click the button to show the text
click the button to change the text
output
click the button to show the date
output
click the button to on/off the light
click the button to change the style
Lorem ipsum dolor sit amet.
click the button to show/hide the content
Lorem ipsum dolor sit, amet.
click the button to show the result
result
click the button to show the result
show result
what can javascript do?
JavaScript can change the style of an HTML element.
A Paragraph.
click the button to show the result
result
click the button to show the result
result
click the button to show the result
result
click the button to show the result
result
answer the question
answer the question
answer the question
answer the question
answer the question
answer the question
click the button to show the result
result
click the button to show the result
result
click the button to show the result is not operator
result
click the button show the result variable value and datatype check
result
the result is not same variable value and datatype check
result
the result is not same variable value and datatype check
result
the result is not same variable datatype and datatype check
result
the result is not same variable value and datatype check
result
the result is not same variable value and datatype check
result
the result is not same variable value and datatype check
result
the result is not same variable value and datatype check
result
the result is not same variable value and datatype check
result
For loop button press
result
For loop button press
result
what can javascript do?
JavaScript can change the style of color
In HTML, JavaScript statements are executed by the browser.
A JavaScript program is a list of statements to be executed by a computer.
JavaScript Variables
Create a variable, assign a value to it, and display it:
JavaScript Variables
You can declare many variables in one statement.
JavaScript Variables
A variable without a value has the value of:
JavaScript Arithmetic
The += Operator
JavaScript operators
The -= Operator
JavaScript operators
The *= Operator
JavaScript operators
The /= Operator
JavaScript Operators
The typeof Operator
The typeof operator returns the type of a variable or an expression.
JavaScript Objects
Creating an Object
JavaScript Math.PI
Math.PI returns the ratio of a circle's circumference to its diameter:
JavaScript Math.pow()
Math.pow(x,y) returns the value of x to the power of y:
JavaScript Math.abs()
Math.abs(x) returns the absolute (positive) value of x:
JavaScript Math.min()
Math.min() returns the lowest value in a list of arguments: