- Tags: Form, HTML Form Event
- Categories: HTML Events, HTML Reference, Reference
Quick Reference
The onchange event fires when the value of the element is changed by the user and the element loses focus.
Supported HTML tags (most input types, including the following):
selecttextareainput type="text"input type="password"input type="checkbox"input type="radio"input type="file"input type="range"input type="search"
<!-- HTML -->
<select id="my_select" onchange="my_function()">
// JavaScript
function my_function() {
alert('You have made a choice.');
}
JavaScript
Any of the following are valid.
onchange
document.getElementById('my_select').onchange = function() {my_function()};
function my_function() {
alert('You have made a choice.');
}
change
// method 1
document.getElementById('my_select').addEventListener('change', function() {
alert('You have made a choice.');
});
// method 2
document.getElementById('my_select').addEventListener('change', my_function);
function my_function() {
alert('You have made a choice.');
}
Event
| Bubbles | yes |
| Can be canceled | no |
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.
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HTML NOTES:
- In our HTML section the term “tag” and “element” are often used interchangeably to refer to both the tag used to create a page element and the element created by the tag (
ptag =pelement = paragraph on the page) - HTML5 is not case sensitive; so
Pis the same asp,ÂH1is the same ash1 - Global attributes can be used with all HTML tags and are therefore not mentioned on every tag page
- To write clean, readable HTML code, it is best to use indentation whereas elements within elements are indented (tabbed or spaces) to create something that looks like a project outline
- The browser will automatically remove any extra spaces and lines in your HTML code when the page is displayed
- Double quotes or single quotes can be used around HTML attribute values, but when the attribute value itself contains one form of quote, it will be necessary to use the other around the attribute
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