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How does a Visualforce page work in Salesforce?
Visualforce pages work like this. The browser makes a request and Salesforce uses Visualforce tags to generate HTML/CSS/JavaScript that is sent back to the browser. Most communication is in a simple text format so can be looked at.
What happens when you add your own CSS to Salesforce?
If you add your own CSS, then what matters is the combination (and priority) of your CSS and Salesforce’s and that can take debugging work to get right. If you add your own JavaScript, then that needs to rely on the HTML that Visualforce generates and fit in with the JavaScript that Visualforce generates. Your Javascript also needs to be valid.
Why do I get errors when I Click on JavaScript?
If you then click on the Console tab, and click on a link or button in the current page, you will see any errors in the execution of any JavaScript. If the new page has JavaScript that responds to user interactions such as clicks, when you do the click you will see any errors in that click handling JavaScript.
What can you do with JavaScript in Salesforce?
Any JavaScript included can then respond to user actions such as mouse clicks to modify the DOM or call back to Salesforce (e.g. to get more data). If you do not add your own JavaScript or CSS, then you are in safe territory because Salesforce tests their features well and across many browsers, and you should not need to do your own debugging.
The Visualforce renderer displays the appropriate edit interface for each field. Visualforce pages are compiled and rendered entirely by the Lightning platform. Because they are so tightly integrated, they display the same performance as standard Salesforce pages, regardless of the amount of data being displayed or edited.
What are the benefits of Visualforce for developers?
Visualforce also supports “quick fixes” that allow developers to create supporting components on the fly. For example, a developer can define a new Visualforce page simply by logging in to Salesforce and then entering the name of the new page in a URL. Much like a wiki, if the page does not yet exist, the platform creates it for you.
How to create a table of data in Visualforce?
Some Visualforce components, such as or , allow you to display information from multiple records at a time by iterating over a collection of records.
How are Visualforce components controlled in Salesforce apex?
The behavior of Visualforce components can either be controlled by the same logic that is used in standard Salesforce pages, or developers can associate their own logic with a controller class written in Apex. What is a Visualforce Page? Developers can use Visualforce to create a Visualforce page definition.