The HTML Attribute reference

"onchange" - html Event

  • The onchange event occurs when a control loses the input focus and its value has been modified since gaining focus.

Value(s): One or more script statements each ended with a semicolon.

Event "onchange" example:
<html>
 <body>
  <form name="myform" action="http://www.google.com/search">
   <input type="text" name="q" value="w3c"
    onfocus="this.value='w3c';"
    onchange="alert(this.type+' lost focus and have been changed')"/>
    Focus test:
   <input type="checkbox"
    onfocus="document.myform.q.value=this.type+' in focus';"
    onblur="alert(this.type+' lost focus')"/>
   <button id="mybutton" title="Show on goggle"
        type="submit" value="Search">
        Search google</button>
  </form>
 </body>
</html>
Used in the element(s):
Elements Description
input This element defines a form control for the user to enter input.
select This element defines a form control for the selection of options. It is is most useful within a FORM.
textarea This element is used in forms to get multiple lines of text from the user.

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