The javascript anthology 101 essential tips tricks hacks - phần 9 potx

... you’ve enjoyed these chapters from The JavaScript Anthology: 101 Tips, Tricks & Hacks, why not order yourself a copy? The JavaScript Anthology: 101 Tips, Tricks & Hacks is the ultimate ... desk." The JavaScript Anthology: 101 Essential Tips, Tricks & Hacks also includes download access to all of the best practice code samples used th...

Ngày tải lên: 13/08/2014, 09:20

... for de- velopers to learn how to use them properly. They can be very useful for highlight- ing logical errors, and valuable as learning tools in their own right, but they’re limited in their ... 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 JavaScript console in Fi...

Ngày tải lên: 13/08/2014, 08:21

... Writing the Data in a Text Field 103 Reading and Setting the State of a Checkbox 106 Order the print version of this book to get all 588 pages!iv The JavaScript Anthology The JavaScript Anthology: 101 ... the Computer 280 The Speed of the Browser 281 Implementing Drag-and-drop Behavior 281 Reordering a List Using Drag-and-drop Functionality 290 Making a Scrolling New...

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

... 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

... pixels, then across by 200 pixels, then to a point that’s 300 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 depe...

Ngày tải lên: 13/08/2014, 09:20

... different way. In the capture phase, events work from the outside in, so the paragraph would receive the click first, then the hyperlink. In the bubble phase, events work from the inside out, so the anchor ... 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...

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

... content, 440 user agent strings, 192 , 194 , 197 user interfaces creating with DHTML, 2 29 266 differing GUI behaviors, 391 drag-and-drop functionality, 281– 290 screen readers, 454–455 UTC (Coordinated ... method, 71 JSON (JavaScript Object Notation) format, 481 K keyboard accessibility, 3 89 393 drag-and-drop functionality, 400 form validation, 398 menu usability, 421–428 menus, 390...

Ngày tải lên: 13/08/2014, 09:20

... 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 this: File: what-is -javascript. js function ... to the Keyboard 3 89 Using Device-independent Event Handlers 393 Making Scripts Accessible to the Keyboard as well as the Mouse 395 Rollovers and Revealing Content 396 F...

Ngày tải lên: 08/03/2014, 20:20