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HTML事件屬性onblur

HTML事件屬性onblur


觸發onblur屬性當元素失去焦點。

HTML5中的新功能

沒有。

句法

<element onblur="script">

支持的標簽

所有HTML元素，EXCEPT：

<base>, 
<bdo>, 
<br>, 
<head>, 
<html>, 
<iframe>, 
<meta>, 
<param>, 
<script>, 
<style>, 
<title>


瀏覽器兼容性

HTML事件屬性onblurHTML事件屬性onblurHTML事件屬性onblurHTML事件屬性onblurHTML事件屬性onblur
onblurYesYesYesYesYes

例子

<!DOCTYPE html>
<html>
<body>

Enter your first name: <input type="text" name="fname" id="fname" onblur="myFunction()">
Enter your last name: <input type="text" name="lname" id="lname" onblur="myFunction()">

<script>
function myFunction() {
    console.log("lost focus");
}
</script>

</body>
</html>

Click to view the demo



實施例2

下面的代碼顯示了如何聽輸入密碼的Focus Lost事件。

<html>
<head>
<script type="text/javascript">
  function checkRequired() {
    document.write("value is required in field");
  }
</script>
</head>
<body>
  <form name="someForm">
    <input type="text" name="text1" /><br /> 
    <input type="password" name="text2" onblur="checkRequired();"/><br /> 
    <input type="hidden" name="text3" value="hidden value" />
    <textarea name="text4" cols=50 rows=10>The text area</textarea>
    <input type="submit" value="Submit" />
  </form>
</body>
</html>

Click to view the demo