.EventAPI.eventListener<'event>,
~options:WebAPI.EventAPI.addEventListenerOptions=?,
)=>unit

addEventListenerWithCapture

Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched.

The options argument sets listener-specific options. For compatibility this can be a boolean, in which case the method behaves exactly as if the value was specified as options's capture.

When set to true, options's capture prevents callback from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE. When false (or not present), callback will not be invoked when event's eventPhase attribute value is CAPTURING_PHASE. Either way, callback will be invoked if event's eventPhase attribute value is AT_TARGET.

When set to true, options's passive indicates that the callback will not cancel the event by invoking preventDefault(). This is used to enable performance optimizations described in § 2.8 Observing event listeners.

When set to true, options's once indicates that the callback will only be invoked once after which the event listener will be removed.

If an AbortSignal is passed for options's signal, then the event listener will be removed when signal is aborted.

The event listener is appended to target's event listener list and is not appended if it has the same type, callback, and capture.Read more on MDN

letaddEventListenerWithCapture: (
WebAPI.DOMAPI.window,
WebAPI.EventAPI.eventType,
WebAPI.EventAPI.eventListener<'event>,
)=>unit

alert

letalert:WebAPI.DOMAPI.window=>unit

Parameters

WebAPI.DOMAPI.window

Return type

unit

alert2

letalert2: (WebAPI.DOMAPI.window,string)=>unit

Parameters

WebAPI.DOMAPI.window string

Return type

unit

asEventTarget

letasEventTarget:WebAPI.DOMAPI.window=>WebAPI.EventAPI.eventTarget

atob

letatob: (WebAPI.DOMAPI.window,string)=>string

Parameters

WebAPI.DOMAPI.window string

Return type

string

btoa

letbtoa: (WebAPI.DOMAPI.window,string)=>string

Parameters

WebAPI.DOMAPI.window string

Return type

string

cancelAnimationFrame

letcancelAnimationFrame: (WebAPI.DOMAPI.window,int)=>unit

Parameters

WebAPI.DOMAPI.window int

Return type

unit

cancelIdleCallback

letcancelIdleCallback: (WebAPI.DOMAPI.window,int)=>unit

Parameters

WebAPI.DOMAPI.window int

Return type

unit

clearInterval

letclearInterval: (WebAPI.DOMAPI.window,int)=>unit

Parameters

WebAPI.DOMAPI.window int

Return type

unit

clearTimeout

Cancels the execution of a timeout created with setTimeout.

Read more on MDN

letclearTimeout: (WebAPI.DOMAPI.window,WebAPI.DOMAPI.timeoutId)=>unit

close

Closes the window.Read more on MDN

letclose:WebAPI.DOMAPI.window=>unit

Parameters

WebAPI.DOMAPI.window

Return type

unit

confirm

letconfirm: (WebAPI.DOMAPI.window, ~message:string=?)=>bool

Parameters

WebAPI.DOMAPI.window option< string >

Return type

bool

createImageBitmap

letcreateImageBitmap: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.htmlImageElement,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap10

letcreateImageBitmap10: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.htmlImageElement,
~sx:int,
~sy:int,
~sw:int,
~sh:int,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap11

letcreateImageBitmap11: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.svgImageElement,
~sx:int,
~sy:int,
~sw:int,
~sh:int,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap12

letcreateImageBitmap12: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.htmlVideoElement,
~sx:int,
~sy:int,
~sw:int,
~sh:int,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap13

letcreateImageBitmap13: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.htmlCanvasElement,
~sx:int,
~sy:int,
~sw:int,
~sh:int,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap14

letcreateImageBitmap14: (
WebAPI.DOMAPI.window,
~image:WebAPI.CanvasAPI.imageBitmap,
~sx:int,
~sy:int,
~sw:int,
~sh:int,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap15

letcreateImageBitmap15: (
WebAPI.DOMAPI.window,
~image:WebAPI.CanvasAPI.offscreenCanvas,
~sx:int,
~sy:int,
~sw:int,
~sh:int,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap16

letcreateImageBitmap16: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.videoFrame,
~sx:int,
~sy:int,
~sw:int,
~sh:int,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap17

letcreateImageBitmap17: (
WebAPI.DOMAPI.window,
~image:WebAPI.FileAPI.blob,
~sx:int,
~sy:int,
~sw:int,
~sh:int,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap18

letcreateImageBitmap18: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.imageData,
~sx:int,
~sy:int,
~sw:int,
~sh:int,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap2

letcreateImageBitmap2: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.svgImageElement,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap3

letcreateImageBitmap3: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.htmlVideoElement,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap4

letcreateImageBitmap4: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.htmlCanvasElement,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap5

letcreateImageBitmap5: (
WebAPI.DOMAPI.window,
~image:WebAPI.CanvasAPI.imageBitmap,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap6

letcreateImageBitmap6: (
WebAPI.DOMAPI.window,
~image:WebAPI.CanvasAPI.offscreenCanvas,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap7

letcreateImageBitmap7: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.videoFrame,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap8

letcreateImageBitmap8: (
WebAPI.DOMAPI.window,
~image:WebAPI.FileAPI.blob,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

createImageBitmap9

letcreateImageBitmap9: (
WebAPI.DOMAPI.window,
~image:WebAPI.DOMAPI.imageData,
~options:WebAPI.DOMAPI.imageBitmapOptions=?,
)=>promise<WebAPI.CanvasAPI.imageBitmap>

dispatchEvent

Dispatches a synthetic event event to target and returns true if either event's cancelable attribute value is false or its preventDefault() method was not invoked, and false otherwise.Read more on MDN

letdispatchEvent: (WebAPI.DOMAPI.window,WebAPI.EventAPI.event)=>bool

fetch

fetch(window, string, init)

Starts the process of fetching a resource from the network,returning a promise that is fulfilled once the response is available.

let response = await window->Window.fetch("https://rescript-lang.org")

Read more on MDN

letfetch: (
WebAPI.DOMAPI.window,
string,
~init:WebAPI.FetchAPI.requestInit=?,
)=>promise<WebAPI.FetchAPI.response>

Parameters

WebAPI.DOMAPI.window string option<WebAPI.FetchAPI.requestInit >

Return type

promise<WebAPI.FetchAPI.response >

fetchWithRequest

fetchWithRequest(window, request, init)

Starts the process of fetching a resource from the network,returning a promise that is fulfilled once the response is available.

let response = await window->Window.fetch(myRequest)

Read more on MDN

letfetchWithRequest: (
WebAPI.DOMAPI.window,
WebAPI.FetchAPI.request,
~init:WebAPI.FetchAPI.requestInit=?,
)=>promise<WebAPI.FetchAPI.response>

focus

Moves the focus to the window's browsing context, if any.Read more on MDN

letfocus:WebAPI.DOMAPI.window=>unit

Parameters

WebAPI.DOMAPI.window

Return type

unit

getComputedStyle

letgetComputedStyle: (
WebAPI.DOMAPI.window,
~elt:WebAPI.DOMAPI.element,
~pseudoElt:string=?,
)=>WebAPI.DOMAPI.cssStyleDeclaration

getSelection

letgetSelection:WebAPI.DOMAPI.window=>WebAPI.DOMAPI.selection

matchMedia

letmatchMedia: (
WebAPI.DOMAPI.window,
string,
)=>WebAPI.DOMAPI.mediaQueryList

moveBy

letmoveBy: (WebAPI.DOMAPI.window, ~x:int, ~y:int)=>unit

Parameters

WebAPI.DOMAPI.window int int

Return type

unit

moveTo

letmoveTo: (WebAPI.DOMAPI.window, ~x:int, ~y:int)=>unit

Parameters

WebAPI.DOMAPI.window int int

Return type

unit

open_

letopen_: (
WebAPI.DOMAPI.window,
~url:string=?,
~target:string=?,
~features:string=?,
)=>WebAPI.DOMAPI.window

Parameters

WebAPI.DOMAPI.window option< string > option< string > option< string >

Return type

WebAPI.DOMAPI.window

postMessage

Posts a message to the given window. Messages can be structured objects, e.g. nested objects and arrays, can contain JavaScript values (strings, numbers, Date objects, etc), and can contain certain data objects such as File Blob, FileList, and ArrayBuffer objects.

Objects listed in the transfer member of options are transferred, not just cloned, meaning that they are no longer usable on the sending side.

A target origin can be specified using the targetOrigin member of options. If not provided, it defaults to "/". This default restricts the message to same-origin targets only.

If the origin of the target window doesn't match the given target origin, the message is discarded, to avoid information leakage. To send the message to the target regardless of origin, set the target origin to "*".

Throws a "DataCloneError" DOMException if transfer array contains duplicate objects or if message could not be cloned.Read more on MDN

letpostMessage: (
WebAPI.DOMAPI.window,
~message:JSON.t,
~targetOrigin:string,
~transfer:array<Dict.t<string>>=?,
)=>unit

Parameters

WebAPI.DOMAPI.window Stdlib.JSON.t string option< array< Stdlib.Dict.t< string > > >

Return type

unit

postMessage2

Posts a message to the given window. Messages can be structured objects, e.g. nested objects and arrays, can contain JavaScript values (strings, numbers, Date objects, etc), and can contain certain data objects such as File Blob, FileList, and ArrayBuffer objects.

Objects listed in the transfer member of options are transferred, not just cloned, meaning that they are no longer usable on the sending side.

A target origin can be specified using the targetOrigin member of options. If not provided, it defaults to "/". This default restricts the message to same-origin targets only.

If the origin of the target window doesn't match the given target origin, the message is discarded, to avoid information leakage. To send the message to the target regardless of origin, set the target origin to "*".

Throws a "DataCloneError" DOMException if transfer array contains duplicate objects or if message could not be cloned.Read more on MDN

letpostMessage2: (
WebAPI.DOMAPI.window,
~message:JSON.t,
~options:WebAPI.DOMAPI.windowPostMessageOptions=?,
)=>unit

Parameters

WebAPI.DOMAPI.window Stdlib.JSON.t option<WebAPI.DOMAPI.windowPostMessageOptions >

Return type

unit

print

letprint:WebAPI.DOMAPI.window=>unit

Parameters

WebAPI.DOMAPI.window

Return type

unit

prompt

letprompt: (
WebAPI.DOMAPI.window,
~message:string=?,
~default:string=?,
)=>string

Parameters

WebAPI.DOMAPI.window option< string > option< string >

Return type

string

queueMicrotask

letqueueMicrotask: (WebAPI.DOMAPI.window,WebAPI.DOMAPI.voidFunction)=>unit

removeEventListener

Removes the event listener in target's event listener list with the same type, callback, and options.Read more on MDN

letremoveEventListener: (
WebAPI.DOMAPI.window,
WebAPI.EventAPI.eventType,
WebAPI.EventAPI.eventListener<'event>,
~options:WebAPI.EventAPI.eventListenerOptions=?,
)=>unit

removeEventListener_useCapture

Removes the event listener in target's event listener list with the same type, callback, and options.Read more on MDN

letremoveEventListener_useCapture: (
WebAPI.DOMAPI.window,
WebAPI.EventAPI.eventType,
WebAPI.EventAPI.eventListener<'event>,
)=>unit

reportError

letreportError: (WebAPI.DOMAPI.window,JSON.t)=>unit

Parameters

WebAPI.DOMAPI.window Stdlib.JSON.t

Return type

unit

requestAnimationFrame

letrequestAnimationFrame: (
WebAPI.DOMAPI.window,
WebAPI.DOMAPI.frameRequestCallback,
)=>int

requestIdleCallback

letrequestIdleCallback: (
WebAPI.DOMAPI.window,
~callback:WebAPI.DOMAPI.idleRequestCallback,
~options:WebAPI.DOMAPI.idleRequestOptions=?,
)=>int

resizeBy

letresizeBy: (WebAPI.DOMAPI.window, ~x:int, ~y:int)=>unit

Parameters

WebAPI.DOMAPI.window int int

Return type

unit

resizeTo

letresizeTo: (WebAPI.DOMAPI.window, ~width:int, ~height:int)=>unit

Parameters

WebAPI.DOMAPI.window int int

Return type

unit

scroll

letscroll: (
WebAPI.DOMAPI.window,
~options:WebAPI.DOMAPI.scrollToOptions=?,
)=>unit

Parameters

WebAPI.DOMAPI.window option<WebAPI.DOMAPI.scrollToOptions >

Return type

unit

scroll2

letscroll2: (WebAPI.DOMAPI.window, ~x:float, ~y:float)=>unit

Parameters

WebAPI.DOMAPI.window float float

Return type

unit

scrollBy

letscrollBy: (
WebAPI.DOMAPI.window,
~options:WebAPI.DOMAPI.scrollToOptions=?,
)=>unit

Parameters

WebAPI.DOMAPI.window option<WebAPI.DOMAPI.scrollToOptions >

Return type

unit

scrollBy2

letscrollBy2: (WebAPI.DOMAPI.window, ~x:float, ~y:float)=>unit

Parameters

WebAPI.DOMAPI.window float float

Return type

unit

scrollTo

letscrollTo: (
WebAPI.DOMAPI.window,
~options:WebAPI.DOMAPI.scrollToOptions=?,
)=>unit

Parameters

WebAPI.DOMAPI.window option<WebAPI.DOMAPI.scrollToOptions >

Return type

unit

scrollTo2

letscrollTo2: (WebAPI.DOMAPI.window, ~x:float, ~y:float)=>unit

Parameters

WebAPI.DOMAPI.window float float

Return type

unit

setInterval

letsetInterval: (
WebAPI.DOMAPI.window,
~handler:string,
~timeout:int=?,
)=>int

Parameters

WebAPI.DOMAPI.window string option< int >

Return type

int

setInterval2

letsetInterval2: (
WebAPI.DOMAPI.window,
~handler:unit=>unit,
~timeout:int=?,
)=>int

Parameters

WebAPI.DOMAPI.window unit unit option< int >

Return type

int

setTimeout

Executes a function after a delay given in milliseconds expires.

Read more on MDN

letsetTimeout: (
WebAPI.DOMAPI.window,
~handler:unit=>unit,
~timeout:int=?,
)=>WebAPI.DOMAPI.timeoutId

Parameters

WebAPI.DOMAPI.window unit unit option< int >

Return type

WebAPI.DOMAPI.timeoutId

stop

Cancels the document load.Read more on MDN

letstop:WebAPI.DOMAPI.window=>unit

Parameters

WebAPI.DOMAPI.window

Return type

unit

structuredClone

letstructuredClone: (
WebAPI.DOMAPI.window,
't,
~options:WebAPI.ChannelMessagingAPI.structuredSerializeOptions=?,
)=>'t
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