01:198:170 Chapter Notes - Chapter 18, 19: Radio Button, Text Box, Global Variable
65 views3 pages
16 May 2018
School
Department
Course
Professor
Event-Driven Programming
●Creating Graphical User Interfaces using forms
○Input facilities like buttons and checkboxes are known as elements of forms
○<form name ="unique_name">
○Event handler
is the program that performs the operation that responds to an
event
●Event-Based Programming: button, text box, radio button; events associated with them
and how to use event handlers
○3 Input Elements:
■Text box
<input type= "text" id= "" onchange= "">
●Radio button
<input type= "radio" name="" id="" onclick="">
●Button
<input type= "button" value="" onclick= "">
●How to refer to forms within a page
●Go over the Bean Counter program
JavaScript Functions
●JavaScript rules for: functions, declarations, return values, function calls, scope of
reference, and local/ global variable reference, forms and functions
○Functions are packages for algorithms, they have 3 parts
■Name
■Identifier for the function
■Parameters
■The values that the function will computer on, the input to the
function
■The list of names for all the function's inputs separated by
commas
■When writing the function's statements, the parameters are like
normal variables. The only difference are that they:
■Begin with a defined value, the function's input
■Don’t have to be declared; no var is needed
Unlock document
This preview shows page 1 of the document.
Unlock all 3 pages and 3 million more documents.
Already have an account? Log in
taupebee294 and 9 others unlocked
9
01:198:170 Full Course Notes
Verified Note
9 documents
Get access
Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers