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Java Script Easy [ Share ,Read] |
- JavaScript was designed to add interactivity to HTML pages
- JavaScript is a scripting language
- A scripting language is a lightweight programming language
- JavaScript is usually embedded directly into HTML pages
- JavaScript is an interpreted language (means that scripts execute without preliminary compilation)
- Everyone can use JavaScript without purchasing a license
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Javascript [ Share ,Read] |
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JavaScript is used in billions of Web pages to add functionality, validate forms, communicate with the server, and much more.It is the most popular scripting language on the internet, and works in all major browsers, such as Internet Explorer, Firefox, Chrome, Opera, and Safari. |
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Javascript - Level 4 [ Share ,Read] |
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Javascript Conditionals and Loops |
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Javascript - Level 3 [ Share ,Read] |
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Javascript Built-in and User defined Functions |
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Javascript- Level 2 [ Share ,Read] |
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Tutorial about Javascript arrays and operators |
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Javascript- Level1 [ Share ,Read] |
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Course about javascript basics,its methods , properties and event handling in javascript |
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Javascript Form Validation [ Share ,Read] |
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JavaScript can be used to validate data in HTML forms before sending off the content to a server.
The idea behind JavaScript form validation is to provide a method to check the user entered information before they can even submit it. JavaScript also lets you display helpful alerts to inform the user what information they have entered incorrectly and how they can fix it.
Form data that typically are checked by a JavaScript could be:
* If a text input is empty or not
* If a text input is all numbers
* If a text input is all letters
* If a text input is all alphanumeric characters (numbers & letters)
* If a text input has the correct number of characters in it (useful when restricting the length of a username and/or password)
* If a selection has been made from an HTML select input (the drop down selector)
* If an email address is valid
* How to check all above when the user has completed filling out the form
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Javascript Arrays [ Share ,Read] |
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An array is a special variable, which can hold more than one value, at a time.The following points should always be remembered when using arrays in JavaScript:
The array is a special type of variable.
Values are stored into an array by using the array name and by stating the location in the array you wish to store the value in brackets. Example: myArray[2] = "Hello World";
Values in an array are accessed by the array name and location of the value. Example: myArray[2];
JavaScript has built-in functions for arrays, so check out these built-in array functions before writing the code yourself!
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Javascript - Objects [ Share ,Read] |
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JavaScript is an Object Oriented Programming (OOP) language. An OOP language allows you to define your own objects and make your own variable types. An object is just a special kind of data. An object has properties and methods.
Objects work so well because they act just like real life objects- objects have properties and methods. So if we were talking about a lamp, a property of it may be its height or width, say 12cm. A method of it may be to shine (an action). And when it's shining, its brightness property would be of a greater value than when it wasn't.
JavaScript gives you the ability to make your own objects for your own applications. With your objects you can code in events that fire when you want them to, and the code is encapsulated. It can be initialized any amount of times. |
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Javascript - Functions [ Share ,Read] |
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To keep the browser from executing a script when the page loads, you can put your script into a function.A function contains code that will be executed by an event or by a call to the function.You may call a function from anywhere within a page (or even from other pages if the function is embedded in an external .js file).
Functions can be defined both in the and in the section of a document. However, to assure that a function is read/loaded by the browser before it is called, it could be wise to put functions in the section. |
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Javascript Basics - Variables [ Share ,Read] |
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Learn about Javascript |
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Javascript-Dynamic Controls [ Share ,Read] |
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Dynamically add textbox, input, radio elements in html form using JavaScript. |
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Javascript [ Share ,Read] |
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Javascript Basics |
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Jscript [ Share ,Read] |
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Javascript for Beginners |
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