User Prompts are methods part of the Web Application API used to invoke Browser modals requesting a user action such as confirmation or input.
window.alert(message)
Show a modal popup with a message to the user.
Requires the user to click [OK] to dismiss.
alert("Hello World");
More information below in "Using alert()".
boolean = window.confirm(message)
Show a modal popup with the provided message.
Provides [OK] and [Cancel] buttons which will respond with a boolean value true
/ false
respectively.
confirm("Delete this comment?");
result = window.prompt(message, defaultValue)
Show a modal popup with the provided message and an input field with an optional pre-filled value.
Returns as result
the user provided input value.
prompt("Enter your website address", "http://");
More information below in "Usage of prompt()".
window.print()
Opens a modal with document print options.
print();