Học JavaScript qua ví dụ part 46 ppt
Học JavaScript qua ví dụ part 46 ppt
...
associative array. Any object, not just the Array object, can use the square bracket no-
tation to reference its properties. See Chapter 9, JavaScript Core Objects.”
Continues
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434 ... to the src property of the JavaScript
images[] array.
EXAMPLE 12.4
<html>
<head><title>HTML Images</title>
<script type="text /javas...
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...
Học JavaScript qua ví dụ part 6 pptx
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46 Chapter 2 • Script Setup
2.5.3 The JavaScript: URL Protocol
For simple debugging or testing code, you can use the URL pseudoprotocol, JavaScript:
followed by any valid JavaScript ... 2.10, and 2.11.
FORMAT
JavaScript: expression
EXAMPLE 2.4
JavaScript: 5 + 4
Figure 2.9 Internet Explorer and the JavaScript: protocol.
Figure 2.10 Mozilla Firefox and the JavaScript...
Học JavaScript qua ví dụ part 7 ppt
... get an error.) The
word undefined is not a keyword in JavaScript. If compared with the == equality opera-
tors, null and undefined are equal, but if compared with the identity operator, they ... change throughout the run of a program whereas
constants, also called literals, remain fixed. JavaScript variables can be assigned three
types of data:
• numeric
• string
• Boolean
Computer ......
Học JavaScript qua ví dụ part 9 pptx
... programming languages use a
special syntax to define a constant to distinguish it from a variable. JavaScript declares
constants with the const type (which replaces var) and the name of the constant ... + operator is used, it could mean
the concatenation of two strings or addition of two numbers. JavaScript looks at
both of the operands. If one is a string and one is a number, the num...
Học JavaScript qua ví dụ part 16 pptx
... ptg
7.1 What Is a Function? 151
Calling a Function from JavaScript. In the first examples of this chapter, func-
tions were defined in one JavaScript script and called from another. Although it ...
<body></body> tags. Example 7.2 called a function from one JavaScript program within
the body, but defined the function in another JavaScript program within the head.
Finally,...
Học JavaScript qua ví dụ part 18 pptx
... 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 there’s another ... "center">
<table border="1">
<tr>
<script type = "text /javascript& quot;>
7 for( n=0; n < 20; n++){
8 value = fib(n);
document.write(&...
Học JavaScript qua ví dụ part 29 ppt
... JavaScript Core Objects
Search and Replace Methods. In word processing software you’ll always find
some mechanism to search for patterns in strings and to replace one string with another.
JavaScript ... substring
of JavaScript. When a user enters information, you want to see if a certain pattern of
characters exist, such as the @ in an e-mail address or a zip code in an address. Java...
Học JavaScript qua ví dụ part 31 ppt
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10.1 JavaScript and the Browser Object Model 277
complete JavaScript program ready to copy and paste into your editor. Save it as a .js file
and then include it in your JavaScript code ... type supports, such as
.rpm, .wav, .pdf, and so on. Partial output is shown in Figure 10.15.
Figure 10.15 MIME types: Output from Example 10.6 (partial list).
From the Library of W...
Học JavaScript qua ví dụ part 34 ppt
... 310.)
FORMAT
JavaScript: window.location.href = "URL";
JavaScript: window.location.replace("URL");
EXAMPLE
JavaScript: window.location.href = "http://www.legos.com/";
JavaScript: ... href=" ;JavaScript: setBgColor('yellow')">yellow</a>
<br />
<a href=" ;JavaScript: setBgColor('green')">green</a>...