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The onblur property returns the onBlur event handler code, if any, that exists on the current element.
Syntax
element.onblur = function;
functionis the name of a user-defined function, without the () suffix or any parameters, or an anonymous function declaration, such as
element.onblur = function() { console.log("onblur event detected!"); };
Example
<html>
<head>
<title>onblur event example</title>
<script type="text/javascript">
var elem = null;
function initElement()
{
elem = document.getElementById("foo");
// NOTE: doEvent(); or doEvent(param); will NOT work here.
// Must be a reference to a function name, not a function call.
elem.onblur = doEvent;
};
function doEvent()
{
elem.value = 'Bye-Bye';
console.log("onblur Event detected!")
}
</script>
<style type="text/css">
<!--
#foo {
border: solid blue 2px;
}
-->
</style>
</head>
<body onload="initElement();">
<form>
<input type="text" id="foo" value="Hello!" />
</form>
<p>Click on the above element to give it focus, then click outside the
element.<br /> Reload the page from the NavBar.</p>
</body>
</html>
Notes
The blur event is raised when an element loses focus.
In contrast to MSIE--in which almost all kinds of elements receive the blur event--almost all kinds of elements on Gecko browsers do NOT work with this event.
Specifications
| Specification | Status | Comment |
|---|---|---|
| WHATWG HTML Living Standard The definition of 'onblur' in that specification. |
Living Standard |