Read e-book online The JavaScript Anthology: 101 Essential Tips, Tricks & Hacks PDF

By Cameron Adams

ISBN-10: 0975240269

ISBN-13: 9780975240267

Utilizing a cookbook process, The "JavaScript Anthology will aid you observe JavaScript to unravel a large number of universal internet improvement demanding situations. you will get solutions to one zero one questions starting from "How am i able to structure the time right into a 12 or 24-hour clock?" to "How am i able to make my scripts run faster?"Included during this booklet is broad assurance of DHTML and AJAX, together with how-to create and customise complicated results equivalent to draggable parts, dynamically sorting information in an internet Browser, complex menu platforms, retrieving facts from an online Server utilizing XML Http Request and more.The "JavaScript Anthology additionally comprises vast insurance of item orientated coding, effective script layout, accessibility, and cross-browser concerns. better of all, you will get obtain entry to all of the code utilized in the publication, so that you can positioned the scripts to take advantage of immediately.

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Read Online or Download The JavaScript Anthology: 101 Essential Tips, Tricks & Hacks PDF

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Download PDF by Cameron Adams: The JavaScript Anthology: 101 Essential Tips, Tricks & Hacks

Utilizing a cookbook technique, The "JavaScript Anthology will aid you observe JavaScript to unravel a large number of universal internet improvement demanding situations. you will get solutions to one hundred and one questions starting from "How am i able to structure the time right into a 12 or 24-hour clock? " to "How am i able to make my scripts run speedier? "Included during this publication is large insurance of DHTML and AJAX, together with how-to create and customise complex results corresponding to draggable parts, dynamically sorting information in an online Browser, complicated menu platforms, retrieving info from an online Server utilizing XML Http Request and extra.

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Extra resources for The JavaScript Anthology: 101 Essential Tips, Tricks & Hacks

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Js script can apply dynamic behaviors, but if scripting isn’t supported, the content still appears. We haven’t differentiated between devices explicitly—we’ve just provided content that’s dynamic if the browser can handle it, and static if not. biz Providing for Users who Don’t Have JavaScript (Progressive Enhancement) This scripting approach is popularly referred to as progressive enhancement, and it’s a methodology we’ll be using throughout this book. js"> But, as we’ve already seen, a wide range of devices will fall though this net, because JavaScript support is no longer an all-or-nothing proposition.

It’s a Date If the input value to the String constructor is a Date object, the string produced will be a human-readable representation of the date. We’ll learn more about this feature in Chapter 9. js (excerpt) var a = 2468; var s = a + ' motorway'; In this example, s has the value "2468 motorway". Less is not Always More The succinctness of this technique has led many developers to determine that string concatenation is the most efficient means of converting a number to a string. After all, it requires the least amount of code: var a = 10 + ''; But, since the readability of code is usually more important than a few bytes of JavaScript code, I don’t recommend this approach.

Internet Explorer for Windows Go to Tools > Internet Options > Advanced and uncheck the option Disable script debugging, then check the option Display a notification about every script error, to make a dialog pop up whenever an error occurs. Internet Explorer for Mac Go to Explorer > Preferences > Web Browser > Web Content and check the Show scripting error alerts option. safari IncludeDebugMenu -bool true You can also use an extension called Safari Enhancer,7 which includes an option to dump JavaScript messages to the Mac OS Console; however, these messages are not very helpful.

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