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How it works... in Software Generate pdf417 in Software How it works...

1. use software pdf417 integrating topaint barcode pdf417 for software QR Code Spevcification Which creates the string:. {"fruits":[{"name":"apple", "qty":"1 dozen"},{"name":"banana","qty":"le ss than a dozen"}]}. Most of the time you do not barcode pdf417 for None need JSON strings to be spaced legibly, but if you do, the stringify function also accepts an integer as its third argument. This integer will be the number of spaces to use for indentation:. var jsonStr = YAHOO.lang.JS ON.

stringify(myData, ["name","qty"], 4);. Creating the string:. { "fruits": [ { "name":"app le", "qty":12 }, { "name":"banana", "qty":5 } ] }. How it works... The YAHOO.lang.JSON.

parse f unction validates the provided string against a series of regular expressions to ensure the string consists of a valid JSON object and that the string is not malicious. Then it executes an eval statement to convert the value into its JavaScript object. Afterwards the filter function is applied against the object.

The YAHOO.lang.JSON.

stringify function iterates through the properties of the provided object and converts them to JSON strings. The function does this by delegating to the properties native toJSON function or falling back to similar YUI-based toJSON implementations. Filter and formatting occur as the function iterates through each property.

. There"s more... In YUI version 2.8, the YAH OO.lang.

JSON.stringify and YAHOO.lang.

JSON. parse functions were changed to default to the native browser JSON.parse and JSON.

stringify. The native implementations are much faster and safer than any JavaScript implementation. Consequently, the YAHOO.

lang.JSON.stringify function was changed to more closely emulated the ECMAScript version 5 specification.

. USING YUI 2.X See the webpa pdf417 2d barcode for None ge, http://developer.yahoo.

com/yui/json/, for more JSON examples and additional explanations.. More on parsing options You can force YUI to use th Software PDF-417 2d barcode e JavaScript versions of either function by setting the function"s use constant to false:. YAHOO.lang.JSON.

useNativePa rse = false; YAHOO.lang.JSON.

useNativeStringify = false;. The YUI JSON package is bas PDF-417 2d barcode for None ed on an open-source project started by Douglas Crockford. Find out more about JSON at http://www.json.

org.. Where to find answers for your YUI questions This book covers how to use Software pdf417 2d barcode YUI 2.x and most of its components. However, you may find that you still have questions after reading a chapter or that this book did not cover the component you are using.

Fortunately, YDN has a comprehensive website were you can find answers or ask questions from experts, http://yuilibrary.com/forum/viewforum.php f=4.

For documentation on all components:. http://developer.yahoo.com/ yui/2/.

For everything YUI:. http://yuilibrary.com/. Using YAHOO.util.Dom In this chapter, we will co ver: f Searching the document f Searching for element children and siblings f Searching for element ancestors f Working with HTML classes f Modifying element styles and HTML attributes f Element positions and sizes f Using and comparing regions f Using advanced YAHOO.util.Dom functions f Using YAHOO.

util.Selector to search the DOM f Using CSS 2 and 3 Selectors With YUI f Filtering and testing nodes using YAHOO.util.

Selector. Introduction In this chapter, you will l earn the YUI way of searching for and modifying elements in the Document Object Model (DOM), the structure used to represent HTML pages in JavaScript. YUI normalizes DOM interactions for you, so you do not need to worry about cross or legacy browser issues..

Using YAHOO.util.Dom Searching the document This recipe will show 4 dif PDF 417 for None ferent ways to search the DOM, allowing you to search using common HTML criteria or a custom filter function.. How to do it... Search the DOM is by an ele Software PDF-417 2d barcode ment"s ID attribute:. var myElement = YAHOO.util. Dom.

get("myElementId");. You can also pass a collect Software barcode pdf417 ion of IDs:. var nodes = YAHOO.util.Dom.

get("myElementId1","myElementId2","myEleme ntId3");. Search the DOM for all elem pdf417 2d barcode for None ents with a given tag name:. // find all DIV tags var no des = document.getElementsByTagName("div");. In the above example, getEl Software PDF-417 2d barcode ementsByTagName searches the entire DOM. However, getElementsByTagName is a native DOM function available in all browsers and on any DOM element. When you call it on a DOM element, then it only searches nodes inside that element:.

// find all DIV tags inside of a root element var myRootElement = YAHOO.util.Dom.

get("myRootElementId"); var nodes = myRootElement.getElementsByTagName("div");. Search the DOM for all elem Software PDF 417 ent with a given class name:. // find all elements with t he "selected" class var nodes = YAHOO.util.Dom.

getElementsByClassName("selected");. Additionally, by providing Software pdf417 a tag name as the second argument, you can restrict your search to only elements with that tag name:. // find all "div" elements with the "selected" class var nodes = YAHOO.util.Dom.

getElementsByClassName("selected", "div");. If you provide a third argu PDF417 for None ment, the root element, you can limit your searches to nodes under that element:. // find all "div" elements with the "selected" class under the element with id "myRootElementId" var nodes = YAHOO.util.Dom.

getElementsByClassName("selected", "div", "myRootElementId");. 2 // or you can provide a Software barcode pdf417 reference to the element var myRootElement = YAHOO.util.Dom.

get("myRootElementId"); var nodes = YAHOO.util.Dom.

getElementsByClassName("selected", "div", myRootElement);. Search the DOM for all elem ents matched by a filter function:. // find all elements with " PDF-417 2d barcode for None type" equals to "hidden" var nodes = YAHOO.util.Dom.

getElementsBy(function(node) { return "hidden" == node.type; });. Additionally, by providing a tag name as the second argument, you can restrict your search to only elements with that tag name:. // find all "input" element PDF-417 2d barcode for None s with "type" equals to "hidden" var nodes = YAHOO.util.Dom.

getElementsBy(function(node) { return "hidden" == node.type; }, "input");. And if you provide the root element as the third argument, you can limit your searches to nodes under that element:. // find all "input" element Software PDF-417 2d barcode s with "type" equals to "hidden", under "myFormId" var nodes = YAHOO.util.Dom.

getElementsBy(function(node) { return "hidden" == node.type; }, "input", "myFormId"); // or you can provide a reference to the element var myForm = YAHOO.util.

Dom.get("myFormId"); var nodes = YAHOO.util.

Dom.getElementsBy(function(node) { return "hidden" == node.type; }, "input", myForm);.

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