Visualforce Pages Flashcards

Which Visualforce component is used to display a list of records in a table format with built-in sorting and pagination?

Answer:

renders a table inside a pageBlock with automatic Salesforce styling, sorting, and pagination support.

What is the purpose of the 'rendered' attribute in Visualforce components?

Answer: It conditionally includes or excludes the component from the HTML output

The 'rendered' attribute accepts a Boolean expression; when false, the component is not emitted in the HTML response at all.

Which attribute on disables the standard Salesforce page header?

Answer: showHeader='false'

Setting showHeader='false' on removes the standard Salesforce header from the rendered page.

In Visualforce, how do you reference a static resource named 'myJS' in a tag?

Answer: {!URLFOR($Resource.myJS)}

URLFOR($Resource.myJS) generates the correct versioned URL for the static resource named myJS.

What happens when you set 'readOnly="true"' on an ?

Answer: The page can query up to 1 million rows but cannot perform DML

readOnly='true' increases the SOQL row limit to 1 million but prevents any DML operations on the page.

Which tag is used to define a reusable section of markup that can be included in multiple Visualforce pages?

Answer:

defines a custom reusable component that can be referenced by multiple Visualforce pages.

What is the correct way to call a method on a Visualforce controller using an action link?

Answer:

with the action attribute set to a controller method expression fires the method on click and performs a full or partial page refresh.