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Introduction to JaVaScript презентация
Содержание
- 1. Introduction to JaVaScript
- 2. JAVASCRIPT JavaScript is a simplified programming language
- 3. JAVASCRIPT You can display a personalized message
- 4. JavaScript is one of the 3
- 5. SERVER-SIDE AND CLIENT-SIDE PROGRAMMING Server-side applications rule
- 6. CLIENT-SIDE Client-side applications, on the other hand,
- 7. THE SCRIPT ELEMENT The section. Put script
- 8. EXAMPLE
- 9. VARIABLES Temporary containers that store important information.
- 10. DECLARING VARIABLES var , followed by the
- 11. EXAMPLE 1. Creates a new variable named
- 12. JAVASCRIPT DISPLAY POSSIBILITIES JavaScript can "display" data
- 13. USING DOCUMENT.WRITE()
- 14. USING INNERHTLM The id attribute defines the
- 15. USING CONSOLE.LOG() In your browser, you can
- 16. JAVASCRIPT PROGRAMS The program instructions are called
- 17. JAVASCRIPT STATEMENTS javaScript statements are composed of:
- 18. JAVASCRIPT LITERALS Numbers are written with or
- 19. JAVASCRIPT VARIABLES Variables are used to store
- 20. OPERATORS Assignment operator (=) to assign values
- 21. ASSIGNMENT OPERATORS
- 22. COMPARISON AND LOGICAL OPERATORS
- 23. JOINING MULTIPLE WORDS Historically, programmers have used
- 24. DATA TYPES In programming, text values are
- 25. JAVASCRIPT COMMENTS Comments are ignored, and will
- 26. FUNCTION function is a series of
- 27. FUNCTION A function is a programming routine
- 28. DECLARING A FUNCTION Start by deciding what
- 29. CALLING A FUNCTION To call the function,
- 30. EXAMPLE
- 31. FUNCTIONS WITH PARAMETERS The code to be
- 32. THANK YOU!
JAVASCRIPT JavaScript is a simplified programming language designed to beef up web pages with interactive features. JavaScript is perfect for creating pop-up windows, embedding animated effects, or modifying the content that
Слайд 2JAVASCRIPT
JavaScript is a simplified programming language designed to beef up web
pages with interactive features.
JavaScript is perfect for creating pop-up windows, embedding animated effects, or modifying the content that appears on your web page.
JavaScript is perfect for creating pop-up windows, embedding animated effects, or modifying the content that appears on your web page.
Слайд 3JAVASCRIPT
You can display a personalized message to your visitors(“Hello, Joe!”) or
make title grow and shrink perpetually
Gather information about date, your visitors browser, or the content your visitor types into a form.
React to events that take place in a browser. For example, you can add JavaScript code that runs when a page finishes loading or when a visitor clicks a picture.
Gather information about date, your visitors browser, or the content your visitor types into a form.
React to events that take place in a browser. For example, you can add JavaScript code that runs when a page finishes loading or when a visitor clicks a picture.
Слайд 4
JavaScript is one of the 3 language all web developers must
learn:
HTML to define the content of web pages
CSS to specify the layout of web pages.
HTML to define the content of web pages
CSS to specify the layout of web pages.
Слайд 5SERVER-SIDE AND CLIENT-SIDE PROGRAMMING
Server-side applications rule the web world. However, they’re
difficult to program. Not only do developers need to worry about getting the program to generate HTML for a browser, they also need to make sure the program can run all kinds of complex code and tap giant databases—and they need to do it so that the site performs just as well when millions of people view it as it does when only one person visits it.
Слайд 6CLIENT-SIDE
Client-side applications, on the other hand, use a completely different model.
They embed small, lightweight programs inside an ordinary HTML page. When a browser downloads the page, the browser itself runs the program (assuming your security settings or compatibility issues haven’t disabled the program). Client-side programs are much less powerful than those on the server side—they can’t reliably poll the huge databases stored on web servers, for example, and for security reasons they can’t directly change most things on your computer. However, they’re much simpler to create.
Слайд 7THE SCRIPT ELEMENT
The section. Put script you want your browser
to run right away in the section of your HTML. The browser runs your script as soon as it reaches the
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