Scriptlet in js

Question

i have a jsp page... i am adding some content to page dynamically depending upon request parameters (an array will be returned by request) based on this i have to create a drop down. i want to do this on change of another drop down.. so can be done using javascript only but i am unable to use scriptlet in js, is this really possible??

EDIT : i wanna perform some actions on the values retrieved from scriptlet as well

it will be of this sort

function changeMethod(){
    var templateselected = document.getElementById("templateDropDown");
    var versionDropDown = document.getElementById("versionDropDown");
    if ( templateselected.options.selectedIndex != -1)
    {
        var selected=templateselected[templateselected.options.selectedIndex].value;
        removeChildNodes(versionDropDown);
        <% 
        RetrieveTempSecVersions[] lsListOfFiles = (RetrieveTempSecVersions []) request.getAttribute("templateNames") ;
        for (int i=0 ; i < lsListOfFiles[1].getVersionNumber().length ; i++ ) {
            System.out.println("helllooooo");%>
        versionDropDown.innerHTML+='<OPTION VALUE="'+<%=lsListOfFiles[1].getVersionNumber()[i]%>+'">'+<%=lsListOfFiles[1].getVersionNumber()[i]%>+'</OPTION>';
        <%}%>
    }
}

Community · Accepted Answer · 2017-05-23 10:33:07Z

1

Yes you can have something like this

function addCombo() {
    var textb = document.getElementById("txtCombo");
    var combo = document.getElementById("combo");

    var option = document.createElement("option");
    <c:forEach var="state" items="${stateList}" varStatus="status">  
    option.text = "${state}";
    option.value = "${state}";
    try {
        combo.add(option, null); //Standard
    }catch(error) {
        combo.add(option); // IE only
    }
    </c:forEach>
    textb.value = "";
}

Also See

Note: I haven't tested this code , this is just a demonstration

edited May 23, 2017 at 10:33

CommunityBot

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answered Dec 22, 2010 at 12:53

Jigar Joshi

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2 Comments

Varun Over a year ago

life.java - first of all very nice nic name.. secondly wont we need to create option element again and again?? and do we have if statements also present in jstl??

Jigar Joshi Over a year ago

first of all thanks, secondly this is just a demonstration you will have to modify it according to your need and yes we do have if in jstl check here

Bozho · Accepted Answer · 2010-12-22 12:52:44Z

0

If the javascript is inline or declared in the same jsp page, there is no problem. Something like:

<script type="text/javascript">
var foo = '${foo}'; // or <%= foo => if you like
</script>

If it is in a separate .js file, then you should serve the .js file through a special servlet.

answered Dec 22, 2010 at 12:52

Bozho

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2 Comments

Bozho Over a year ago

@varun - what are these "actions". And what stops you from performing them?

Varun Over a year ago

@ Bozho - i tried the commented part it didnt worked please refer code provided above

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