onchange Event
Example
Execute a JavaScript when a user changes the selected option of a <select> element:
<select onchange="myFunction()">
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More "Try it Yourself" examples below.
Definition and Usage
The onchange event occurs when the value of an element has been changed.
For radiobuttons and checkboxes, the onchange event occurs when the checked state has been changed.
Tip: This event is similar to the oninput event. The difference is that the oninput event occurs immediately after the value of an element has changed, while onchange occurs when the element loses focus, after the content has been changed. The other difference is that the onchange event also works on <keygen> and <select> elements.
Browser Support
| Event | |||||
|---|---|---|---|---|---|
| onchange | Yes | Yes | Yes | Yes | Yes |
Syntax
In JavaScript, using the addEventListener() method:
object.addEventListener("change", myScript);
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Note: The addEventListener() method is not supported in Internet Explorer 8 and earlier versions.
Technical Details
| Bubbles: | Yes |
|---|---|
| Cancelable: | No |
| Event type: | Event |
| Supported HTML tags: | <input type="checkbox">, <input type="color">, <input type="date">, <input type="datetime">, <input type="email">, <input type="file">, <input type="month">, <input type="number">, <input type="password">, <input type="radio">, <input type="range">, <input type="search">, <input type="tel">, <input type="text">, <input type="time">, <input type="url">, <input type="week">, <keygen>, <select> and <textarea> |
| DOM Version: | Level 2 Events |
More Examples
Example
Execute a JavaScript when a user changes the content of an input field:
<input type="text"
onchange="myFunction()">
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Event Object
