document (JavaScript 1.0)

JavaScript is a client side scripting language that can make your webpage intaractive and JavaScript can be embbeded into your static HTML webpage directly.

The HTML5 Geolocation API is used to get the geographical position of a user. NOTE: Since this can compromise user privacy, the position is not available unless the user approves it.

With jQuery, you can hide and show HTML elements with the hide and show methods

jQuery ajaxStart and ajaxComplete are two functions are very useful to show the graphics while the data is loading from server. The ajaxStart method works while the server fullfilling the service asked to it. The ajaxComplete method is called when the server fulfilled the request.

JavaScript if…else is a conditional statement that is used to check wether a condition is true or false to take a decision.

jQuery is a cross-browser JavaScript library designed to simplify the client-side scripting of HTML. jQuery is an open source JavaScript library that simplifies the interactions between an HTML document, or more precisely the Document Object Model (DOM), and JavaScript.

Some of the most basic components we can manipulate when it comes to DOM elements are the properties and attributes assigned to those elements

jQuery is a very powerful tool which provides a variety of traversal methods to help us select elements in a document randomly as well as in sequential method. In other words, we can say that most of the traversing methods are used to find elements from the documents.

jQuery provides methods to manipulate documents in efficient way. You do not need to write big code to modify the value of any element's attribute or to extract HTML code from a paragraph or division.

Prompt box used for taking input from user. If you click on ok button then it return input value else it return null

screen object gives your browser screen information like width,height,color depth.

Using the css property we can get the simple CSS property value of an attribute.

The jQuery slideUp and slideDown methods gradually change the height of the selected elements.

jQuery animate method is very powerful API to manipulate html elements and add animation functionality. The use of animate function is very simple.

The <script> tag is used to define a client-side script, such as a JavaScript. The script element either contains scripting statements or it points to an external script file through the src attribute.

The <canvas> tag is used to draw graphics, on the fly, via scripting (usually JavaScript). The <canvas> tag is only a container for graphics, you must use a script to actually draw the graphics.

Now HTML 5 came up with a Drag and Drop (DnD) API that brings native DnD support to the browser making it much easier to code up. HTML 5 DnD is supported by all the major browsers like Chrome, Firefox 3.5 and Safari.

HTML5 canvas populated with one filled rectangle and one painted stroke.

JavaScript can be written at any place in the page or can be in external file. JavaScript is written in the head section in <script> tag.

JavaScript statement is a command that tells a browser to tell what to do. JavaScript statements is a instruction to browser and the statements are executed sequentially.

Arithmatic operators are used to perform operations on the numbers.

An object is an entity which can have properties, events and methods. This example creates a simple string holding the text 'hello world'. Some Standard Objects that are part of the JavaScript are 'String','Date','Array','Boolean','Array','Math' and 'RegExp'.

JavaScript "==" is equal to operator.

Javascripts loops are similar to other programming languages. Loops allows us to execute a block of statements to the specified number of times.

JavaScript event that triggers when object gets focus.

Javascript Try…catch statement to check if there is errors in a block of code.

Cookies are stored by the web browser. They allow you to store particular information about a user and retrieve it every time they visit your pages. Each user has their own unique set of cookies

JavaScript validation are client side scrips that is used to reduce the server load because all validation are check on client browser. This example validates the input matches a valid e-mail address with a regular expression.

jQuery contains powerful methods (functions) for changing and manipulating HTML elements and attributes. Click on the button to see jQuery hiding the paragraphs.

jQuery selectors allows us to select HTML elements and manipute them as a group or as a single object. In jQuery it's common that selectors start with dollar sign and parentheses. Syntax:- $.(selector).methodName();

jQuery selectors allow you to select and manipulate HTML elements as a group or as a single element.

The jQuery nth-child is used to select all elements that are ntg-child of of their parent. The nth-child(n) is “1-indexed”, meaning the “n” is counting starts at 1. Because jQuery's implementation of :nth-child(n) is strictly derived from the CSS specification, the value of n is "1-indexed", meaning that the counting starts at 1. For all other selector expressions, however, jQuery follows JavaScript's "0-indexed" counting.

Using jQuery manipulation methods, we can remove elements.

Introduction to jQuery and how to attach a handler to one or more events for all elements that match the selector.

jQuery events can be used to register behaviors to take effect when the user interacts with the browser, and to further manipulate those registered behaviors.

The jQuery load method is a simple to use AJAX (Asynchronous JavaScript and XML.) function. That enables you to load ajax content with one line of code. AJAX is a technique for creating better and more interactive web applications and we at webgrid.com are using ajax with jQuery alot to make this web page better!

jQuery AJAX life cycle demonstration. This is a demonstration of the methods ajaxStart, ajaxSend, ajaxComplete, ajaxStop, and ajaxSuccess that are triggered when load method is called.

jQuery Animate can function supports animation in different directions

By extending jQuery, you create reusable components that can be used on any web page. Your code is encapsulated and there is less risk that you will use the same function names elsewhere.

jQuery.browser contains flags for the useragent, read from navigator.userAgent. We recommend against using this property; please try to use feature detection instead (see jQuery.support). jQuery.browser may be moved to a plugin in a future release of jQuery.

The drawImage method allows you to insert other images (img and canvas elements) into your canvas context. To draw an image using HTML5 Canvas, we can use the drawImage() method which requires an image object and a destination point. The destination point is relative to the top left corner of the image.

make your HTML pages become more dynamic and interactive by using JavaScript

The HTML paragraph element is written on the web page before the dynamic content from the script. That is because the script tag is after the paragraph tag. If you move the HTML script element to the "head" tag you will see the dynamic text is written first!

he <noscript> tag is used to provide an alternate content for users that have disabled scripts in their browser or have a browser that doesn’t support client-side scripting. The noscript element can contain all the elements that you can find inside the body element of a normal HTML page. The content inside the noscript element will only be displayed if scripts are not supported, or are disabled in the user’s browser:

JavaScript code are the sequence of statements.These statements can be grouped. These grouped are called blocks and the blocks are created using {} brackets.

Javascript variables is a key to an object of data. Variable is defined using 'var' keyword and JavaScript variables are case sensetive, so 'key' and 'Key' are two different variables.

If a variable is defined in a function then it will be local for this function, it can not be used outside of that function. A variable which is defined outside of the fuction becomes Global and this variable can be used in whole webpage document.

Javascript assignment operators are used to assign values.There 6 assignment operators that can be used.

Comparision Operators are used to compare the values of the variables, and the result is used to make the decision.

JavaScript logical operators are used to determine the logic between variables and values.

The Date object is used to work with dates and times.

Javascript array is used to store multiple values in a variable.

A javascript Math object allows us to perform the mathematical tasks.

There are some guidelines which must be remembered while coding in javascript. 1) Javascript is case-sensitive language. 2) JavaScript ignores extra white spaces. 3) You can break the line of code.

JavaScript "===" is exactly equal to (value and type) operator.

This statement allows us to select one statement among many statements.It is also called nested if….else.

The switch statement is used to select one statement from the many blocks. This is used on place of nested if…else. If there are number of if..else statements then we should use switch.

The switch statement is used to select one statement from the many blocks. This is used on place of nested if…else. If there are number of if..else statements then we should use switch.

As 'for loop' executes the specified number of times, the while loop executes while a condition is true.

Do…While loop is the varient of the while loop. The difference between while and do…while is that while loop only executes if the condition is true while do….while loop executes atleast once even the codition is false.

Javascript provides us the facility to break a loop in middle and also to continue the loop without executing the whole body of the loop.There are two keywords that provides these facilities: 1) break 2) continue

Javascript Events are the actions which are detected by the javascript when they are fired.

This event is fired when the form is submitted. This is only works with the form element of the HTML.

Here in a text box the timer is display on "start count" button click and stop on "start count " click

The Navigator object contains information about the visitor's browser.

Count number of attributes that exists for the button.

We are here using Core DOM setAttribute method we set the value of input type text to button.

The Frame and Iframe represents html frame and iframe respectively.This DOM object has all the properties that a HTML element has. We can change these properties using javascript.

The link object is used to include the external file in the web page. This tag must be inside the head tag of the page. Here is the example of the link that give the type of the external sheet.

JavaScript "==" is not equal to operator.

JavaScript > is greater then operator.

JavaScript < is less then operator.

JavaScript > is greater or equal to operator.

JavaScript > is less or equal to operator.

The && (and operator) logical operator are used to determine the logic between variables or values.

The || (or operator) logical operator are used to determine the logic between variables or values.

The ! (not operator) logical operator are used to determine the logic between variables or values.

A small example displaying the usage of two JavaScript keywords in a code block.

The flexible nature of JavaScript variable types can lead to confusion as to the particular type of a variable at any given time in a script. To address this concern JavaScript provides the typeof operator. The typeof operator returns the current variable type of the specified variable.

If you provide a return statement inside a function you may specify the value that you would like to return from the function. So, functions that are going to return a value must use the return statement.

The String object is used to manipulate texts.

The Boolean object is used to convert a non-Boolean value to a Boolean value (true or false).

JavaScript regular expression can be used to maniplate strings and perform text searches. In this example we do a case-insensitive search for "www.webgrid.com" in a string.

While most current browsers understand Javascript a lot of the early browsers did not. The current browsers also allow Javascript to be turned off and some people do this. What this means is that not all of the visitors to your page will see the effects of the JavaScript on your page. We need to make sure that these visitors can use our site even without JavaScript.

Enables you to remove a client cookie with JavaScript. We remove the cookie by setting the expiration date for the cookie back in time.

JavaScript clearTimeout function enables you to stop the timer event started by the JavaScript setTimeout function. When you apply the setTimeout function using a recursive loop over the JavaScript function by specifying the time delay then it calls the function continuously after equal intervals of time.

Example how to call anonymous function on setTimeout function.

JavaScript setInterval function provides the functionality to execute the specified function after the sepcified time interval in milliseconds. Using the JavaScript setInterval function you can set the time interval to call a function again and again.

JavaScript clearInterval function enables you to stop the timer event started by the JavaScript setIntterval function. When you apply the setInterval function a JavaScript function by specifying the time interval then it calls the function continuously after equal intervals of time.

With jQuery you select (query) HTML elements and perform "actions" on them. The jQuery syntax is tailor made for selecting HTML elements and perform some action on the element(s) or attributes to element(s)

Most of the JQuery Traversal Methods do not modify the jQuery object and they are used to filter out elements from a document based on given conditions. The filter( selector ) method can be used to filter out all elements from the set of matched elements that do not match the specified selector(s).

Jquery traversing methods can be used to locate all the descendent elements of a particular type of elements.

jQuery provides methods to manipulate documents in efficient way. Using jquery manipulation methods, we can insert element in given document. Like here we add a new element before the blue square.

Using jquery manipulation methods, we can replace elements with another elements.

jQuery mouse events are events that have to do with actions of the mouse. These can be a click, double-click, mouse down and more. Mouse events can be used in two different ways.

jQuery also allows us the set the property value of the CSS.

jQuery allows to change the multiple CSS properties value at once.

The jQuery toggle method toggles the visibility of HTML elements using the show or hide methods. Shown elements are hidden and hidden elements are shown. The speed parameter can take the following values: "slow", "fast", "normal", or milliseconds.

The jQuery fade methods gradually change the opacity for selected elements.

Register a handler with jQuery to be called when Ajax requests complete with an error. Whenever an Ajax request completes with an error, jQuery triggers the ajaxError event. Any and all handlers that have been registered with the .ajaxError() method are executed at this time.

The jQuery animate method has a complete method we can supply with callback function that is fired once the animation is complete. This can be useful for stringing different animations together in sequence like this example.

jQuery.support is a collection of properties that represent the presence of different browser features or bugs. Primarily intended for jQuery's internal use; specific properties may be removed when they are no longer needed internally to improve page startup performance.

Drag and Drop magic with HTML5 using an image to drag back and forth between four <div> elements.

JavaScript random method returns a random number between 0 and 1.

To align HTML5 Canvas text, we can use the textAlign property of the canvas context, which can be set to start, end, left, center, or right. Unless otherwise specified, the textAlign property is defaulted to left.