AJAX and PHP

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AJAX Chat}}xmlHttpGetMessages.send(params);}else{// we will check again for new messagessetTimeout("requestNewMessages();", updateInterval);}}catch(e){displayError(e.toString());}/* function that handles the http response when updating messages */function handleReceivingMessages(){// continue if the process is completedif (xmlHttpGetMessages.readyState == 4){// continue only if HTTP status is "OK"if (xmlHttpGetMessages.status == 200){try}}{// process the server's responsereadMessages();}catch(e){// display the error messagedisplayError(e.toString());}}else{// display the error messagedisplayError(xmlHttpGetMessages.statusText);}/* function that processes the server's response when updating messages */function readMessages(){// retrieve the server's responsevar response = xmlHttpGetMessages.responseText;// server error?if (response.indexOf("ERRNO") >= 0|| response.indexOf("error:") >= 0|| response.length == 0)throw(response.length == 0 ? "Void server response." : response);// retrieve the document elementresponse = xmlHttpGetMessages.responseXML.documentElement;// retrieve the flag that says if the chat window has been cleared or notclearChat =response.getElementsByTagName("clear").item(0).firstChild.data;// if the flag is set to true, we need to clear the chat windowif(clearChat == "true"){// clear chat window and reset the iddocument.getElementById("scroll").innerHTML = "";lastMessageID = -1;156
}}// retrieve the arrays from the server's responseidArray = response.getElementsByTagName("id");colorArray = response.getElementsByTagName("color");nameArray = response.getElementsByTagName("name");timeArray = response.getElementsByTagName("time");messageArray = response.getElementsByTagName("message");// add the new messages to the chat windowdisplayMessages(idArray, colorArray, nameArray, timeArray,messageArray);// the ID of the last received message is stored locallyif(idArray.length>0)lastMessageID = idArray.item(idArray.length - 1).firstChild.data;// restart sequencesetTimeout("requestNewMessages();", updateInterval);Chapter 5/* function that appends the new messages to the chat list */function displayMessages(idArray, colorArray, nameArray,timeArray, messageArray){// each loop adds a new messagefor(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
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O}EN PORTADAEl aborto...más allá
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Chapter 1Because end-user satisfact
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Chapter 1Three points for you to ke
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Chapter 1With JavaScript, developer
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interrupting the user from his or h
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• Creating simple online chat sol
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Chapter 1done typing. (This method
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Chapter 1All exercises from this bo
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etrieve the user name$name = $_GET[
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Chapter 1If you're curious to test
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AJAX and the Future of Web Applicat
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Client-Side Techniques with Smarter
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Chapter 2font-size: 10pt;}.TableCon
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Chapter 2Creating the XMLHttpReques
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Chapter 2You could, for example, ch
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You will learn the most interesting
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Chapter 2The safer version of proce
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Chapter 24. Create a file called as
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Chapter 2Figure 2.6: The Four HTTP
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Chapter 2}}else{// display status m
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Chapter 2}{// try to create XMLHttp
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Chapter 2The responseXML method of
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Chapter 2Figure 2.10: Opera Display
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I admit that the following piece of
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3Server-Side Techniqueswith PHP and
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Chapter 3}for (var i=0; i
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Chapter 3// create the element$boo
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Chapter 3// create the root elemen
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Chapter 3// read a file from the se
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Chapter 3Figure 3.3: PHP Parameters
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Chapter 3Without the customized err
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}}// display the error in case of f
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Chapter 3Figure 3.7: Connecting to
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Chapter 3}}// continue only if HTTP
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Chapter 3You can make Firefox liste
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Chapter 3}"MSXML2.XMLHTTP.4.0","MSX
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'TEXT: ' . $errStr . chr(10) .'LOCA
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etrieve the parameters$num = 1; //
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Chapter 3Figure 3.16: Flowchart Des
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}Chapter 3// only continue if xmlHt
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}throw(response.length == 0 ? "Serv
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function process(){// ...if (reques
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Chapter 3Working with MySQLA back-e
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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
Page 119 and 120: Chapter 3After these commands execu
Page 121 and 122: Chapter 3• friendly.php is a PHP
Page 123 and 124: This example requires a JavaScript-
Page 125 and 126: }}// try to connect to the servertr
Page 127 and 128: Chapter 3}// create HTML-formatted
Page 129: Chapter 3On the server side, all th
Page 132 and 133: AJAX Form ValidationThe code in thi
Page 134 and 135: AJAX Form ValidationFigure 4.2: The
Page 136 and 137: AJAX Form ValidationNote that deali
Page 138 and 139: AJAX Form Validation"3" => "March",
Page 140 and 141: AJAX Form Validationclass="">Please
Page 142 and 143: AJAX Form Validation}}alert("Error
Page 144 and 145: AJAX Form Validation// output the e
Page 146 and 147: AJAX Form Validationbreak;}}// Chec
Page 148 and 149: AJAX Form Validationprivate functio
Page 150 and 151: AJAX Form ValidationThe onblur even
Page 152 and 153: AJAX Form ValidationAfter this basi
Page 154 and 155: AJAX Form ValidationSummaryWhile we
Page 156 and 157: AJAX ChatFigure 5.1: MeeboMeebo off
Page 158 and 159: AJAX ChatThe messages for the AJAX
Page 160 and 161: AJAX Chat// destructor closes datab
Page 162 and 163: AJAX Chat}}?>8. Create another file
Page 164 and 165: AJAX Chat/* creates an XMLHttpReque
Page 168 and 169: AJAX Chatfunction handleKey(e){// g
Page 170 and 171: AJAX Chat12. After having talked ab
Page 172 and 173: AJAX ChatOn pressing the Send butto
Page 174 and 175: AJAX ChatSummaryAt the beginning of
Page 176 and 177: AJAX Suggest and AutocompleteIt's a
Page 178 and 179: AJAX Suggest and AutocompleteTime f
Page 180 and 181: AJAX Suggest and Autocomplete170'FR
Page 182 and 183: AJAX Suggest and Autocomplete10. Cr
Page 184 and 185: AJAX Suggest and Autocomplete}if(ca
Page 186 and 187: AJAX Suggest and Autocomplete}if(re
Page 188 and 189: AJAX Suggest and Autocomplete}var k
Page 190 and 191: AJAX Suggest and AutocompletecrtLin
Page 192 and 193: AJAX Suggest and AutocompleteFigure
Page 194 and 195: AJAX Suggest and Autocompletewant c
Page 196 and 197: AJAX Suggest and AutocompleteNext,
Page 198 and 199: AJAX Suggest and Autocompletein sug
Page 200 and 201: AJAX Real-Time Charting with SVGFor
Page 202 and 203: AJAX Real-Time Charting with SVG0.0
Page 204 and 205: AJAX Real-Time Charting with SVG3.
Page 206 and 207: AJAX Real-Time Charting with SVG//
Page 208 and 209: AJAX Real-Time Charting with SVG//
Page 210 and 211: AJAX Real-Time Charting with SVGcoo
Page 212 and 213: AJAX Real-Time Charting with SVG•
Page 214 and 215: 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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