AJAX and PHP

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Client-Side Techniques with Smarter JavaScript// handles the response received from the serverfunction handleServerResponse(){// read the message from the servervar xmlResponse = xmlHttp.responseXML;// obtain the XML's document elementxmlRoot = xmlResponse.documentElement;// obtain arrays with book titles and ISBNstitleArray = xmlRoot.getElementsByTagName("title");isbnArray = xmlRoot.getElementsByTagName("isbn");// generate HTML outputvar html = "";// iterate through the arrays and create an HTML structurefor (var i=0; i
Chapter 2The responseXML method of the XMLHttpRequest object wraps the received response as a DOMdocument. If the response isn't a valid XML document, the browser might throw an error.However this depends on the specific browser you're using, because each JavaScript and DOMimplementation behaves in its own way.We will get back to bulletproofing the XML reading code in a minute; for now, let us assume theXML document is valid, and let's see how we read it. As you know, an XML document must haveone (and only one) document element, which is the root element. In our case this is .You will usually need a reference to the document element to start with, as we did in our exercise:// obtain the XML's document elementxmlRoot = xmlResponse.documentElement;The next step was to create two arrays, one with book titles and one with book ISBNs. We did thatusing the getElementsByTagName DOM function, which parses the entire XML file and retrievesthe elements with the specified name:// obtain arrays with book titles and ISBNstitleArray = xmlRoot.getElementsByTagName("title");isbnArray = xmlRoot.getElementsByTagName("isbn");This is, of course, one of the many ways in which you can read an XML file using the DOM. Amuch more powerful way is to use XPath, which allows you to define powerful queries on yourXML document. .The two arrays that we generated are arrays of DOM elements. In our case, the text that we wantdisplayed is the first child element of the title and isbn elements (the first child element is thetext element that contains the data we want to display).}// generate HTML outputvar html = "";// iterate through the arrays and create an HTML structurefor (var i=0; i
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AJAX and PHPBuilding Responsive Web
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CreditsAuthorsCristian DarieBrinzar
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Filip Cherecheş-Toşa is a web dev
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Table of ContentsPreface 1Chapter 1
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Table of ContentsPreparing Your *ni
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PrefaceWhat This Book CoversChapter
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PrefaceAny command-line input and o
Page 17 and 18: O}EN PORTADAEl aborto...más allá
Page 19 and 20: Chapter 1Because end-user satisfact
Page 21 and 22: Chapter 1Three points for you to ke
Page 23 and 24: Chapter 1With JavaScript, developer
Page 25 and 26: interrupting the user from his or h
Page 27 and 28: • Creating simple online chat sol
Page 29 and 30: Chapter 1done typing. (This method
Page 31 and 32: Chapter 1All exercises from this bo
Page 33 and 34: etrieve the user name$name = $_GET[
Page 35: Chapter 1If you're curious to test
Page 38 and 39: AJAX and the Future of Web Applicat
Page 40 and 41: Client-Side Techniques with Smarter
Page 51 and 52: Chapter 2font-size: 10pt;}.TableCon
Page 53 and 54: Chapter 2Creating the XMLHttpReques
Page 55 and 56: Chapter 2You could, for example, ch
Page 57 and 58: You will learn the most interesting
Page 59 and 60: Chapter 2The safer version of proce
Page 61 and 62: Chapter 24. Create a file called as
Page 63 and 64: Chapter 2Figure 2.6: The Four HTTP
Page 65 and 66: Chapter 2}}else{// display status m
Page 67: Chapter 2}{// try to create XMLHttp
Page 71 and 72: Chapter 2Figure 2.10: Opera Display
Page 73 and 74: I admit that the following piece of
Page 75 and 76: 3Server-Side Techniqueswith PHP and
Page 77 and 78: Chapter 3}for (var i=0; i
Page 79 and 80: Chapter 3// create the element$boo
Page 81 and 82: Chapter 3// create the root elemen
Page 83 and 84: Chapter 3// read a file from the se
Page 85 and 86: Chapter 3Figure 3.3: PHP Parameters
Page 87 and 88: Chapter 3Without the customized err
Page 89 and 90: }}// display the error in case of f
Page 91 and 92: Chapter 3Figure 3.7: Connecting to
Page 93 and 94: Chapter 3}}// continue only if HTTP
Page 95 and 96: Chapter 3You can make Firefox liste
Page 97 and 98: Chapter 3}"MSXML2.XMLHTTP.4.0","MSX
Page 99 and 100: 'TEXT: ' . $errStr . chr(10) .'LOCA
Page 101 and 102: etrieve the parameters$num = 1; //
Page 103 and 104: Chapter 3Figure 3.16: Flowchart Des
Page 105 and 106: }Chapter 3// only continue if xmlHt
Page 107 and 108: }throw(response.length == 0 ? "Serv
Page 109 and 110: function process(){// ...if (reques
Page 111 and 112: Chapter 3Working with MySQLA back-e
Page 113 and 114: Chapter 3Figure 3.17: Executing SQL
Page 115 and 116: Chapter 3SELECT user_id, user_name
Page 117 and 118: 3. In your foundations folder, crea
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Chapter 3After these commands execu
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Chapter 3• friendly.php is a PHP
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This example requires a JavaScript-
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}}// try to connect to the servertr
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Chapter 3}// create HTML-formatted
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Chapter 3On the server side, all th
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AJAX Form ValidationThe code in thi
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AJAX Form ValidationFigure 4.2: The
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AJAX Form ValidationNote that deali
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AJAX Form Validation"3" => "March",
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AJAX Form Validationclass="">Please
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AJAX Form Validation}}alert("Error
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AJAX Form Validation// output the e
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AJAX Form Validationbreak;}}// Chec
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AJAX Form Validationprivate functio
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AJAX Form ValidationThe onblur even
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AJAX Form ValidationAfter this basi
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AJAX Form ValidationSummaryWhile we
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AJAX ChatFigure 5.1: MeeboMeebo off
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AJAX ChatThe messages for the AJAX
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AJAX Chat// destructor closes datab
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AJAX Chat}}?>8. Create another file
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AJAX Chat/* creates an XMLHttpReque
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AJAX Chat}}xmlHttpGetMessages.send(
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AJAX Chatfunction handleKey(e){// g
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AJAX Chat12. After having talked ab
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AJAX ChatOn pressing the Send butto
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AJAX ChatSummaryAt the beginning of
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AJAX Suggest and AutocompleteIt's a
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AJAX Suggest and AutocompleteTime f
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AJAX Suggest and Autocomplete170'FR
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AJAX Suggest and Autocomplete10. Cr
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AJAX Suggest and Autocomplete}if(ca
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AJAX Suggest and Autocomplete}if(re
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AJAX Suggest and Autocomplete}var k
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AJAX Suggest and AutocompletecrtLin
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AJAX Suggest and AutocompleteFigure
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AJAX Suggest and Autocompletewant c
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AJAX Suggest and AutocompleteNext,
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AJAX Suggest and Autocompletein sug
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AJAX Real-Time Charting with SVGFor
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AJAX Real-Time Charting with SVG0.0
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AJAX Real-Time Charting with SVG3.
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AJAX Real-Time Charting with SVG//
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AJAX Real-Time Charting with SVG//
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AJAX Real-Time Charting with SVGcoo
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AJAX Real-Time Charting with SVG•
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AJAX GridImplementing the AJAX Grid
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AJAX GridCREATE TABLE product(produ
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AJAX Grid}// execute the queryif ($
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AJAX Grid// clear any output that h
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AJAX Grid212// the id of the grid d
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AJAX Grid// handle receiving the se
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AJAX Grid// handle receiving a resp
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AJAX GridAs usual on the server, we
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AJAX Grid220}{}stylesheetDoc = crea
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9AJAX RSS ReaderIn the last few yea
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Chapter 9Figure 9.1: Managing RSS S
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header('Pragma: no-cache');header('
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Chapter 9Loading feed...About the A
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Chapter 9}// continue if the proces
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Chapter 9}width: 410px;background-c
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And finally, we send the HTTP reque
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10AJAX Drag and DropWhen drag-and-d
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Chapter 10The Prototype features ar
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Chapter 10When dropping a task on t
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Chapter 10DROP HERE TO DELETE7. Cre
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header('Expires: Fri, 25 Dec 1980 0
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Chapter 10}}}else if (action =="del
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Chapter 1011. Load http://localhost
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details are saved using a cache sys
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Chapter 10SummaryThis is it! You've
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Preparing Your Working EnvironmentT
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Preparing Your Working EnvironmentA
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Preparing Your Working Environment1
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Preparing Your Working EnvironmentA
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Preparing Your Working Environment6
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IndexAabort() method, XMLHttpReques
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exception handling, JavaScript, 43
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PHP Parameters and Error Handlingre
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updateChart() function, realTimeCha
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AJAX and PHP

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