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JavaScript ??? ?? ???(onmouseout)

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??? ?? ?????: 

<!DOCTYPE HTML>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
        <title>php.cn</title>
        <script>
            function fun(){
                window.alert("提交成功了")
            } 
        </script>
    </head>
    <body>
        <form>
            機(jī)密：
            <input name="txt" type="text" >
            <input name="" type="button" value="提交之后移開(kāi)鼠標(biāo)"  onmouseout="fun()"/>
        </form>
    </body>
</html>


???? ??
||
<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>php.cn</title> <script> function fun(){ window.alert("提交成功了") } </script> </head> <body> <form> 機(jī)密： <input name="txt" type="text" > <input name="" type="button" value="提交之后移開(kāi)鼠標(biāo)" onmouseout="fun()"/> </form> </body> </html>