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如何在jsp中获取Javascript函数的值?

[英]How can i get value of Javascript function, inside jsp?

This is my demo.jsp page 这是我的demo.jsp页面

<head>
    <script>           
        function source(key){
            var k=document.getElementById(key);
            var UserSelectedOption = k.options[k.selectedIndex].text;
            alert(UserSelectedOption);               
        }           
    </script>            

<body>
    <%
       //How can i get UserSelectedOption value here;
    %>
</body>

Here i'm getting UserSelectedOption is "hello",how can i use it inside jsp body page.thanks for your help. 在这里,我得到的UserSelectedOption是“ hello”,我如何在jsp主体页面中使用它。感谢您的帮助。

you have to only show the content, you can show in a div 您只需要显示内容,就可以在div中显示

<body>
   <div id="divId"></div>  
</body>

//-------// // // -------

function source(key){
            var k=document.getElementById(key);
            var UserSelectedOption = k.options[k.selectedIndex].text;
            alert(UserSelectedOption);               
            document.getElementById("divId").innerHTML=UserSelectedOption;
        }   

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