1. JavaScript
Tuesday, April 16, 13

2. The Script Tag
<script>
alert("My First JavaScript");
</script>
Tuesday, April 16, 13

3. JavaScript Language
Tuesday, April 16, 13

4. JavaScript Statements
JavaScript statements are "commands" to the browser. The purpose
of the statements is to tell the browser what to do.
<script>
document.getElementById("demo").innerHTML="Hello";
</script>
Tuesday, April 16, 13

5. Semicolon ;
Semicolon separates JavaScript statements.
You add a semicolon at the end of each executable statement.
<script>
document.getElementById("demo").innerHTML="Hello";
</script>
Tuesday, April 16, 13

6. JavaScript Code
JavaScript code (or just JavaScript) is a sequence of JavaScript
statements. Each statement is executed by the browser in the
sequence they are written.
<script>
document.getElementById("demo").innerHTML="Hello";
document.getElementById("myDIV").innerHTML="Hi";
</script>
Tuesday, April 16, 13

7. JavaScript Functions
The purpose of a function is to make the sequence of statements
execute together when called
<script>
function myFunction() {
document.getElementById("demo").innerHTML="Hello";
document.getElementById("myDIV").innerHTML="Hi";
}
</script>
Tuesday, April 16, 13

8. JavaScript is Case Sensitive
Watch your capitalization closely when you write JavaScript
statements:
A function getElementById is not the same as getElementbyID.
<script>
function myFunction() {
document.getElementById("demo").innerHTML="Hello";
document.getElementbyId("demo").innerHTML="Hello";
}
</script>
Tuesday, April 16, 13

9. JavaScript Comments
Comments will not be executed by JavaScript.
Comments can be added to explain the JavaScript, or to make the
code more readable.
Single line comments start with //.
<script>
function myFunction() {
// Write to a heading
document.getElementById("demo").innerHTML="Hello";
}
</script>
Tuesday, April 16, 13

10. JavaScript Comments
In the following example the comment is used to prevent the
execution of one of the codelines (can be suitable for debugging):
<script>
function myFunction() {
// document.getElementById("demo").innerHTML="Hello";
}
</script>
Tuesday, April 16, 13

11. JavaScript Functions w/Arguments
When you call a function, you can pass along some values to it, these values
are called arguments or parameters.
These arguments can be used inside the function.
You can send as many arguments as you like, separated by commas (,)
<script>
function myFunction(parameter1, parameter2) {
document.getElementById("demo").innerHTML= parameter1;
document.getElementById("myDIV").innerHTML= parameter2;
}
</script>
Tuesday, April 16, 13

12. jQuery
docs.jquery.com
Tuesday, April 16, 13

13. jQuery
jQuery commands with a call to the jQuery function. Here is how a jQuery
statement is constructed.
jQuery(‘p’).css(‘color’, ‘blue’);
selector action parameters
jQuery(‘p’) .css (‘color’, ‘blue’)
Tuesday, April 16, 13

14. jQuery selectors
Same as CSS. Tags, Classes and IDs
jQuery(‘p’).css(‘color’, ‘blue’);
jQuery(‘.classname’).css(‘color’, ‘blue’);
jQuery(‘#idname’).css(‘color’, ‘blue’);
Tuesday, April 16, 13