Handling event part 3

JavaScript Tutorial
DOM & Events
Handling Events
19
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Events



The onload and onunload events are triggered when the user enters or leaves the page. These can be useful when performing actions after the page is loaded.<body onload="doSomething()">
Similarly, the window.onload event can be used to run code after the whole page is loaded.window.onload = function() {
//some code
}
The onchange event is mostly used on textboxes. The event handler gets called when the text inside the textbox changes and focus is lost from the element.
For example:
<input type="text" id="name" onchange="change()">
<script>
function change() {
var x = document.getElementById("name");
x.value= x.value.toUpperCase();
}
</script>Try It Yourself

It’s important to understand events, because they are an essential part of dynamic web pages.

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