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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("這是個人簡介，禁止復(fù)制")
            } 
        </script>
    </head>
    <body>
        <form>
            個性介紹：<br/><textarea name=" introduction" cols="30" rows="4" onselect="fun()">小明：
            PHP高級工程師
            全棧工程師</textarea>
        </form>
    </body>
</html>


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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("這是個人簡介，禁止復(fù)制") } </script> </head> <body> <form> 個性介紹：<br/><textarea name=" introduction" cols="30" rows="4" onselect="fun()">小明： PHP高級工程師 全棧工程師</textarea> </form> </body> </html>