Guide to utilizing the jsp include tag with javascript

I have developed a page with a button that, when clicked, will insert a new row with an input field and dropdown box. The dynamic values in the dropdown are retrieved from an XML file. To accomplish this, I created a getdata.jsp page which returns value1value2. I included this page in my index.html where I intend to display the dropdown. However, the problem arises when trying to use the include tag in JavaScript - it does not work as expected. To address this issue, I need to include the page in my index.jsp so that the dropdown can be generated dynamically.

I am looking to incorporate my page here

cell4.innerHTML ="<%@include file="getdata.jsp" %>";

How can I successfully achieve this? Thank you.

javajavascriptajaxjsp

Answer №1

Just a couple of ideas to consider.

Typically, this task is accomplished using an ajax request instead of directly including the file like this. Using ajax allows you to update the data whenever necessary and maintains a clear separation between your server-side and client-side code. Here's an example:

xmlhttp.onreadystatechange = function() {
    if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
        cell4.innerHTML = xmlhttp.responseText;
    }
}
xmlhttp.open("GET","getdata.jsp",true);
xmlhttp.send();

Alternatively, if you still prefer to include the jsp file in this manner, you will need to include it from a jsp file as well. Currently, your script is likely in a ".js" file. Your web server won't process it as a jsp file, and the include statement will be ignored. You can change the file extension to ".jsp" and update the script tag's src attribute, but I would advise against this approach.

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