epub, mobi |eng | 2010-07-06 | Author:Powers, Shelley [Shelley Powers]

13.4. Hiding Page Sections Problem You want to hide an existing page element and its children until needed. Solution You can set the CSS visibility property to hide and show ...

epub |eng | 2010-12-06 | Author:Flanagan, David [David Flanagan]

Canvas Example: Sparklines We’ll end this chapter with a practical example for drawing sparklines. A sparkline is a small data-display graphic intended to be included within the flow of text, ...

epub, mobi |eng | 2011-02-10 | Author:Haverbeke, Marijn [Marijn Haverbeke]

Animating Life We will need bind (or method) when implementing the step method of a terrarium. This method has to go over all the bugs on the grid, ask them ...

epub, pdf |eng | | Author:Zachary Kessin

Retrieving Data After data has been added to an object store, there must be a way to query and display it. There are several ways of interest to query data. ...

epub, pdf |eng | 2013-04-24 | Author:Stoyan Stefanov

var a = []; var array_like = { length: 1, 0: 1 }; If you test with: if ('length' in array_like) {} or if (array_like.hasOwnProperty('0')) {} or a similar “duck ...

epub, pdf |eng | 2013-03-25 | Author:David Herman

var reader = new CSVReader(); reader.read("a,b,c\nd,e,f\n"); // [["a,b,c"], ["d,e,f"]] This seemingly simple code has a major but subtle bug: The callback passed to lines.map refers to this, expecting to extract ...

epub |eng | 2012-08-07 | Author:Guillermo Rauch

module.exports = function search (query, fn) { request.get(‘http://search.twitter.com/search.json’) .data({ q: query }) .end(function (res) { if (res.body && Array.isArray(res.body.results)) { return fn(null, res.body.results); } fn(new Error(‘Bad twitter response’); }); }; ...

epub, pdf |eng | 2012-12-18 | Author:Cody Lindley [Cody Lindley]

Using the this Keyword Inside a User-Defined Constructor Function When a function is invoked with the new keyword, the value of this—as it’s stated in the constructor—refers to the instance ...

epub, mobi, pdf |eng | 2013-03-10 | Author:Scott Murray

Figure 7-3. Scatterplot with y scale inverted Yes, now a smaller input to yScale will produce a larger output value, thereby pushing those circles and text elements down, closer to ...

epub |eng | 2012-09-13 | Author:Jess Chadwick, Todd Snyder & Hrusikesh Panda [Jess Chadwick, Todd Snyder, and Hrusikesh Panda]

Donut Hole Caching Donut hole caching is the inverse of donut caching: while the donut caching technique caches the entire page, leaving out only a few small sections, donut hole ...

epub, pdf |eng | 2014-02-23 | Author:Axel Rauschmayer

function StrictColor(name) { 'use strict'; this.name = name; } var c = StrictColor('green'); // TypeError: Cannot set property 'name' of undefined Returning arbitrary objects from a constructor In many object-oriented ...

mobi, epub, pdf |eng | 0101-01-01 | Author:Chris Buckett

Note Callbacks are a common pattern, and you should get used to reading code that uses callbacks, but they do have their drawbacks, as you’ll discover. In the next section, ...

mobi, epub, pdf | | 2009-05-13 | Author:David N. Blank-Edelman

To find anyone with the last name Finkelstein or Hodgkin: (|(sn=Finkelstein)(sn=Hodgkin)) To find all of the Finkelsteins who do not work in Boston: (&(sn=Finkelstein)(!(l=Boston))) To find all the Finkelsteins or ...

mobi |eng | 2012-01-17 | Author:Larry Ullman

Figure 9.7. How windows are positioned relative to the entire screen. The innerHeight and innerWidth properties reflect the size of the content within the window, including scroll bars, when present. ...

epub, mobi |eng | 2014-02-13 | Author:Nicholas C. Zakas

Chapter 4. Constructors and Prototypes You might be able to get pretty far in JavaScript without understanding constructors and prototypes, but you won’t truly appreciate the language without a good ...