Tài liệu Javascript bible Chapter 31 pptx

... value — after the 655 Chapter 31 ✦ Control Structures for loop broke out of the loop— to alert the user. Listing 31- 2 (not on the CD- ROM ) shows the relevant function. Listing 31- 2: Breaking Out ... while loops. In fact, Listing 31- 3 (not on the CD-ROM ) shows a while loop version of the for loop from Listing 31- 2. Listing 31- 3: A while Loop Version of Listing 31- 2 functio...

Ngày tải lên: 21/12/2013, 05:17

... 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

... 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...

Ngày tải lên: 21/12/2013, 05:17

... 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...

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 ✦ ✦ ✦ ✦ 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...

Ngày tải lên: 17/01/2014, 08:20

... 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...

Ngày tải lên: 17/01/2014, 08:20

... 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 ....

Ngày tải lên: 24/01/2014, 09:20

... site while surfing the Web. You 52 52 CHAPTER ✦ ✦ ✦ ✦ In This Chapter Temporary and persistent cookies World time calculations CGI-like intelligence ✦ ✦ ✦ ✦ 64 JavaScript Applications cannot use ... increments other than whole hours. In the case of working with time in JavaScript, you’re at the mercy of how the browser and JavaScript interpreter deal with times as reflected by often im...

Ngày tải lên: 24/01/2014, 10:20

... contents 16 16 CHAPTER ✦ ✦ ✦ ✦ In This Chapter Accessing arrays of objects contained by the document object Changing content colors Writing new document content to a window or frame ✦ ✦ ✦ ✦ 318 Part III ✦ JavaScript ... take JavaScript. Review the document object’s place within the JavaScript object hierarchy. Figure 16-1 clearly shows that the document object is a pivotal point f...

Ngày tải lên: 10/12/2013, 15:15

... onLoad= hspace lowsrc name src vspace width x y 18 18 CHAPTER ✦ ✦ ✦ ✦ In This Chapter How to precache images Swapping images after a document has loaded Creating interactive client-side image maps ✦ ✦ ✦ ✦ 362 Part III ✦ JavaScript Object ... onMouseOut="return clearIt()"> <AREA HREF=" ;javascript: go('the Nile River')" COORDS="1,155,6,162,0,175,3...

Ngày tải lên: 10/12/2013, 15:15