HTML and CSS Reference
In-Depth Information
EXAMPLE
7.4 (
CONTINUED
)
3
<body>
<div align="center">
4
<form>
5
<input type="button"
6
value="Welcome button"
7
onClick="greetings('Dan');"
/>
</form>
</div>
</body>
</html>
EXPLANATION
1
The JavaScript program starts here. The function is defined in the head of the doc-
ument.
2
The function
greetings()
is defined here.
3
The body of the page starts here.
4
An HTML form starts here. It will be used to create a button input device.
5
The type of input device is a button.
6
The value that will be displayed in the button is
“Welcome button”
(see Figure 7.6).
7
When the user presses or clicks the button, the
onClick
event handler will be trig-
gered, causing the
greetings()
function to be called. The value assigned to the
on-
Click
event handler is a JavaScript function enclosed in quotation marks (see Fig-
ure 7.7).
Figure 7.6
When the button is clicked, the event is triggered.
