AJAX and PHP

More documents

Recommendations

Info

Client-Side Techniques with Smarter JavaScript}xmlRoot = 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
I admit that the following piece of code may have puzzled you:if (!xmlResponse || !xmlResponse.documentElement)throw("Invalid XML structure:\n" + xmlHttp.responseText);Chapter 2Apparently, if xmlResponse is void, we risk generating another error when trying to read itsdocumentElement property. In practice, the JavaScript interpreter only evaluates logical expressionswhen necessary, and it does so from left to right. In our particular case, if (!xmlResponse) is true,the second expression isn't evaluated at all, because the end result is true anyway. This feature,which is implemented in JavaScript and other languages, is called short-circuit evaluation andyou can read more about it here: http://www.webreference.com/javascript/reference/core/expr.html.Creating XML StructuresXML and DOM are everywhere. In this chapter, you used the DOM to create HTML elements onthe existing DOM object called document, and you also learned how to read XML documentsreceived from the server. An important detail that we didn't cover was creating brand new XMLdocuments using JavaScript's DOM. You may need to perform this kind of functionality if youwant to create XML documents on the client, and send them for reading on the server.We won't go through more examples, but we will only show you the missing bits. The trick withcreating a brand new XML document is creating the XML document itself. When adding elementsto the HTML output, you used the implicit document object, but this is not an option when youneed to create a new document.When creating a new DOM object with JavaScript, we're facing the same problem as with creatingXMLHttpRequest objects; the method of creating the object depends on the browser. The followingfunction is a universal function that returns a new instance of a DOM object:function createDomObject(){// will store reference to the DOM objectvar xmlDoc;// create XML documentif (document.implementation && document.implementation.createDocument){xmlDoc = document.implementation.createDocument("", "", null);}// works for Internet Explorerelse if (window.ActiveXObject){xmlDoc = new ActiveXObject("Microsoft.XMLDOM");}// returns the created object or displays an error messageif (!xmlDoc)alert("Error creating the DOM object.");elsereturn xmlDoc;}After executing this function, you can use the created DOM object to perform whatever actionsyou want. For more details about creating the DOM object check the following link:http://www.webreference.com/programming/javascript/domwrapper/index.html. For detailsof using the DOM object, refer to the DOM articles mentioned earlier in this chapter.63
Page 2 and 3:
AJAX and PHPBuilding Responsive Web
Page 4 and 5:
CreditsAuthorsCristian DarieBrinzar
Page 6 and 7:
Filip Cherecheş-Toşa is a web dev
Page 8 and 9:
Table of ContentsPreface 1Chapter 1
Page 11 and 12:
Table of ContentsPreparing Your *ni
Page 13 and 14:
PrefaceWhat This Book CoversChapter
Page 15 and 16:
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 = $_GET[
Page 35: Chapter 1If you're curious to test
Page 38 and 39: AJAX and the Future of Web Applicat
Page 40 and 41: Client-Side Techniques with Smarter
Page 51 and 52: Chapter 2font-size: 10pt;}.TableCon
Page 53 and 54: Chapter 2Creating the XMLHttpReques
Page 55 and 56: Chapter 2You could, for example, ch
Page 57 and 58: You will learn the most interesting
Page 59 and 60: Chapter 2The safer version of proce
Page 61 and 62: Chapter 24. Create a file called as
Page 63 and 64: Chapter 2Figure 2.6: The Four HTTP
Page 65 and 66: Chapter 2}}else{// display status m
Page 67 and 68: Chapter 2}{// try to create XMLHttp
Page 69 and 70: Chapter 2The responseXML method of
Page 71: Chapter 2Figure 2.10: Opera Display
Page 75 and 76: 3Server-Side Techniqueswith PHP and
Page 77 and 78: Chapter 3}for (var i=0; i
Page 79 and 80: Chapter 3// create the element$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
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 166 and 167:
AJAX Chat}}xmlHttpGetMessages.send(
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
Page 216 and 217:
AJAX GridCREATE TABLE product(produ
Page 218 and 219:
AJAX Grid}// execute the queryif ($
Page 220 and 221:
AJAX Grid// clear any output that h
Page 222 and 223:
AJAX Grid212// the id of the grid d
Page 224 and 225:
AJAX Grid// handle receiving the se
Page 226 and 227:
AJAX Grid// handle receiving a resp
Page 228 and 229:
AJAX GridAs usual on the server, we
Page 230 and 231:
AJAX Grid220}{}stylesheetDoc = crea
Page 233 and 234:
9AJAX RSS ReaderIn the last few yea
Page 235 and 236:
Chapter 9Figure 9.1: Managing RSS S
Page 237 and 238:
header('Pragma: no-cache');header('
Page 239 and 240:
Chapter 9Loading feed...About the A
Page 241 and 242:
Chapter 9}// continue if the proces
Page 243 and 244:
Chapter 9}width: 410px;background-c
Page 245 and 246:
And finally, we send the HTTP reque
Page 247 and 248:
10AJAX Drag and DropWhen drag-and-d
Page 249 and 250:
Chapter 10The Prototype features ar
Page 251 and 252:
Chapter 10When dropping a task on t
Page 253 and 254:
Chapter 10DROP HERE TO DELETE7. Cre
Page 255 and 256:
header('Expires: Fri, 25 Dec 1980 0
Page 257 and 258:
Chapter 10}}}else if (action =="del
Page 259 and 260:
Chapter 1011. Load http://localhost
Page 261 and 262:
details are saved using a cache sys
Page 263:
Chapter 10SummaryThis is it! You've
Page 266 and 267:
Preparing Your Working EnvironmentT
Page 268 and 269:
Preparing Your Working EnvironmentA
Page 270 and 271:
Preparing Your Working Environment1
Page 272 and 273:
Preparing Your Working EnvironmentA
Page 274 and 275:
Preparing Your Working Environment6
Page 276 and 277:
IndexAabort() method, XMLHttpReques
Page 278 and 279:
exception handling, JavaScript, 43
Page 280 and 281:
PHP Parameters and Error Handlingre
Page 282:
updateChart() function, realTimeCha
show all

AJAX and PHP

Create successful ePaper yourself

Delete template?

Save as template?