How immediate attribute work on CommandLinks and CommandButtons in Salesforce?

Hi,

Visualforce Immediate Attribute on CommandLinks and CommandButtons Technical Explanation :-

• When we don’t want the validation rule to be fire during server request we set this attribute Immediate=”true”.
• Default value of this immediate attribute is false.
• When we are having functionality of Back to previous page or cancel button, where we don’t our validation rules to be fired. In this case if we didn’t set Immediate=”true” where validation rule will get fired and we end up in a state of unable to return to previous page.To avoid this case we need to set Immediate=”true” like below Visualforce Immediate Attribute on CommandLinks and CommandButtons example.

<apex:CommandLink action="{!cancelMethod}" value="Cancel Link" styleClass="btn" id="btnCancel" immediate="true">

<apex:commandButton value="Cancel" immediate="true" action="{!cancelbutton}"/>

• We usually wire this attribute in cancel button to skip validation rules.

Hope this helps.