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Definition and Usage
The onblur event occurs when an object loses focus.
Onblur is most often used with form validation code (e.g. when the user leaves a form field).
Tip: The onblur event is the opposite of the onfocus event.
The onblur event is supported in all major browsers.
onblur In HTML
The onblur attribute can be used within ALL HTML elements, EXCEPT: <base>, <bdo>, <br>,
<head>, <html>, <iframe>, <meta>, <param>, <script>, <style>,
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