Language.Javascript.JSaddle.Properties

Low level JavaScript object property access. In most cases you should use Language.Javascript.JSaddle.Object instead.

This module is mostly here to implement functions needed to use JSPropRef.

Getting Property Values

getProp :: JSString -> Object -> JSM JSVal

get a property from an object. If accessing the property results in an exception, the exception is converted to a JSException. Since exception handling code prevents some optimizations in some JS engines, you may want to use unsafeGetProp instead

unsafeGetProp :: JSString -> Object -> JSM JSVal

objGetPropertyByName

Arguments

:: ToJSString name

=> Object

object to find the property on.

-> name

name of the property.

-> JSM JSVal

returns the property value.

Get a property value given the object and the name of the property.

objGetPropertyAtIndex

Arguments

:: Object

object to find the property on.

-> Int

index of the property.

-> JSM JSVal

returns the property value.

Get a property value given the object and the index of the property.

Setting Property Values

setProp :: JSString -> JSVal -> Object -> JSM ()

unsafeSetProp :: JSString -> JSVal -> Object -> JSM ()

objSetPropertyByName

Arguments

:: (ToJSString name, ToJSVal val)

=> Object

object to set the property on.

-> name

name of the property.

-> val

new value to set the property to.

-> JSM ()

Set a property value given the object and the name of the property.

objSetPropertyAtIndex

Arguments

:: ToJSVal val

=> Object

object to find property on.

-> Int

index of the property.

-> val

new value to set the property to.

-> JSM ()

Set a property value given the object and the index of the property.