2022.2

Ascriptcanbeusedtosetboundariesforadatasource(see"SettingboundariesusingJavaScript"on
thefacingpage).Thescriptdetermineswhereanewrecordstarts.
Scriptscanalsobeusedindifferentstepsintheextractionworkflow.Youcan:
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Modifytheincomingdatapriortoexecutingtherestoftheextractionworkflow,viaaPre-
processor(see"Preprocessorstep"onpage249).
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EditextracteddatainafieldoftheDataModelusingaPost functionscript(enteredontheStep
propertiespane,underFieldDefinition;see"Modifyingextracteddata"onpage268and"Extract
stepproperties"onpage326).
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EnterascriptinaJavaScript-based field(see"Expression-basedfield"onpage265).Notethat
thelastvalueattributiontoavariableistheoneusedastheresultoftheexpression.Itispossible
torefertopreviouslyextractedfieldsiftheyareextractedhigherinthislistorinpreviousExtract
stepsintheextractionworkflow.
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LetanActionsteprunaJavaScript,forexampleto:
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Extractdatatofieldsattherootlevelorinadetailtable.SeeExtractingdatawithanAction
stepscript.
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AddavaluetoacustompropertydefinedinthePreprocessorstep.(See"Propertiesand
runtimeparameters"onpage227.)Notethatonlythevalueofpropertiesofwhichthe
scopeissetto"Eachrecord"canbechangedinascript.
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ChangetheleftandrightoperandsinaConditionsteptoaJavaScriptexpression.(OntheStep
propertiespane,underCondition,setBasedontoJavaScript;see"Conditionstepproperties"on
page347and"MultipleConditionsstepproperties"onpage349.)
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Furtherprocesstheresultingrecordsetaftertheentireextractionworkflowhasbeenexecuted,
viaaPostprocessor(see"Postprocessorstep"onpage258).
ThescriptcanalwaysbewrittendirectlyinasmallscriptareaorintheEdit scriptdialog.Toinvokethis
dialogclicktheUse JavaScript Editorbutton .
IntheEdit scriptdialog,pressCtrl+SpacetobringupthelistofavailableJavaScriptobjects
andfunctions(see"DataMapperScriptsAPI"onpage360).Usethearrowkeystoselectafunc-
tionorobjectandpressentertoinsertit.Typeadotafterthenameofthefunctionorobjecttosee
whichfeaturesaresubsequentlyavailable.
Keyboardshortcutsforthescripteditorarelistedinthefollowingtopic:"Keyboardshortcuts"on
page953.
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