Học JavaScript qua ví dụ part 50 docx
Học JavaScript qua ví dụ part 50 docx
... Introduction to Event Handlers
JavaScript reacts to events. We have been talking about events since Chapter 1, “Intro-
duction to JavaScript, ” because events are inherently part of almost all Web pages ... subsequent word is capitalized. Unless the event is
being used as a method in a JavaScript program (see the section JavaScript Object Meth-
ods and Events” on page 462), it is not...
Học JavaScript qua ví dụ part 17 docx
... 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 ... recursion:
recursion: See recursion.
This definition says it all! JavaScript sup-
ports recursion. So what is it? Have you
ever taken apart a Russian doll? Open up
the outside doll and...
Học JavaScript qua ví dụ part 22 docx
...
<body bgcolor="lightblue">
<script type="text /javascript& quot;>
8 myBook = new book(" ;JavaScript by Example", "Ellie",
"Prentice Hall");
9 ... 8.2 explained that unlike Java and C++, JavaScript doesn’t have a class mech-
anism per se, but inheritance involves reusing or extending a class. With JavaScript we
can simulate a clas...
Học JavaScript qua ví dụ part 35 docx
... 310.)
FORMAT
JavaScript: window.location.href = "URL";
JavaScript: window.location.replace("URL");
EXAMPLE
JavaScript: window.location.href = "http://www.legos.com/";
JavaScript: ... type="text /javascript& quot;>
4 document.write(screen.availWidth);
</script>
</td>
</tr>
<tr>
<td>Color Depth</td>
<td>
<...
Học JavaScript qua ví dụ part 68 docx
... colorText(){
div1.style.left = 50;
div1.style.top = 50;
6 div1.className="red";
div2.style.left = 100;
div2.style.top = 100;
7 div2.className="blue";
div3.style.left = 150;
div3.style.top = 150;
8 ... Where Does JavaScript Fit In? 607
4 a { font-family: cursive;
font-size: 18pt;
font-weight: bold;
color:white;
position: absolute;
left: 60px;
}
5 img { positio...
Học JavaScript qua ví dụ part 86 docx
... Anchor</title></head>
<body>
<script type="text /javascript& quot;>
1 var reg_expression = /50$ /;
2 var textString=prompt("Type a string of text",""); ... in 50, the regex test method returns true; otherwise false.
EXAMPLE 17.29
<html>
<head><title>Anchors</title></head>
<body>
<script type="tex...
Học JavaScript qua ví dụ part 94 docx
...
"salary": 500 00,
"enlisted": true
}
EXAMPLE (SAMPLE CODE)
Example: (JavaScript array)
var friends = [ “John”, “Jane”, “Niveeta”, “Su” ];
Example: (JavaScript object literal)
var ... Ajax request object. Next Ajax must convert the JSON text into a JavaScript
object (or array). To accomplish this, we can use the JavaScript built-in eval() function,
as long as sec...
Học JavaScript qua ví dụ part 96 docx
... WoweBook.Com
ptg
850 Chapter 18 • An Introduction to Ajax (with JSON)
If you want to test your pages in Internet Explorer, Opera, and Safari, the solution is
Firebug Lite, a JavaScript file you ... page you are watching. By selecting the feature of the
program you want to check (i.e., HTML, JavaScript, the DOM, and the NET)
you can scroll through the program code looking for that.
Ste...
Học JavaScript qua ví dụ part 1 potx
... interpreted by a JavaScript engine that lives in the browser.
JavaScript is not HTML, but JavaScript code can be embedded in an HTML docu-
ment and is contained within HTML tags. JavaScript has ... until a JavaScript
opening tag is read, at which time the JavaScript interpreter takes over. When the closing
JavaScript tag is reached, the HTML processing continues.
1. But the cr...
Học JavaScript qua ví dụ part 2 ppt
... ptg
8 Chapter 1 • Introduction to JavaScript
1.7 JavaScript and Its Role in Web
Development
When you start learning JavaScript, JavaScript code will be embedded directly in the ... Introduction to JavaScript
Some of the events that JavaScript can handle are listed in Table 1.1.
1.9 Standardizing JavaScript and the W3C
ECMAScript, which is more commonly known by the name JavaScr...