AsyncScriptStep

public class AsyncScriptStep : ScriptStep

Step that runs some script which will return a result asynchronously via SwiftScraper.postMessage().

The StepFlowResult returned by the handler can be used to drive control flow of the steps.

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                    init(functionName:params:paramsKeys:handler:)

Initializer.

Swift

override public init(
    functionName: String,
    params: Any...,
    paramsKeys: [String] = [],
    handler: @escaping ScriptStepHandler
)

`functionName`	The name of the JavaScript function to call. The module namespace is automatically added.
`params`	Parameters which will be passed to the JavaScript function.
`paramsKeys`	Look up the values from the JSON model dictionary using these keys, and pass them as the parameters to the JavaScript function. If provided, these are used instead of `params`.
`handler`	Callback function which returns data from JavaScript, and passes the model JSON dictionary for modification.

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