Tài liệu Javascript bible Chapter 37 ppt

... you can get some odd behavior with the interaction of the focus() method and the 37 37 CHAPTER ✦ ✦ ✦ ✦ In This Chapter Validating data as it is being entered Validating data immediately prior ... application-specific variation (extracted from the bonus application in Chapter 48 on the CD-ROM) is shown in Listing 37- 5. Listing 37- 5: A Custom Validation Function // function to deter...

Ngày tải lên: 17/01/2014, 08:20

... scripts, the JavaScript object world begins to wrap around itself in a way. Despite all the attributes that define a link, JavaScript regards a link as the same as a location object (Chapter 15). ... 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 javascript:...

Ngày tải lên: 10/12/2013, 15:15

... 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 ... see Chapter 37 — before trying any math on a user-entered value). Converting numbers to strings If you attempt to pass a numeric data type value to many of the string methods disc...

Ngày tải lên: 21/12/2013, 05:17

... covered later in this chapter. 658 Part III ✦ JavaScript Object and Language Reference The object parameter is not the string name of an object, but the object itself. JavaScript delivers an ... 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...

Ngày tải lên: 21/12/2013, 05:17

... operands 32 32 CHAPTER ✦ ✦ ✦ ✦ In This Chapter Understanding operator categories Role of operators in script statements ✦ ✦ ✦ ✦ 683 Chapter 32 ✦ JavaScript Operators Table 32-10 JavaScript Operator ... debugging tips in Chapter 45. ✦ ✦ ✦ Note 679 Chapter 32 ✦ JavaScript Operators The void Operator Nav2 Nav3 Nav4 IE3/J1 IE3/J2 IE4/J3 Compatibility ✔ ✔ ✔ In all scriptable browse...

Ngày tải lên: 21/12/2013, 05:17

... 0 t in Eq. (37. 6), so ,s33.8γ 0  tt as in part (a). c) 9 1000.2)800.0()s33.8( c m, which is the distance x found in part (a). 37. 17: Eq. (37. 18): 22 1 cu utx x     Eq. (37. 19): 22 1 ...  . )()( 1 1 )( 222 2 t c x ctxcutcux cc u x cuxtcutx            37. 62: a) From Eq. (37. 37), J.304 )sm1000.3( )sm10(3.00 kg)0.90( 8 3 8 3 2 1 28 44 2 4 2   ...

Ngày tải lên: 17/01/2014, 04:20

... doing something) via three routes: JavaScript object event handlers; javaScript statements; and HREF= attributes pointing to a javascript: URL. 722 Part III ✦ JavaScript Object and Language Reference You ... 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 pro...

Ngày tải lên: 17/01/2014, 08:20

... another type. 35 35 CHAPTER ✦ ✦ ✦ ✦ In This Chapter Converting strings into object references Converting strings to numbers for math Adding comments to scripts ✦ ✦ ✦ ✦ 732 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...

Ngày tải lên: 17/01/2014, 08:20

... 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 “clothing.” JavaScript ... of the way LiveConnect adapts data types to JavaScript. Any Java object that contains numeric data is converted to a JavaScript number value. Since JavaScript numbers are IEEE d...

Ngày tải lên: 17/01/2014, 08:20

... is implemented earlier in this book in a cross-platform version (Chapter 41) and Navigator-only version (Chapter 42). In this chapter s version, the implementation uses Internet Explorer 4’s Cascading ... width:1;} </STYLE> <SCRIPT LANGUAGE=" ;JavaScript& quot;> //var engaged = false var offsetX = 0 var offsetY = 0 (continued) 898 Part IV ✦ Putting JavaScript to Work Tabl...

Ngày tải lên: 17/01/2014, 08:20