Check box- an HTML forms component that is either checked or unchecked
Controls/components – a clickable object on the screen that allows the user to enter input
Data validation- to use JavaScript to make sure the user has filled out a form properly
Radio button- used with two or more buttons, only one item is selectable
Text field- a control that allows the user to type input

1) TRUE
2) TRUE
3) FALSE
4) TRUE
5) FALSE

1) The text field is an input control that allows the user to key a string value into a specific location on a Web page.

2) The radio button is an input control that allows the user to select just one option from a set of options. 

3) A check box is an input control that allows the user to select any number of options from a set of options. 

4) JavaScript statements use a single equal sign (=) for the assignment operation. 

5) JavaScript statements use a double equal sign (= =) for the equality operation. 


1) What is an input control or component? 

An input control or component is an object displayed on a web page that allows user input.

2) How are text fields, radio buttons, check boxes, and buttons defined in HTML?
They are defined using the <INPUT> tag with the TYPE attribute set to either radio, checkbox, or button. 

3) What is data validation? Why is it important?

Data validations makes sure the user’s input is complete and properly filled, and it is important because a user can make a mistake or fill out the form wrong. 

4) How do you validate the contents of a text field?

You make a JavaScript function that is called in the onClick event of a button, and this function checks to see if the textbox’s value is “”, or nothing. 

5) How do you validate a set of radio buttons?

You check if the checked property of the radio button is true.