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Learn JavaScript and Ajax with W3Schools / Выучи Javascript и Ajax с W3Schools

Год: 2010
Автор: W3Schools
Издательство: Wiley
ISBN: 0470611944
Язык: Английский
Формат: PDF
Качество: Изначально компьютерное (eBook)
Количество страниц: 267

Описание:

Learn JavaScript and Ajax with W3Schools

- Add JavaScript to HTML
- Create Objects and Cookies
- Build Ajax applications
- Easy to understand
- Try-it-yourself examples
- Full references
- Attractive two-color print

Fast, focused instruction for beginning Web developers

W3Schools.com is the number one online education source for beginning Web developers. This attractive two-color book contains concise, highly focused tutorials in the proven W3Schools instructional format, with an easy-to-use reference of JavaScript Objects and the HTML DOM included. Novice developers will quickly learn to create interactive Web pages using the most popular Web scripting language.

W3Schools is the top Google search result for instruction on JavaScript, HTML, CSS, and other key Web technologies; this book presents W3Schools tutorials in an easy-to-follow format for quick learning

Features clear examples, simple explanations, and a thorough reference section covering JavaScript Objects and the HTML DOM

Covers statements and comments; variables, operators, and comparisons; if…then statements; pop-up boxes; events and try…catch; objects, strings, arrays, and Booleans; cookies, validation, and timing; Ajax requests and XMLHTTP requests; Ajax suggest, and more

Designed to get beginning Web developers up and running as quickly as possible, Learn JavaScript and Ajax with W3Schools presents a proven, highly focused course of instruction in an easy-to-use format.

Кратко о книге:

Книга от знаменитой W3Schools. Информация дана практически та же, что и на их офф.сайте. Все кратко и четко изложено, этакая шпаргалка по предмету. Легко и свободно просматривается, если уже есть опыт программирования в другой области.

Introduction .................................................1
JavaScript ........................................................................................... 1
AJAX.................................................................................................. 3
How To Use This Book ...................................................................... 4

Section I: JavaScript Basic .............................7
CHAPTER 1: JavaScript How To and Where To .............. 9
How To Put a JavaScript into an HTML Page .................................... 9
How to Handle Simple Browsers...................................................... 12
Where to Put the JavaScript ............................................................. 12
Using an External JavaScript ............................................................ 15

CHAPTER 2: JavaScript Statements and Comments...... 16
JavaScript Statements ....................................................................... 16
JavaScript Comments ....................................................................... 18

CHAPTER 3: JavaScript Variables .................................. 23
Do You Remember Algebra from School?......................................... 23
JavaScript Variables .......................................................................... 23
Declaring (Creating) JavaScript Variables ......................................... 25
Assigning Values to Undeclared JavaScript Variables ......................... 25
Redeclaring JavaScript Variables ....................................................... 26
JavaScript Arithmetic ....................................................................... 26

CHAPTER 4: JavaScript Operators ................................ 27
JavaScript Arithmetic Operators ....................................................... 27
JavaScript Assignment Operators...................................................... 28
The + Operator Used on Strings....................................................... 28
Adding Strings and Numbers ........................................................... 28

CHAPTER 5: JavaScript Comparisons ........................... 30
Comparison Operators..................................................................... 30
How to Use Comparisons ................................................................ 31
Logical Operators ............................................................................. 31
Conditional Operator....................................................................... 31

CHAPTER 6: JavaScript If...Else Statements .................. 32
Conditional Statements .................................................................... 32
if Statement...................................................................................... 33
if...else Statement ............................................................................. 34
if...else if...else Statement.................................................................. 36

CHAPTER 7: JavaScript Loops ...................................... 39
The for Loop.................................................................................... 39
The while Loop................................................................................ 41
The do...while Loop ......................................................................... 43

CHAPTER 8: Additional JavaScript Flow Control Statements .............46
The break Statement ........................................................................ 46
The continue Statement ................................................................... 47
JavaScript for...in Statement ............................................................. 48
JavaScript switch Statement.............................................................. 50

CHAPTER 9: JavaScript Popup Boxes............................ 53
Popup Boxes..................................................................................... 53

CHAPTER 10: JavaScript Functions .............................. 58
How to Define a Function................................................................ 58
JavaScript Function Examples .......................................................... 59
The return Statement ....................................................................... 62
The Lifetime of JavaScript Variables ................................................. 63

CHAPTER 11: JavaScript Events.................................... 64
onLoad and onUnload ..................................................................... 64
onFocus, onBlur, and onChange ...................................................... 65
onSubmit ......................................................................................... 65
onMouseOver and onMouseOut...................................................... 66
onClick ............................................................................................ 66

CHAPTER 12: Javascript try...catch and throw Statements............. 67
JavaScript—Catching Errors ............................................................ 67
The try...catch Statement.................................................................. 67
The throw Statement........................................................................ 70

CHAPTER 13: JavaScript Special Characters and Guidelines ............ 73
Insert Special Characters................................................................... 73
JavaScript Is Case Sensitive ............................................................... 74
White Space ..................................................................................... 74
Break up a Code Line....................................................................... 74

Section II: JavaScript Objects ......................77
CHAPTER 14: JavaScript Objects Intro......................... 79
Object-Oriented Programming ........................................................ 79
Properties ......................................................................................... 79
Methods ........................................................................................... 80

CHAPTER 15: JavaScript String Object......................... 81
String Object.................................................................................... 81
Examples .......................................................................................... 82

CHAPTER 16: JavaScript Date Object........................... 88
Create a Date Object........................................................................ 88
Set Dates .......................................................................................... 89
Compare Two Dates......................................................................... 89
Examples .......................................................................................... 90

CHAPTER 17: JavaScript Array Object.......................... 95
What Is an Array?............................................................................. 95
Create an Array ................................................................................ 96
Access an Array ................................................................................ 96
Modify Values in an Array ................................................................ 96
Examples .......................................................................................... 97

CHAPTER 18: JavaScript Boolean Object ................... 107
Create a Boolean Object................................................................. 107
Examples ........................................................................................ 108

CHAPTER 19: JavaScript Math Object........................ 110
Math Object .................................................................................. 110
Mathematical Constants................................................................. 110
Mathematical Methods................................................................... 111
Examples ........................................................................................ 112

CHAPTER 20: JavaScript RegExp Object .................... 115
What Is RegExp? ............................................................................ 115
RegExp Modifiers........................................................................... 116
test()............................................................................................... 118
exec().............................................................................................. 119

Section III: JavaScript Advanced................121
CHAPTER 21: JavaScrip Browser Detection ................ 123
Browser Detection.......................................................................... 123
The Navigator Object .................................................................... 124

CHAPTER 22: JavaScript Cookies ............................... 129
What Is a Cookie? .......................................................................... 129
Create and Store a Cookie .............................................................. 130

CHAPTER 23: JavaScript Form Validation .................. 134
Required Fields............................................................................... 134
E-mail Validation ........................................................................... 136

CHAPTER 24: JavaScript Animation ........................... 138
The HTML Code .......................................................................... 138
The JavaScript Code....................................................................... 139
The Entire Code ............................................................................ 139

CHAPTER 25: JavaScript Image Maps......................... 141
HTML Image Maps ....................................................................... 141
Adding Some JavaScript ................................................................. 142

CHAPTER 26: JavaScript Timing Events ..................... 144
The setTimeout() Method.............................................................. 144
The clearTimeout() Method........................................................... 149

CHAPTER 27: Create Your Own Objects with JavaScript.................151
JavaScript Objects .......................................................................... 151
Creating Your Own Objects ........................................................... 152

Section IV: AJAX Basic...............................157
CHAPTER 28: AJAX XMLHttpRequest...................... 159
AJAX Uses the XMLHttpRequest Object....................................... 159
The XMLHttpRequest Object ....................................................... 159
Your First AJAX Application .......................................................... 160

CHAPTER 29: AJAX Browser Support ........................ 163
The XMLHttpRequest ................................................................... 163
All Together Now ........................................................................... 164

CHAPTER 30: AJAX—The XMLHttpRequest Object’s Methods and Properties... 166
Important Methods ........................................................................ 166
Sending an AJAX Request to a Server............................................. 167
Important Properties ...................................................................... 167
The responseText Property ............................................................. 167
XMLHttpRequest Open—Using False........................................... 167
XMLHttpRequest Open—Using True ........................................... 168
The readyState Property ................................................................. 168
The onreadystatechange Property ................................................... 169

CHAPTER 31: AJAX Server......................................... 170
XMLHttpRequest Object Can Request Any Data .......................... 170
Requesting Files ............................................................................. 170
Submitting Forms .......................................................................... 171

Section V: AJAX Advanced ........................173
CHAPTER 32: AJAX Suggest ...................................... 175
The HTML Form .......................................................................... 175
The showHint() Function .............................................................. 176
The GetXmlHttpObject() Function............................................... 177
The stateChanged() Function......................................................... 177
AJAX Suggest Source Code ............................................................ 178

CHAPTER 33: AJAX Database Example...................... 184
The AJAX JavaScript ...................................................................... 185
The AJAX Server Page.................................................................... 186

CHAPTER 34: AJAX XML Example ........................... 188
The AJAX JavaScript ...................................................................... 189
The AJAX Server Page.................................................................... 190
The XML File ................................................................................ 191

CHAPTER 35: AJAX ResponseXML Example ............. 198
The AJAX JavaScript ...................................................................... 199
The AJAX Server Page.................................................................... 201
Appendixes ..............................................203
Appendix A: JavaScript Objects ....................................................................... 203
Appendix B: HTML DOM Objects................................................................214
Index ........................................................ 245