JSDOM

Documentation

currentWindow :: MonadDOM m => m (Maybe Window)

currentWindowUnchecked :: MonadDOM m => m Window

currentDocument :: MonadDOM m => m (Maybe Document)

currentDocumentUnchecked :: MonadDOM m => m Document

syncPoint :: JSM ()

Forces execution of pending asyncronous code

syncAfter :: JSM a -> JSM a

Forces execution of pending asyncronous code after performing f

waitForAnimationFrame :: JSM Double

On GHCJS this is waitForAnimationFrame. On GHC it will delay the execution of the current batch of asynchronous command when they are sent to JavaScript. It will not delay the Haskell code execution. The time returned will be based on the Haskell clock (not the JavaScript clock).

nextAnimationFrame :: (Double -> JSM a) -> JSM a

Tries to executes the given code in the next animation frame callback. Avoid synchronous opperations where possible.

data AnimationFrameHandle

inAnimationFrame

Arguments

:: OnBlocked

what to do when encountering a blocking call

-> (Double -> JSM ())

the action to run

-> JSM AnimationFrameHandle

Run the action in an animationframe callback. The action runs in a synchronous thread, and is passed the high-performance clock time stamp for that frame.

inAnimationFrame'

Arguments

:: (Double -> JSM ())

the action to run

-> JSM AnimationFrameHandle

Run the action in an animationframe callback. The action runs in a synchronous thread, and is passed the high-performance clock time stamp for that frame. On GHCJS this version will continue asynchronously if it is not possible to complete the callback synchronously.

catch :: (MonadCatch m, Exception e) => m a -> (e -> m a) -> m a

Provide a handler for exceptions thrown during execution of the first action. Note that type of the type of the argument to the handler will constrain which exceptions are caught. See Control.Exception's catch.

bracket :: MonadMask m => m a -> (a -> m c) -> (a -> m b) -> m b

Generalized abstracted pattern of safe resource acquisition and release in the face of errors. The first action "acquires" some value, which is "released" by the second action at the end. The third action "uses" the value and its result is the result of the bracket.

If an error is thrown during the use, the release still happens before the error is rethrown.

Note that this is essentially a type-specialized version of generalBracket. This function has a more common signature (matching the signature from Control.Exception), and is often more convenient to use. By contrast, generalBracket is more expressive, allowing us to implement other functions like bracketOnError.