apache/royale-asjs

Uncaught TypeError: Cannot read property 'length' of null (ContainerDataBinding.js:67)

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#1107 opened on May 3, 2021

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help wanted

Description

When I use fx:Binding in my application It will throw this exception There's three arguments in ContainerDataBinding binding.source binding.destFunc binding.destination for Example if I am using binding in my application like this <fx:Binding source="sname.text" destination="controller.scenario.name"/> binding.source should be sname and binding.destFunc should be null and binding.destination should be controller.scenario.name But when i compile application binding.source** is sname binding.destFunc is controller.scenario.name and binding.destination is null image image

Contributor guide

Tech stack
javascript
Domain
frontend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
Understanding of Apache Royale bindingBasic JavaScript debugging
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate ContainerDataBinding.js around line 67 to understand why binding.destination is null when it should be set. Check the parsing logic for fx:Binding attributes to ensure source, destFunc, and destination are correctly assigned.