Advanced Visualforce Development with JavaScript

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Advanced Visualforce DevelopmentJuly 30, 2015

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Speakers

Kartik ViswanadhaDirector, OpFocusSalesforce MVP@logontokartik

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▪ Don’t wait until the end to ask your question! – Technical support will answer questions starting

▪ Respect Q&A etiquette– Please don’t repeat questions. The support team is

working their way down the queue.

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Pre-requisites

• Basic understanding of Apex code

• Basic understanding of Visualforce

• Basic understanding of web-based technologies like HTML, JavaScript

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Agenda

• Visualforce Life Cycle

• JavaScript Remoting

• Remote Objects

• Dynamic Visualforce Components

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Visualforce Life Cycle

• Get Requests

• Postback Request

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Visualforce Life Cycle – Cont.

Evaluate Constructors

Evaluate Constructors for

Components

Evaluate Expressions and actions on page

Create View State

Send HTML to Browser

Decode View State

Evaluate Expressions

and all method calls

Evaluate actions that

triggered Postback

Update data & Redirect or

Update View State

Send HTML to Browser

POSTBACK

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JavaScript allows the Visualforce tobecome the interface you need

- Joshua Birk

• JavaScript Remoting

• Visualforce Remote Objects

• ActionFunction, ActionSupport

• JSForce, ForceTK, forceJS, ngForce

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JavaScript Remoting

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JavaScript Remoting

• A Stateless way to call Apex from JavaScript

JavaScript Function

Apex Controller

JavaScript Callback

@RemoteAction static

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Features of JavaScript Remoting

• Asynchronous

• No State Required

• Fast Performance

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JavaScript Remoting Use cases

• Slick & Fast User Interfaces

• Third party JavaScript Libraries or Frameworks

• Mobile Applications

• Single Page Applications

• JavaScript Guru

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Visualforce Remote Objects

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Remote Objects

Account Contact Lead

Controller

Account Contact Lead

Proxy Objects

Access Definition<apex:remoteObjects>

<apex:remoteObjectModel><apex:remoteObjectField>

Data AccessRetrieve()Create()Update()Delete()

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Remote Objects - Overrides

• Override the standard CRUD operations

• Add logic in your Apex Controller

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JavaScript Remoting, Remote Objects, Action Function

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Limits

• JavaScript Remoting• Maximum timeout of 120 sec, default 30 sec• Response size of max 15mb

• Visualforce Remote Objects• Max 100 Rows in a Single Request• No Support for Blob fields • Rendered attribute

• All Salesforce & Visualforce Service Limits

• Not counted against API

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Dynamic Visualforce Components

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Dynamic Visualforce Components

<apex:dynamicComponent componentValue="{!components}"/>

Dynamically builds the Visualforce Components

Value returned from the Apex Controller

Component.Apex.<any component> detail outputPanel ..

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Dynamic Visualforce Components - Architecture

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Wrap up

▪Visualforce page LifeCycle

▪JavaScript Remoting in Visualforce

▪JavaScript Remoting Use Cases

▪Visualforce Remote Objects

▪Comparison / Pros & Cons of each feature

▪Visualforce Dynamic Components

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References• https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/• https://developer.salesforce.com/trailhead/module/visualforce_fundamentals• https://

developer.salesforce.com/trailhead/module/visualforce_mobile_salesforce1• https://github.com/logontokartik/VFDynamicComponents• https://gist.github.com/logontokartik/b463e6988566f62c277d• https://github.com/mailtoharshit/Angular

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Jitendra ZaaSalesforce MVP@jitendrazaa

Peter KnolleSalesforce MVP@peterknolle

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Thank You

Advanced Visualforce Development with JavaScript

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