JavaScript: grid.selection returns 'undefined'

Question

0.00/5 (No votes)

See more:

Using the code at http://dojotoolkit.org/reference-guide/1.8/dojox/grid/DataGrid.html#working-with-selections[^], I coded to populate the results into the grid (see the related code below).

HTML

<table dojotype="dojox.grid.DataGrid" id="grid" noDataMessage="No results found in the current map extent" 
    style="height:250px; overflow:scroll; font-size:smaller;" selectionMode="single" >
  <thead>
    <tr>
      <th field="OBJECTID" width=25px >Id</th>
      <th field="STATION_STOP_SITE" width=120px  >Location Site</th>
      <th field="INCIDENTFULLADDRESS"  width=170px    >Address</th>
    </tr>
  </thead>
</table>
...
dojo.require("dojo.store.Memory");
dojo.require("dgrid.Selection");
dojo.require("dojo.on");
dojo.require("dojo.dom");
dojo.require("dojo.domReady!");
dojo.require("dojo.parser");
....
function GetItemFromGrid(e) {
  var count = e.rowCount;       // return 115
  var items = grid.selection.getSelected();
  ...       }

However, grid.selection returns 'undefined'. I tried to get the row and then retrieve its values, but could not find why the selection dose not work. Great appreciate if you can help.

Posted 16-Dec-14 7:19am

s yu

Add a Solution

Comments

ZurdoDev 16-Dec-14 14:29pm

Where is grid defined?

s yu 16-Dec-14 14:58pm

See my posted code,
<table dojotype="dojox.grid.DataGrid" id="grid" ... >
Thanks.

ZurdoDev 16-Dec-14 15:06pm

But "grid" in JavaScript means nothing (undefined) until you define it.

You need to set var grid = $("#grid") or something like that but it won't magically know what you are referring to.

s yu 16-Dec-14 15:16pm

I tried this below:
var g = document.getElementById('grid');
but g.selection is still undefined. Any advisory? Thanks.

ZurdoDev 16-Dec-14 15:32pm

.selection is not a built-in JavaScript method which means to call grid.selection, grid needs to be of some type. You should go back to wherever you found the code and see how it works.

s yu 17-Dec-14 10:18am

I use dojotype="dojox.grid.DataGrid" that is defined the same as the sample in http://dojotoolkit.org/reference-guide/1.7/dojox/grid/DataGrid.html. But I always got grid.selectionselectioIndex = -1. In my debugging, I have tried multiple ways, and finally got the solution for this problem. In the onRowClick(e) event, I got the index of the row clicked by .focus.rowIndex (or e.rowOverRow), then I can retrieve the values though e._by_idx[indexNo].item.AttributeName. Thanks for your help.

ZurdoDev 17-Dec-14 10:19am

Please post that as a solution so that it no longer shows as unanswered.

Glad to hear you got it working.

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)