FM BetterForms Docs
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  • Introduction
  • 🏆Features
  • Getting Started
    • Welcome to FM BetterForms!
    • System Overview
    • Quick Tour of the BetterForms IDE
    • 1. Setting Up Your Foundation
      • 1.1 Configure FileMaker Server
      • 1.2 Install BetterForms Helper File
      • 1.3 Add Your Server to BetterForms (IDE)
    • 2. Building Your First Application
      • 2.1 Create an App (Site) in the IDE
      • 2.2 Create Your First Page (Intro to Page Builder)
      • 2.3 Understanding & Managing Environments (IDE)
      • 2.4 Adding Elements to Your Page
      • 2.5 Understanding Validation
      • 2.6 Adding Actions to Your Page
      • 2.7 Creating Your First List View
      • 2.8 Understanding Page Data Flow
      • 2.9 Creating Your First Hook
      • 2.10 Working with Data Tables (Coming Soon)
    • 3. Understanding Core BetterForms Concepts
      • 3.1 Introduction to Hooks (and where to find them in the IDE)
      • 3.2 Running Your First Hook (Practical Example)
      • 3.3 Introduction to Actions & Action Scripts (IDE Context)
      • 3.4 Understanding the Data Model (and Page Data Model UI)
    • 4. Common Customizations & Expanding Your App
      • 4.1 Adding & Configuring Buttons (Page Builder)
      • 4.2 Implementing Page Navigation (Actions & Site Navigation UI)
      • 4.3 Displaying Data in Tables (Page Builder & Element Config)
      • 4.4 Basic App Styling (Site Styling UI)
    • 5. Mastering the BetterForms Environment & Advancing Your Skills
      • 5.1 Understanding & Managing Environments (In-Depth)
      • 5.2 Deep Dive: Page Configuration & Settings
        • Navigating the Page Builder Interface
        • Working with Page-Level Action Scripts
        • Configuring the Page Data Model
        • Page Integration Settings Explained
        • Managing Page Info & Other Settings
      • 5.3 Working with Global Scripts
      • 5.4 Managing App (Site) Settings & Navigation
      • 5.5 Exploring Further: What to Learn Next
    • Support & Resources
      • Getting Help
      • Learning JSON
  • Reference
    • Site Settings
      • Navigation
      • App Model
      • DOM Header Insertions
      • Global Named Actions
      • Site Structure
      • Slots / Code Injection
    • Developer Mode
    • Page Settings
      • Data Model
      • Card / Window Modals
      • Validation
        • Custom Validators
      • Misc Page Settings
    • Page Elements
      • Copy of Site Structure
      • BetterForms Elements
        • Checkbox
        • Checklist
        • Cleave.js Input Masking
        • DateTime Picker
        • Google Address Autocomplete
        • Image Display Element
        • Input
        • Masked Input
        • Range Slider (noUiSlider)
        • Radios
        • Select
        • Advanced Select (selectEx)
        • TextArea
      • Common
        • Input
        • Button
        • Data Table
        • HTML
      • Grouping Elements
        • Tabs
        • Panel
        • accordion
        • accordion2
        • listrows
      • Uploading Files
        • dropzone
        • dropzone to S3
        • uploadCare
        • 🏗️Uppy File Upload Widget Integration with AWS S3
      • Misc Elements
        • Plain Text / Code Editor
        • signature
        • fullCalendar
        • rangeSlider
      • Payment Gateways
        • Authorize.net
        • PayPal
        • Stripe
      • Adding Custom Page Elements
    • Actions Processor
      • Named Actions (Action Scripts)
      • Actions
        • runUtilityHook
        • path
        • debounce
        • throttle
        • showAlert
        • showModal / hideModal
        • function
        • clipboard
        • cookie
        • setFocus
        • scrollTo
        • wait
        • emit
        • validate
        • channelJoinAnon
        • channelLeaveAnon
        • messageSend
        • messageSendAnonChannel
        • consoleError
        • showStripeCheckout
      • Authentication Actions
    • Script Hooks
      • Globals Variables
        • $$BF_Model
        • $$BF_App
        • $$BF_State
      • Keeping Keys Private
      • Reducing Payload Size
      • API Callback Endpoint
      • Common Hooks
      • Scoped Hooks
    • Users & Authentication
      • Managing User Accounts
      • Custom Login Pages
      • OAuth
    • Advanced Configuration
      • Custom Domains
    • BF Utility Functions
      • Example Usage
        • BF.i18n()
    • BF Error Codes
    • Messaging
      • Adding users to channels
      • Removing users from channels
      • Sending messages
      • Get connected users
      • Get active channels
    • Practices for File Downloads
    • BF Streaming Proxy
    • Updating the Helper File
    • Connection Trouble Shooting Guide
    • Software Testing Overview
    • JavaScript Libraries
    • FM BetterForms - Quality Assurance
    • Rollbacks and Version Control
    • BF Server Proxy
    • Setting up Auth0
    • Create an S3 Bucket on AWS
    • ApexCharts - Getting started
    • BF Enterprise Documentation
    • BetterForms Error Pages API
    • BF Streaming API
    • LLM Query API
    • Creating a PWA
  • Usage Tips
    • Troubleshooting
      • Debugging
      • Frozen Actions Queue
      • Vue Variables
    • JavaScript Tips
      • Calling Named Actions from HTML Vue Events
      • Calculations
    • Hacking a Webpage
    • System Overview
    • Forms Processor
      • Form Types
      • HTML & VueJS
      • Styling and Design
    • Customizing and Styling
      • Custom CSS
      • Custom Components
        • Components Editor
        • Component Best Practices
      • Page Pre-loaders
      • Favicon
    • Design Patterns and Best Practices
      • Working with environments
      • Handling Data
      • Saving Data
      • Data Optimization
      • Business Logic
      • UI / UX
      • Debugging
      • Script Engine Optimization
    • Getting Started
    • Installation
  • Security
    • Authentication
    • Security White Paper
    • Firewalls
    • Technology Stack
  • Compatibility
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On this page
  • As A Getter
  • Why Two Ways?

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  1. Usage Tips
  2. JavaScript Tips

Calculations

Nearly all JSON keys can be replaced with calculations. This is similar to how a field in Filemaker can also be a calculation.

FM BetterForms has three types of calculations, getters and functions. Both types are needed because the framework uses several open source modules internally and not all modules have the same compatibility.

As A Getter

Adding an evaluating calc as a getter will convert your code into a getter property that can be referenced as a regular hard coded attribute.

Syntax: myKey_calc Add a _calc to the key name.

As A Function Getter

Adding an evaluating calc as a function will convert your code into a function and attach it to the referenced key.

Syntax: myKey_calcf Add a _calcf to the key name.

As A Function

Adding an evaluating calc as a function will convert your code into a function and attach it to the referenced key.

Syntax: myKey_function Add a _function to the key name.

Scope

Scope changes when code is evaluated as a getter and is less flexible. Getters generally can only see the object they are part of. (The schema of the element)

Why Two Ways?

Different JavaScript components access different variables in different ways. Some modules will access an attribute as if it was a constant while others will check if it is a function. Functions are called differently than constants.

Example:

// in your schema ...
{
    "color": "blue",
    "visible": model.someField == 0
}
// in the JS module this may be accessed as ...
var theColor = color // blue

// Other modules would reference the attribute as a function ...
var isVisible = visible()  // this is calling the key as a function
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Last updated 3 years ago

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