Tài liệu Javascript bible Chapter 43 ppt
Tài liệu Javascript bible_ Chapter 43 ppt
... </P>). Each of these objects has a set of properties,
methods, and event handlers.
43
43
CHAPTER
✦ ✦ ✦ ✦
In This Chapter
The Internet Explorer
document object
model
Working with the
style object ... width:1;}
</STYLE>
<SCRIPT LANGUAGE=" ;JavaScript& quot;>
//var engaged = false
var offsetX = 0
var offsetY = 0
(continued)
902
Part IV ✦ Putting JavaScript to Work
L...
Tài liệu Javascript bible_ Chapter 17 pptx
... handler, define an empty function and set the URL to that
343
Chapter 17 ✦ Link and Anchor Objects
empty JavaScript function (such as
HREF= javascript: doNothing()”
).
Starting with Navigator 3, you ... direct the URL to a JavaScript function. The
URL
javascript: functionName()
is a valid location parameter for the
HREF
attribute (and not just in the link object). Using the
javascr...
Tài liệu Javascript bible_ Chapter 27 ppt
... introduction to data types and values in Chapter 6’s
tutorial scratched the surface of JavaScript s numeric
and Boolean powers. In this chapter, you look more closely at
JavaScript s way of working with ... detail in Chapter
32), JavaScript includes more advanced mathematical powers that are accessed in
a way that may seem odd to you if you have not programmed in true object-
Note
57...
Tài liệu Javascript bible_ Chapter 31 pptx
... possible in JavaScript.
JavaScript control structures follow along the same lines of
many programming languages, particularly with additions
made in Navigator 4 and Internet Explorer 4 (for JavaScript
1.2). ... condition to test,
and then the statements that execute if the condition yields a
31
31
CHAPTER
✦ ✦ ✦ ✦
In This Chapter
How to branch script
execution down
multiple paths
Loop...
Tài liệu Javascript bible_ Chapter 32 pptx
... representations of two operands
32
32
CHAPTER
✦ ✦ ✦ ✦
In This Chapter
Understanding
operator categories
Role of operators in
script statements
✦ ✦ ✦ ✦
674
Part III ✦ JavaScript Object and Language Reference
Boolean ... the user’s data entry has been validated
enough for JavaScript to know that the entry is a number. Now the function must
677
Chapter 32 ✦ JavaScript Operators
check...
Tài liệu Javascript bible_ Chapter 34 pptx
... Netscape’s JavaScript
Debugger, described in Chapter 46). The methods are
watch() and unwatch().
The
watch() method instructs JavaScript to keep an eye on a particular property
in an object (any JavaScript- accessible ... See Chapter 13 for details on this
convenient way to share utility functions among many documents.
714
Part III ✦ JavaScript Object and Language Reference
Custo...
Tài liệu Javascript bible_ Chapter 35 pptx
... another type.
35
35
CHAPTER
✦ ✦ ✦ ✦
In This Chapter
Converting strings
into object references
Converting strings to
numbers for math
Adding comments
to scripts
✦ ✦ ✦ ✦
728
Part III ✦ JavaScript Object ... can be used anywhere in a script. If you’ve
read earlier chapters, you have been introduced to many of
these functions and statements. This chapter is presented as
a convenient plac...
Tài liệu Javascript bible_ Chapter 37 ppt
... the
37
37
CHAPTER
✦ ✦ ✦ ✦
In This Chapter
Validating data as it
is being entered
Validating data
immediately prior to
submission
Organizing complex
data validation tasks
✦ ✦ ✦ ✦
768
Part IV ✦ Putting JavaScript ... for Data Validation
I devoted an entire chapter to the subject of data validation because it
represents the one area of error checking that almost all JavaScript authors...
Tài liệu Javascript bible_ Chapter 38 pptx
... or the JavaScript code (JavaScript s
string.split() and
array.join() methods help a great deal here).
786
Part IV ✦ Putting JavaScript to Work
Data type conversions
The example in this chapter ... back to JavaScript, that passed object is converted to its original
JavaScript object type. But objects of other classes are passed as their native
objects wrapped in JavaScript “clothin...
Tài liệu Javascript bible_ Chapter 8 pptx
... script function. The technique involves a pseudo-URL
called the
javascript: URL. If you place the name of a function after the
javascript: URL, a scriptable browser runs that function. So as ... from the function. Remember this
javascript: URL technique for all
tags that include
HREF and SRC attributes: If an attribute accepts a URL, it can
accept this
javascript: URL as well. This can ....
Từ khóa: