blur() 方法用于从 checkbox 上移开焦点。
checkboxObject.blur()
下面的例子可设置并移开 checkbox 上的焦点:
<html> <head> <script type="text/javascript"> function setFocus() {document.getElementById('check1').focus()
} function loseFocus() {document.getElementById('check1').blur()
} </script> </head> <body> <form> <input type="checkbox" id="check1" /> <br /> <input type="button" onclick="setFocus()" value="Set focus" /> <input type="button" onclick="loseFocus()" value="Lose focus" /> </form> </body> </html>