Học JavaScript qua ví dụ part 57 ppt
Học JavaScript qua ví dụ part 57 ppt
... changes a value, JavaScript can react and do something based on those actions. The simplest way to use the handlers is as attributes of HTML tags, but in doing so, JavaScript is made part of the ... Handling Events The onunload event handler will also be made part of the JavaScript code. After you have tested your program, put the JavaScript program in an external .js file. In...
Ngày tải lên: 04/07/2014, 02:20
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...
Ngày tải lên: 04/07/2014, 02:20
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...
Ngày tải lên: 04/07/2014, 02:20
Học JavaScript qua ví dụ part 7 ppt
... get an error.) The word undefined is not a keyword in JavaScript. If compared with the == equality opera- tors, null and undefined are equal, but if compared with the identity operator, they ... change throughout the run of a program whereas constants, also called literals, remain fixed. JavaScript variables can be assigned three types of data: • numeric • string • Boolean Computer ......
Ngày tải lên: 04/07/2014, 02:20
Học JavaScript qua ví dụ part 9 pptx
... programming languages use a special syntax to define a constant to distinguish it from a variable. JavaScript declares constants with the const type (which replaces var) and the name of the constant ... + 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 num...
Ngày tải lên: 04/07/2014, 02:20
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,...
Ngày tải lên: 04/07/2014, 02:20
Học JavaScript qua ví dụ part 18 pptx
... 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 there’s another ... "center"> <table border="1"> <tr> <script type = "text /javascript& quot;> 7 for( n=0; n < 20; n++){ 8 value = fib(n); document.write(&...
Ngày tải lên: 04/07/2014, 02:20
Học JavaScript qua ví dụ part 29 ppt
... JavaScript Core Objects Search and Replace Methods. In word processing software you’ll always find some mechanism to search for patterns in strings and to replace one string with another. JavaScript ... substring of JavaScript. When a user enters information, you want to see if a certain pattern of characters exist, such as the @ in an e-mail address or a zip code in an address. Java...
Ngày tải lên: 04/07/2014, 02:20
Học JavaScript qua ví dụ part 31 ppt
... WoweBook.Com ptg 10.1 JavaScript and the Browser Object Model 277 complete JavaScript program ready to copy and paste into your editor. Save it as a .js file and then include it in your JavaScript code ... type supports, such as .rpm, .wav, .pdf, and so on. Partial output is shown in Figure 10.15. Figure 10.15 MIME types: Output from Example 10.6 (partial list). From the Library of W...
Ngày tải lên: 04/07/2014, 02:20
Học JavaScript qua ví dụ part 34 ppt
... 310.) FORMAT JavaScript: window.location.href = "URL"; JavaScript: window.location.replace("URL"); EXAMPLE JavaScript: window.location.href = "http://www.legos.com/"; JavaScript: ... href=" ;JavaScript: setBgColor('yellow')">yellow</a> <br /> <a href=" ;JavaScript: setBgColor('green')">green</a>...
Ngày tải lên: 04/07/2014, 02:20