The javascript anthology 101 essential tips tricks hacks - phần 3 pptx

... external JavaScript file named what-is -javascript. js. The file should contain the code that you would otherwise put inside the script element, like this: File: what-is -javascript. js function saySomething(message) { ... kind of event-driven script. 5 This technique was pioneered by Simon Willison [http://www.sitepoint.com/blogs/2004/05/26/closures-and-executing -javascript- on-pag...

Ngày tải lên: 13/08/2014, 08:21

... Accessibility 38 5 Is JavaScript Inaccessible? 38 6 What is Accessibility? 38 6 Who are the Affected Users? 38 7 Making Scripts Accessible to the Keyboard 38 9 Using Device-independent Event Handlers 39 3 Making ... Readers 436 viiOrder the print version of this book to get all 588 pages! The JavaScript Anthology 101 Essential Tips, Tricks & Hacks (4 Chapter...

Ngày tải lên: 13/08/2014, 08:21

... to another file: and the Sony PSP, as well as legacy JavaScript browsers such as Opera 5 and Netscape 4. The last point in the list above is arguably the least likely (apart from other de- velopers ... was once the domain of specialists. Browser vendors and other technology companies are taking another look at the potential of this powerful language, as the line between the...

Ngày tải lên: 13/08/2014, 08:21

... accessible via JavaScript. The DOM isn’t just restricted to HTML and JavaScript, though. Here’s how the W3C DOM specification site 2 explains the matter: The Document Object Model is a platform- and ... with browser incompatibilities: they’re only useful there if the bug you’re looking for is in the browser that the debugger supports! Strict Warnings If you open the JavaSc...

Ngày tải lên: 13/08/2014, 08:21

... pixels, then across by 200 pixels, then to a point that’s 30 0 pixels from the left and 100 pixels from the top, then back to the top corner. Getting the Viewport Size (the Available Space inside the ... available, the script can trigger a click event handler that passes its href to the makePopup function, along with the other settings. The return value of the handler de...

Ngày tải lên: 13/08/2014, 09:20

... false); 4 http://www.sitepoint.com/blogs/2004/05/26/closures-and-executing -javascript- on-page-load/ 235 Order the print version of this book to get all 588 pages! The W3C Way (Event Listeners) ... browsers; the while loop then finds the first non-text-node parent if the target reported by the browser happens to be a text node. If we want to retrieve the element that was clic...

Ngày tải lên: 13/08/2014, 09:20

... Explorer, though they measure the distance from the mouse cursor to the edges of the browser window. In order to find the position of the cursor relative to the entire page, we need to add the current ... we check whether the cursor position plus the size of the layer is greater than the viewport size (minus an allowance for scrollbars). If part of the layer is going...

Ngày tải lên: 13/08/2014, 09:20

... 488 drop-down menu example, 32 3 36 1 adding timers, 33 8 34 5 constraining within windows, 34 5– 35 3 keyboard accessible version, 412– 4 23 select elements, 35 4 36 1 submenu arrows, 33 4 33 8 drop-down ... you’ve enjoyed these chapters from The JavaScript Anthology: 101 Tips, Tricks & Hacks, why not order yourself a copy? The JavaScript Anthology: 101 Tips, T...

Ngày tải lên: 13/08/2014, 09:20

... 551 returnValue property, 236 rollover effects, 39 6, 439 rollover styles, 33 0, 33 6 round brackets, 56, 62 round method, Math object, 32 , 34 35 rounding numbers, 33 , 38 Order the print version of this ... CSS) adding new rules, 220 creating, 224 deleting rules, 2 23 drop-down menu example, 32 3, 32 6, 33 0, 33 4 expanding menu example, 36 2 iframes and, 35 5 maintainin...

Ngày tải lên: 13/08/2014, 09:20

... Accessibility 38 5 Is JavaScript Inaccessible? 38 6 What is Accessibility? 38 6 Who are the Affected Users? 38 7 Making Scripts Accessible to the Keyboard 38 9 Using Device-independent Event Handlers 39 3 Making ... loads an external JavaScript file named what-is -javascript. js. The file should contain the code that you would otherwise put inside the script element, like...

Ngày tải lên: 08/03/2014, 20:20