Học JavaScript qua ví dụ part 9 pptx
Học JavaScript qua ví dụ part 9 pptx
... a variable. JavaScript declares
constants with the const type (which replaces var) and the name of the constant is in
</body>
</html>
Output:
3 25 cats
4 almost 25
5 29
6 510 years
7 ... + 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 number...
Học JavaScript qua ví dụ part 6 pptx
... Figures 2 .9, 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: ... Java-
Script 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...
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
...
<script type = "text /javascript& quot;>
7 for( n=0; n < 20; n++){
8 value = fib(n);
document.write("<td>" + value + "</td>");
}
9 alert("Function ... 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 47 pptx
... href="spring5.jpg"onclick=
"this.href=&apos ;JavaScript: void(0)';this.disable=true">
<area shape="rect" href="spring2.jpg"onclick=
"this.href=&apos ;JavaScript: void(0)';this.disable=true">
<area ...
"this.href=&apos ;JavaScript: void(0)';this.disable=true">
<area shape="rect" href="...
Học JavaScript qua ví dụ part 48 pptx
... go to http://www.dynamicdrive.com/dynamicindex9/noright2.htm for free Java-
Script code.
12.5.1 A Simple Slideshow with Controls
Example 12.10 is a JavaScript program that cycles through a selection ... idea behind JavaScript animation. Instead of flip-
ping through a pad of drawings, the stick man drawings can be scanned into your com-
puter as a set of images as shown in Figure 12.26....
Học JavaScript qua ví dụ part 61 pptx
... ptg
548 Chapter 14 • Introduction to CSS (Cascading Style Sheets) with JavaScript
border-left-width thin, medium, thick, 3em All
border-right <border-right-width> ... Library of WoweBook.Com
ptg
550 Chapter 14 • Introduction to CSS (Cascading Style Sheets) with JavaScript
14.5 Types of Style Sheets
There are several ways to define style sheets within a document:
1. ... type="te...
Học JavaScript qua ví dụ part 66 pptx
... CSS styles and JavaScript to the DOM ele-
ments to create what will effectively make it possible to manipulate, create, and delete
any part of your page on the fly.
14.11.2 How JavaScript Views ... to create a white square, size 50 pixels × 50 pixels, positioned
above the blue rectangle, z-index of 3, or on top of it in the stacking order. See Fig-
ure 14. 29.
Figure 14. 29 Using t...
Học JavaScript qua ví dụ part 85 pptx
...
in this case, one or more lowercase letters. JavaScript provides a number of quantifiers
as shown in the Table 17 .9.
The Greed Factor. Normally quantifiers are “greedy”; that is, they match ... [0 -9] , it can be represented as \d, and the alternative for rep-
resenting a nonnumber [^0 -9] is \D. Metasymbols are easier to use and to type than
metacharacters.
<script type="text...