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ví dụ mvc2 model userinfo java

Học JavaScript qua ví dụ part 1 potx

Học JavaScript qua dụ part 1 potx

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... 2 Chapter • Introduction to JavaScript JavaScript handled by a browser is called client-side JavaScript Although JavaScript is used mainly as a client-side scripting ... Not JavaScript is not Java Java is to JavaScript what Car is to Carpet”2 Well, that quote might be a little extreme, but suggests that these are two very different languages Java was developed ... Microsystems JavaScript was developed at Netscape Java applications can be independent of a Web page, whereas JavaScript programs are embedded in a Web page and must be run in a browser window.3 Java...
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Học JavaScript qua ví dụ part 2 ppt

Học JavaScript qua dụ part 2 ppt

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... 1.4 1.7 • Introduction to JavaScript Scrolling text with JavaScript (output of Example 1.1) JavaScript and Its Role in Web Development When you start learning JavaScript, JavaScript code will be ... blurred JavaScript programs are often stored in external files, which are then put in libraries where other programmers can share them See http://JavaScriptlibraries.com/ Unobtrusive JavaScript ... unobtrusive JavaScript,” and you will hear or read about it once you have started really using JavaScript, it refers to the three layers we just discussed It is a technique to completely separate JavaScript...
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Học JavaScript qua ví dụ part 3 pps

Học JavaScript qua dụ part 3 pps

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... Chapter • Introduction to JavaScript Figure 1.9 Output from Example 1.3 1.10.1 Versions of JavaScript JavaScript has a history Invented by Netscape, the first version was JavaScript 1.0 It was new ... comparable to JavaScript called JScript Table 1.3 lists versions of both JavaScript and JScript For a discussion of JavaScript versions and development see http://ejohn.org/blog/versions-of-JavaScript/ ... http://ejohn.org/blog/versions-of-JavaScript/ Table 1.3 JavaScript Versions JavaScript or JScript Version Browsers Supported JavaScript 1.0 1996 Netscape Navigator 2.0, Internet Explorer 3.0 JavaScript 1.1 1996 Netscape...
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Học JavaScript qua ví dụ part 6 pptx

Học JavaScript qua dụ part 6 pptx

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... JavaScript: expression EXAMPLE 2.4 JavaScript: + Figure 2.9 Internet Explorer and the JavaScript: protocol Figure 2.10 Mozilla Firefox and the JavaScript: protocol Figure 2.11 Opera and the JavaScript: ... the Library of WoweBook.Com 2.6 JavaScript and Old or Disabled Browsers 2.6 47 JavaScript and Old or Disabled Browsers 2.6.1 Hiding JavaScript from Old Browsers Is JavaScript Enabled? The answer ... browser supports JavaScript does not mean that everyone has JavaScript enabled There are also some older text browsers that don’t support JavaScript, but today it’s more likely that JavaScript has...
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Học JavaScript qua ví dụ part 7 ppt

Học JavaScript qua dụ part 7 ppt

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... called literals, remain fixed JavaScript variables can be assigned three types of data: • numeric • string • Boolean Computer programming languages like C++ and Java require that you specify ... EXAMPLE 3.2 Escape Sequences
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Học JavaScript qua ví dụ part 8 ppsx

Học JavaScript qua dụ part 8 ppsx

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... languages JavaScript, conversely, is a dynamically or loosely typed language, meaning that you not have to specify the data type of a variable In fact, doing so will produce an error With JavaScript, ... Remember, strongly typed languages like C++ and Java require that you specify the type of data you are going to store in a variable when you declare it, but JavaScript is loosely typed It doesn’t expect ... variable You can assign a string to a variable and later assign a numeric value JavaScript doesn’t care and at runtime, the JavaScript interpreter will convert the data to the correct type Consider...
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Học JavaScript qua ví dụ part 9 pptx

Học JavaScript qua dụ part 9 pptx

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... Keyword const NOON = 12; const FREEZING = 32; // Can't change document.write("Farenheit ... the run of the program Caveat: Firefox, Opera, Safari, Netscape, and many browsers support the JavaScript reserved keyword const to declare constants (see Figure 3.7) It is important to note ... Variables What You Should Know This chapter introduced you to the fundamental building blocks of the JavaScript language; that is, the kinds of data that can be stored and manipulated within a program,...
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Học JavaScript qua ví dụ part 10 pps

Học JavaScript qua dụ part 10 pps

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... Using JavaScript alert box var message1="Match your Quotes and "; var message2="Beware of Little Bugs "; alert("Welcome to\nJavaScript Programming!"); ... EXPLANATION The tag starts the JavaScript program The JavaScript engine starts executing code from here until the closing tag JavaScript does not understand HTML tags unless they are ... type="text/javascript"> document.write("It's a bird, "); document.write("It's a plane,"); alert("It's Superman!"); EXPLANATION The tag starts the JavaScript...
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Học JavaScript qua ví dụ part 15 pot

Học JavaScript qua dụ part 15 pot

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... is used with JavaScript objects Instead of iterating the statements based on a looping condition, it operates on the properties of an object This loop is discussed in Chapter 9, “JavaScript Core ... Conditions 6.9 Nested loops month = 8; if (month == 1) { alert("January");...
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Học JavaScript qua ví dụ part 16 pptx

Học JavaScript qua dụ part 16 pptx

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... Link A function can be called directly from a link, by using the JavaScript pseudoprotocol, JavaScript:, instead of a normal URL The JavaScript: protocol and the function call are placed within quotes ... from JavaScript In the first examples of this chapter, functions were defined in one JavaScript script and called from another Although it is valid to define and call the function from the same JavaScript ... itself, they can go anywhere Function definitions are often stored in external JavaScript files or libraries (see “JavaScript from External Files” on page 22 of Chapter 1) To define a function,...
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Học JavaScript qua ví dụ part 17 docx

Học JavaScript qua dụ part 17 docx

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... triggered and JavaScript will execute the anonymous function statements, in this case an alert box EXAMPLE 7.7 Anonymous Function var ... You will see in future chapters that JavaScript also uses closures with event handling and information hiding Douglas Crawford writes (http://www.crockford.com/JavaScript/private.html), “The pattern ... EXPLANATION A function called mileage() is defined in this JavaScript program located between the tags of the document The return statement sends back...
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Học JavaScript qua ví dụ part 18 pptx

Học JavaScript qua dụ part 18 pptx

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... returned value? Did you define and call the function from within a JavaScript program? Figure 7.17 shows function errors displayed by the JavaScript Error Console in Firefox This is a very useful debugging ... for( n=0; n < 20; n++){ value = fib(n); document.write("" + value + ""); } ... 164 Chapter • EXAMPLE Functions 7.11 Recursion function upDown(num){ document.write("Level " + num + "");...
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Học JavaScript qua ví dụ part 19 pps

Học JavaScript qua dụ part 19 pps

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... link function addem(){ var n = 2; var y = 3; document.write( n + y , ""); } Click here ... exception From the Library of WoweBook.Com 7.2 Debugging Techniques 169 Table 7.1 Primary Error Types (JavaScript 1.5+) Error Name When It Is Raised EvalError If the eval() function is used in an incorrect ... invalid parameters decodeURI() EXAMPLE 7.12 Try/Catch try { alert("Current balance is $:" + get_balance()); } catch(err) { alert("Something...
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Học JavaScript qua ví dụ part 20 pps

Học JavaScript qua dụ part 20 pps

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... elements, and this tree-like model is also used to represent the browser and its components (BOM; see Chapter 10) JavaScript objects and user-defined objects use this same model When accessing an ... User-Defined Functions 8.2.1 What Is a Class? JavaScript ain’t got no class! If you are familiar with Java or C++ you may be wondering how to create a class in JavaScript A class is a template or blueprint ... Syntax An object model is a hierarchical tree-like structure used to describe all of the components of an object (see Figure 8.1) For example, in Chapter 1, “Introduction to JavaScript,” we discussed...
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Học JavaScript qua ví dụ part 21 pps

Học JavaScript qua dụ part 21 pps

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... this.pagenumber ; return this.pagenumber; } var myBook = new Book("JavaScript by Example", "Ellie Quigley", "Prentice Hall" ); // Create new object ... instance of the Book class 8.5 User-defined objects function Book(title, author, publisher){ // Receiving // parameters this.pagenumber=0; ... 8.2 Classes and User-Defined Functions EXAMPLE 183 8.4 function Book(){ // Create a Book class this.title = "The White Tiger"; // Properties...
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Học JavaScript qua ví dụ part 22 docx

Học JavaScript qua dụ part 22 docx

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... Section 8.2 explained that unlike Java and C++, JavaScript doesn’t have a class mechanism per se, but inheritance involves reusing or extending a class With JavaScript we can simulate a class ... and the new keyword And to implement inheritance JavaScript extends a the class with a prototype (For those of you who are Java or C++ programmers, JavaScript does not use keywords like extended, ... return result; } myBook = new book("JavaScript by Example", "Ellie", "Prentice Hall"); document.write("" +...
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Học JavaScript qua ví dụ part 23 potx

Học JavaScript qua dụ part 23 potx

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... so, JavaScript retrieves the property If the property has not been defined, then JavaScript looks at the object’s prototype to see if the property is defined there If it is not defined there, JavaScript ... retrieve a property for a Book object, JavaScript would look up the property in the following order: The object itself The Book.prototype The Object.prototype First JavaScript starts with a Book object ... available to all Book objects When JavaScript tries to retrieve the value of the category property, the property was not directly assigned in the constructor function JavaScript checks to see if a...
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Học JavaScript qua ví dụ part 24 pot

Học JavaScript qua dụ part 24 pot

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... before talking about JavaScript’s core objects and DOM objects is to give you an understanding of the terminology and syntax and how objects relate to each other in an object model Now you should ... constructor function called Book defines the properties and methods for a Book class (Book is a JavaScript representation of a class.) The constructor function has a prototype object containing ... function will be added as a method to the Book class and available to all objects in that class JavaScript creates only one copy of the function and all book objects will point to that copy A...
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Học JavaScript qua ví dụ part 25 ppsx

Học JavaScript qua dụ part 25 ppsx

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... type="text/javascript"> for(var i in book){ document.write("book[" + i + "] "+ book[i] + ""); } From the Library of WoweBook.Com 216 Chapter • JavaScript ... Pets var pet = [ "Fido", "Slinky", "Tweetie","Wanda" ]; for(var i in ... WoweBook.Com 218 Chapter EXAMPLE • JavaScript Core Objects 9.3 The Array Object An Array of Numbers var years = new...
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