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content/notes/05-javascript.md
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@ -4,6 +4,9 @@ aliases:
tags:
- lecture
- cosc203
sr-due: 2022-07-29
sr-interval: 3
sr-ease: 250
---
# Javascript
@ -38,5 +41,21 @@ typing
- you dont need to specify the type of variable
events
- e.g., click, hover, etc
-
- e.g., click, hover, resize etc
- smoke alarm analogy
- fire is the event
- alarm is the listener
- sound of the alarm is the handler
cookies
- websites can use JS to store cookies on client machines.
- usually server 'serve' the file to the user and nothing else
- cookies allow to server to remember information about the client
- `document.cookie`
limitations
- cannot write to files (apart from cookies)
- cannot execute programs on client computer
- cannot establish a connection to any server except the one it came from (apart from re-directing to a new site)
- cannot read history of brower (but is can cause the brower to move around in the history list)
- not supposed to be able to open an invisible window