Display alert messages to the user
Gather information through prompts
Manipulate variables
Build statements
Do math
Use operators
Concatenate text
Run routines based on conditions
Compare values
Work with arrays
Run automated routines
Display custom elements on the webpage
Generate random numbers
Manipulate decimals
Round numbers
Create loops
Use functions
Find the current date and time
Measure time intervals
Create a timer
Respond to the user's actions
Swap images
Control colors on the webpage
Change any element on the webpage
Improvise new HTML markup on the fly
Use the webpage DOM structure
Insert comments
Situate scripts effectively
Create and change objects
Automate object creation
Control the browser's actions