AJAX - The Complete Reference

Chapter 4: Data Formats 121 PART I but if data sizes are large, the wordiness of the packaging format could be an important cons ...

122 Part I: Core Ideas To convert a value into the appropriate x-www-form-urlencoded format, it is suggested that JavaScript’s e ...

Chapter 4: Data Formats 123 PART I because the associated character such as left and right brackets and the comma ( [ , ] ) are ...

124 Part I: Core Ideas else queryString += key + "=" + encodeValue(val) + "&"; } } //remove trailing & if (!indexString ...

Chapter 4: Data Formats 125 PART I The benefit of this format is that everything on the server side is decoded automatically jus ...

126 Part I: Core Ideas Form Serialization We know from previous sections that when browsers send form data to the server, the va ...

Chapter 4: Data Formats 127 PART I case "textarea": formValues = encode(formValues, fieldName, currentField.value, encoding); br ...

128 Part I: Core Ideas keywords for other data formats such as JSON to trigger an alternate scheme as we will demonstrate later. ...

Chapter 4: Data Formats 129 PART I A few examples showing usage are given next: var payload = ""; payload = serializeForm(contac ...

130 Part I: Core Ideas xhr.setRequestHeader("Content-Type", "text/xml"); xhr.onreadystatechange = function(){handleResponse(xhr) ...

Chapter 4: Data Formats 131 PART I for (var i=0;i<versions.length;i++) { try { xmlDoc = new ActiveXObject(versions[i]); break ...

132 Part I: Core Ideas Now this XML document must be converted into a string in order to transmit to the server. Once again, the ...

Chapter 4: Data Formats 133 PART I string number object array true false null value Looking closely at a string, you can see tha ...

134 Part I: Core Ideas Legal JSON number values have quite a range of forms, just as they do in JavaScript: 3 -1968 200001 0.9 ...

Chapter 4: Data Formats 135 PART I As seen in the previous, more complex JSON examples, white space can be used liberally and wi ...

136 Part I: Core Ideas $json = new Services_JSON(); $jsonObject = $json->decode($payloadString); } You can run the complete e ...

Chapter 4: Data Formats 137 PART I The two structures can, of course, be combined to create a more complex data structure: [ { N ...

138 Part I: Core Ideas The transmission is shown next and can be found at http://ajaxref.com/ch4/ yamlrequest.html. On the serve ...

Chapter 4: Data Formats 139 PART I when using a comma as separator, how many pieces are there? As long as the content is encoded ...

140 Part I: Core Ideas Encoded Text As the final example of the endless possibilities for data formats in an Ajax application, w ...