- Getting Started With JavaScript
Содержание
- 2. What Is JavaScript? JavaScript is a high level programming language used to create interactive effects within
- 3. The JavaScript Language Scripting Language Interpreted Untyped Multi-Paradigm – Object-Oriented, Imperative, Functional
- 4. What is ECMAScript? ECMAScript is a trademarked scripting-language specification and standard Standardized by Ecma International Implementations
- 5. Versions ES5 - Standardized in 2009 implemented fairly completely in all browsers ES6 / ES2015 –
- 6. JavaScript Syntax Set of rules for how JavaScript programs are built JavaScript uses most of the
- 7. JavaScript Output console.log(‘some value’) – Prints to console in browser or terminal window.alert() – Displays in
- 8. Variables Variables are used to store values JavaScript uses the “var” keyword to declare variables and
- 9. Expressions An expression is a combination of values, variables and operators which computes a value 2
- 10. Comments Single Line Comment var x = 5; // This is a single line comment Multi
- 11. Arrays JavaScript arrays allow us to store multiple values in a single variable var names =
- 12. Loops Execute a block of code as long as a condition is true and repeat For
- 13. Objects Almost everything in JS can be considered an “object”. Objects have properties and methods (functions)
- 14. Conditionals / If Statements Runs a block of code if something is true var x =
- 15. Switch Selects one of many blocks of code to execute. Often used as an alternative for
- 16. Function Block of code designed to run a task. Can be created and then invoked later
- 18. Скачать презентацию
What Is JavaScript?
JavaScript is a high level programming language used to
What Is JavaScript?
JavaScript is a high level programming language used to
The JavaScript Language
Scripting Language
Interpreted
Untyped
Multi-Paradigm – Object-Oriented, Imperative, Functional
The JavaScript Language
Scripting Language
Interpreted
Untyped
Multi-Paradigm – Object-Oriented, Imperative, Functional
What is ECMAScript?
ECMAScript is a trademarked scripting-language specification and standard
Standardized by
What is ECMAScript?
ECMAScript is a trademarked scripting-language specification and standard
Standardized by
Versions
ES5 - Standardized in 2009 implemented fairly completely in all browsers
ES6
Versions
ES5 - Standardized in 2009 implemented fairly completely in all browsers
ES6
JavaScript Syntax
Set of rules for how JavaScript programs are built
JavaScript uses
JavaScript Syntax
Set of rules for how JavaScript programs are built
JavaScript uses
JavaScript Output
console.log(‘some value’) – Prints to console in browser or terminal
window.alert()
JavaScript Output
console.log(‘some value’) – Prints to console in browser or terminal
window.alert()