Học JavaScript qua ví dụ part 82 ppsx
Học JavaScript qua ví dụ part 82 ppsx
... characters, the possibilities of fine-tuning your search are endless.
1. JavaScript 1.2, NES 3.0 JavaScript 1.3 added toSource() method. JavaScript 1.5, NES 6.0 added m flag,
nongreedy modifier, noncapturing ...
sed, and awk), you can move rapidly through the first section, because JavaScript regular
expressions, for the most part, are identical to those found in Perl.
A regular...
Học JavaScript qua ví dụ part 8 ppsx
... but JavaScript is loosely
typed. It doesn’t expect or allow you to specify the data type when declaring a variable.
You can assign a string to a variable and later assign a numeric value. JavaScript ... runtime, the JavaScript interpreter will convert the data to the correct type.
Consider the following variable, initialized to the floating-point value of 5.5. In each suc-
cessive st...
Học JavaScript qua ví dụ part 25 ppsx
... WoweBook.Com
ptg
213
chapter
9
JavaScript
Core Objects
9.1 What Are Core Objects?
Like an apple, JavaScript has a core, and at its core are objects. Everything you do in
JavaScript will be based ... create your own as we did in Chapter 8,
“Objects,” or use JavaScript s core objects. Core objects are built right into the language.
JavaScript provides built-in objects that deal with...
Học JavaScript qua ví dụ part 51 ppsx
...
bar” feature has been enabled for your browser. For Firefox, see Tools→Options→
Enable JavaScript Advanced JavaScript Settings).
11 An onFocus event handler is assigned to the <body> tag ... link is assigned an onClick event handler. When the user clicks the
link, the JavaScript code is executed. The pseudo JavaScript: protocol is followed
by a reference to the form and a reset...
Học JavaScript qua ví dụ part 56 ppsx
... The event Object 513
13.7.6 Key Events
The Handlers. As of JavaScript 1.2, keyboard actions, not just mouse actions, can be
detected in JavaScript programs. Now that we have discussed the event ... "+ y);
}
</script>
<head>
<body>
<div style="background-color:aqua;position:absolute;top:50px"
onMouseover="return getCoords(event);">
<h...
Học JavaScript qua ví dụ part 70 ppsx
... 627
15.6.3 JavaScript Properties to Represent HTML Attributes
The attributes of an HTML element are accessible as properties in JavaScript. Table 15.5
lists the properties available to JavaScript ... paragraph!<p/>
<p><big>
Continues
From the Library of WoweBook.Com
ptg
624 Chapter 15 • The W3C DOM and JavaScript
<script name="text /javascript& quot;>
4...
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...
Học JavaScript qua ví dụ part 3 pps
... Chapter 1 • Introduction to JavaScript
So where is JavaScript now? As of December 2009, the ECMA-262 Standard is in its 5th
edition. JavaScript is a dialect of ECMAScript, but JavaScript 1.8 is comparable ... JScript 5.5, 5.6, 5.7, 6
JavaScript 1.6 2006 Mozilla Firefox, Safari
JavaScript 1.7 2006 Mozilla Firefox, Safari, Google Chrome
JavaScript 1.8 2008 Mozilla Firefox
JavaSc...
Học JavaScript qua ví dụ part 6 pptx
... 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: protocol.
Figure ... 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 ha...