Syntax

• alert( message )
• confirm( message )
• prompt( message [, optionalValue])
• print()

Remarks

• https://www.w3.org/TR/html5/webappapis.html#user-prompts
• https://dev.w3.org/html5/spec-preview/user-prompts.html

About User Prompts

Persistent prompt modal

Confirm to Delete element

Usage of alert

Usage of prompt