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    • What is JourneyApps Platform?
    • Tutorial: Build your First App
      • 1. Introduction
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      • 3. OXIDE IDE Overview
      • 4. Hello World app
      • 5. The Data Model
      • 6. View Components
      • 7. Queries and Data Sync
      • 8. Simple Navigation
      • 9. View Stack
      • 10. Input Validation
      • 11. View Parameters
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      • 16. GPS Capturing
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      • 21. CSV and APIs
      • 22. Conclusion
    • JourneyApps Platform Fundamentals
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      • What are Views?
      • What is the Data Model?
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      • Reference: model
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          • 📖display-3d-model Guides
            • Guide 1: Initialize and layout a 3D model in a view
            • Guide 2: Control playback position
            • Guide 3: Troubleshooting controls
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          • 📖Guide: PowerBI Embedding
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    • Extend your App with Custom Code
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        • Special Requirements for iOS Containers
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      • Backend integrations with CloudCode
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        • Barcode Scanning using Keyboard Emulation
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  • 📱App Features
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      • Automatic Voice Commands
        • Automatic Voice Commands - Advanced
      • Manual Voice Commands
    • App, Runtime and Container Updates
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  • 🌐CloudCode
    • CloudCode Overview
    • Trigger a CloudCode Task
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  • 📥Backend API
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      • Retrieve All Objects
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      • Batch Operations (v4 API)
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      • Field Representation
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    • API Limits
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  • ⚙️Technical
    • Data Synchronization Priority
    • Device Diagnostics
    • JSON1 Query Engine
    • Improve App Performance
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    • Supported Platforms
      • Web Container
      • Windows Installer
    • Domain Whitelist
  • 🖥️OXIDE
    • Get started with OXIDE
      • OXIDE Overview
      • Components of OXIDE
    • Configure Testing Deployments
    • Edit and Manage Files
      • How to Navigate to a Function
      • Manage External Dependencies
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    • Debugging & Troubleshooting
      • Common Troubleshooting Pointers
      • App Diagnostics Reports
      • Build Logs
    • OXIDE Workspaces
      • OXIDE Trees
  • ❕Deprecated Features
    • Deprecated Features and Components
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  1. Build your App
  2. UI Components
  3. All UI Components
  4. html

HTML FAQs

PreviousHTML Advanced TopicsNextGuide: HTML & JourneyApps iFrame Client

Last updated 2 years ago

How do I include the in my HTML file?

Please see .

Are there any limitations to what kind of websites I can reference as a ?

Yes - sources may have restrictions that prevent them from loading in external iFrames. A common example is when cross origin is not supported, as in the case of:

<html src="http://www.google.com" />

What kind of data can I include in the method?

You'll be able to include values such as number or strings, or serialized objects.

Posting a complex object (e.g. objects that include promises) or a function will likely throw an error. For such objects you might need to Base64 encode and/or apply JSON.stringify() before passing it in the post(). You will only be able to post function references, not functions themselves.

Can I use the developer console to troubleshooting the iFrame Client?

Yes, by selecting it from the list of available contexts:

Why am I receiving sandboxing errors?

The JourneyApps iFrame Client currently allows the following:

  • allow-same-origin

  • allow-scripts

  • allow-forms

  • allow-modals

Any other content will result in a sandboxing error.

Note that no additional restrictions are added/lifted on remote HTML sources by JourneyApps. The source may have its own sandboxing restrictions.

I am getting a "Callback for ... is already registered" error when returning to a view that has an HTML component on it. Why?

Why am I am getting a "No HTML component matching id: ... found" error upon entering my view?

If your HTML content is not loading and you are seeing references to sandboxing issues in the developer console, you are most likely trying to display .

This happens when a view is already on the - the html component was registered the first time the view was entered and with the current implementation of the HTML and iFrame Client, you cannot re-register callback for these. You can solve this either by clearing the view from the viewStack before navigating to it, or by manually keeping track (e.g. a global variable in you SharedJS) whether the component was already registered, and not registering it again when returning to the view.

You will receive this error when you attempt to post() to your iFrame Client before it has loaded successfully. For this you can add a or window.addEventListener('load') event to the iFrame, and post a message back to the app. An example of this is included .

💻
❔
restricted content
viewStack
JourneyApps iFrame Client
DOMContentLoaded
here
remote HTML source
post()
this section