how to get values from an arraylist passed as a parameter in js function from jsp

Question

I have a called a Servlet and I am sending an ArrayList with request attribute from Servlet to JSP. I am calling a js function from the same JSP in which I am passing the ArrayList as a param to the js function. I want to retrieve the values from this ArrayList.

Code as follow:

<c:if test="${currentPage lt noOfPages}">   
    <a onclick="OnNextButtonClick(${currentPage},'${al}');">
       <Next>
    </a>
</c:if>   
   //Here al is the ArrayList

<script type="text/javascript"> 
function OnNextButtonClick(currentPage,al)
{
  alert("current page == " + currentPage );
  alert("current page == " + al);

  var arr = new Array();
  var arr = al.split(','); 
  alert(arr);
}

This arr is giving me values as follows:

[com.package@1def,com.package@fkbe23,com.package@546fhfg]

I want the values stored at this location.

Can someone help me?

And I want a pony. Now what is your question. (Hint: "Can someone help me?" is not a question.) — Joe C
– Joe C, Commented Jan 18, 2017 at 6:57
I think the values of arr is object. extract it by using . and the members of that object you want to retrieve. — msagala25
– msagala25, Commented Jan 18, 2017 at 6:58
@LKTN.25 I tried it... I did arr[1].id ....It gave me an undefined as a value. — Karan mehta
– Karan mehta, Commented Jan 18, 2017 at 7:05
@JoeC I want the values stored at the locations mentioned above. — Karan mehta
– Karan mehta, Commented Jan 18, 2017 at 7:06

Salmaan C · Accepted Answer · 2017-01-18 07:15:20Z

1

First of all List obj = dao.listimpl();this is java code you have pasted, try to paste the exact object which you trying to iterate.

Though i would recommend use a very lightweight javascript library Loadash which is very handy, when you are dealing with array/objects and looping through these items and many more util methods.

_.forOwn(obj, function(value, key) { } );

Loadash - forOwn

Iterates over own enumerable string keyed properties of an object and invokes iteratee for each property. The iteratee is invoked with three arguments: (value, key, object). Iteratee functions may exit iteration early by explicitly returning false

answered Jan 18, 2017 at 7:15

Salmaan C

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