js outputting data

console.log(text);
console.log("Hello World!");
alert("Console has been updated.");(function () {
    var old = console.log;
    var logger = document.getElementById('log');
    console.log = function (message) {
        if (typeof message == 'object') {
            logger.innerHTML += (JSON && JSON.stringify ? JSON.stringify(message) : message) + '<br />';
        } else {
            logger.innerHTML += message + '<br />';
        }
    }
})();Javascript: Outputting Data
alert()
Output data in an alert box in the browser window
confirm()
Opens up a yes/no dialog and returns true/false depending on user click
console.log()
Writes information to the browser console, good for debugging purposes
WebsiteSetup.org - Beginner’s Javascript Cheat Sheet 5
document.write()
Write directly to the HTML document
prompt()
Creates an dialogue for user input