# Using a standard Web browser's document object
document.write('Hello, World!');
# or with an alert, using a standard Web browser's window object (window.alert)
alert('Hello, world!');

# or, from the Mozilla command line implementation
print('Hello, world!');

# or, from the Windows Script Host
WScript.Echo('Hello, world!');

# or, from Firebug, Apple Safari, or Google Chrome debug console
console.log('Hello, world!');