| waitForAnimationFrame | JavaScript.Web.AnimationFrame |
| wasClean | JavaScript.Web.CloseEvent |
| WebSocket | JavaScript.Web.WebSocket |
| WebSocketRequest | |
| 1 (Type/Class) | JavaScript.Web.WebSocket |
| 2 (Data Constructor) | JavaScript.Web.WebSocket |
| width | |
| 1 (Function) | JavaScript.Web.Canvas.ImageData |
| 2 (Function) | JavaScript.Web.Canvas |
| 3 (Function) | JavaScript.Web.Canvas.TextMetrics |
| withArray | JavaScript.JSON.Types.Instances |
| withBool | JavaScript.JSON.Types.Instances |
| withDouble | JavaScript.JSON.Types.Instances |
| withExport | GHCJS.Foreign.Export |
| withJSString | JavaScript.JSON.Types.Instances |
| withObject | JavaScript.JSON.Types.Instances |
| withoutPreemption | GHCJS.Concurrent |
| words | Data.JSString |
| words' | Data.JSString |
| Worker | JavaScript.Web.Worker |
| WouldBlockException | |
| 1 (Type/Class) | GHCJS.Concurrent, GHCJS.Types |
| 2 (Data Constructor) | GHCJS.Concurrent, GHCJS.Types |
| wrapResponseType | JavaScript.Web.XMLHttpRequest |
| write | |
| 1 (Function) | JavaScript.Array.Internal, JavaScript.Array |
| 2 (Function) | JavaScript.Array.ST |
| writeFloat32BE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeFloat32LE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeFloat64BE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeFloat64LE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeInt16BE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeInt16LE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeInt32BE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeInt32LE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeInt8 | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeUint16BE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeUint16LE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeUint32BE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeUint32LE | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |
| writeUint8 | |
| 1 (Function) | JavaScript.TypedArray.DataView |
| 2 (Function) | JavaScript.TypedArray.DataView.ST |