Return variable from jsp to another jsp

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Return variable from jsp to another jsp

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#1 by (1 votes)

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Hi, I have a jsp with the following function and I would like to know how to call it in another jsp ... Thanks to everyone!

 <script type="text/javascript">
       function getHeight(){
             var alto = document.getElementById('table').offsetHeight;
           return alto; 
       }
         
 
</script>

javascript jsp

asked by Iron Man 09.03.2018 в 09:27

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1 answer

Send the specific value in inputs generated with a FOR Apply an update statement, when uploading file to mysql table

score 1 · Accepted Answer

<script type="text/javascript">
       function getHeight(){
             var alto = document.getElementById('table').offsetHeight;
             document.getElementById('elemHeight').value = alto;
           return alto; 
       }                  
</script>

<input type="hidden" value="-1" id="elemHeight" name="elem">

JSP

To collect the data in the JSP you just have to call the function getParameter() with the name of the element of your form, getParameter('elem')

The best option is to save the value in a hidden input and retrieve it in the JSP when you submit the form. To check that the value is passed correctly you initialize the "hidden" to -1 to check in the jsp that the value of the input is different from -1. If you do not have a form, you can create it even if only for that element.