Group items tagged

//2. Object Literals to Pass Optional Arguments function showStatistics(args) { document.write("Name: " + args.name + "
"); document.write("Team: " + args.team + "
"); if (typeof args.position === "string") { document.write("Position: " + args.position + "
"); } if (typeof args.average === "number") { document.write("Average: " + args.average + "
"); } if (typeof args.homeruns === "number") { document.write("Home Runs: " + args.homeruns + "
"); } if (typeof args.rbi === "number") { document.write("Runs Batted In: " + args.rbi + ""); } } showStatistics({ name: "Mark Teixeira" }); showStatistics({ name: "Mark Teixeira", team: "New York Yankees" }); showStatistics({ name: "Mark Teixeira", team: "New York Yankees", position: "1st Base", average: .284, homeruns: 32, rbi: 101 }); //Using Namespaces to Prevent Conflicts if (typeof MY == "undefined") { MY = new Object(); MY.CUSTOM = new Object(); } MY.CUSTOM.namespace = function() { function showStatistics(args) { .................. } showStatistics({ name: "Mark Teixeira", team: "New York Yankees", position: "1st Base", average: .284, homeruns: 32, rbi: 101 }); } MY.CUSTOM.namespace();

This table summarizes the meaning of various strings in different regexp syntaxes. It is intended as a quick reference, rather than a tutorial or specification. Please report any errors.

* Object.getPrototypeOf * Object.getOwnPropertyDescriptor * Object.keys * Object.defineProperty * Object.defineProperties * Object.create * Object.getOwnPropertyNames * JSON.stringify * JSON.parse * Date.now: Has been in JSC for a long time. * Date.prototype.toISOString * Date.prototype.toJSON * String.prototype.trim * "Array extras": Array.prototype.{indexOf,lastIndexOf,every,some,forEach,map,filter,reduce,reduce

JavaScript setTimeout Function - JavaScript Timing Events November 16, 2007 by Blogging Developer JavaScript features a couple of methods that lets you run a piece of JavaScript code (javascript function) at some point in the future. These methods are: * setTimeout() * setInterval() In this tutorial, I'll explain how setTimetout() method works, and give a real world example. You may find the details of setInterval() method in JavaScript setInterval Function - JavaScript Timing Events setTimeout() window.setTimeout() method allows you to specify a piece of JavaScript code (expression) will be run after specified number of miliseconds from when the setTimeout() method is called. Syntax var t = setTimeout ( expression, timeout ); The setTimeout() method returns a numeric timeout ID which can be used to refer the timeout to use with clearTimeout method. The first parameter (expression) of setTimeout() is a string containing a javascript statement. The statement could be a call to a JavaScript function like "delayedAlert();" or a statement like "alert('This alert is delayed.');". The second parameter (timeout), indicates the number of miliseconds to pass before executing the expression. Example An alert box will be shown 5 seconds later when you clicked the button. clearTimeout() Sometimes it's useful to be able to cancel a timer before it goes off. The clearTimeout() method lets us do exactly that. Its syntax is: clearTimeout ( timeoutId ); where timeoutId is the ID of the timeout as returned from the setTimeout() method call.