Solved

Automatically check box when certain item is selected in a select drop down

Posted on 2015-02-06
3
93 Views
Last Modified: 2015-02-06
I have a SELECT and a CHECKBOX control on my form. When a certain option is selected (Volvo), I'd like the checkbox to automatically get checked. Can someone assist?

<select>
   <option value="volvo">Volvo</option>
   <option value="saab">Saab</option>
</select>
<INPUT TYPE=CHECKBOX NAME="volvo">Yes! Volvo was selected!<P>
0
Comment
Question by:earwig75
  • 2
3 Comments
 
LVL 7

Accepted Solution

by:
Robert Sherman earned 500 total points
ID: 40594694
Quick and sloppy version:

<select id="ddlCar" onchange="var e = document.getElementById('ddlCar');var strUser = e.options[e.selectedIndex].text;var bool_volvo = (strUser == 'Volvo');document.getElementById('check_volvo').checked = bool_volvo;">
   <option value="volvo">Volvo</option>
   <option value="saab">Saab</option>
</select>
<INPUT TYPE=CHECKBOX NAME="volvo" id="check_volvo">Yes! Volvo was selected!<P> 
</body>
</html>

Open in new window

0
 
LVL 7

Expert Comment

by:Robert Sherman
ID: 40594719
Here's the same thing, with code separated out and a little easier to follow:

<script>
  function volvoCheck() {
  var e = document.getElementById('ddlCar');
  var strUser = e.options[e.selectedIndex].text;
  if (strUser == 'Volvo')  document.getElementById('check_volvo').checked = true;
}
</script>
<select id="ddlCar" onchange="volvoCheck();">
   <option value="">Please select:</option>
   <option value="volvo">Volvo</option>
   <option value="saab">Saab</option>
</select>
<INPUT TYPE=CHECKBOX NAME="volvo" id="check_volvo">Yes! Volvo was selected!<P> 
</body>
</html>

Open in new window

0
 

Author Closing Comment

by:earwig75
ID: 40594725
Thank you!
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Use these top 10 tips to master the art of email signature design. Create an email signature design that will easily wow recipients, promote your brand and highlight your professionalism.
International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
In this tutorial viewers will learn how to embed Flash content in a webpage using HTML5. Ensure your DOCTYPE declaration is set to HTML5: "<!DOCTYPE html>": Use the <object> tag to embed Flash content.: To specify that the object is Flash content, d…
The viewer will learn the benefit of using external CSS files and the relationship between class and ID selectors. Create your external css file by saving it as style.css then set up your style tags: (CODE) Reference the nav tag and set your prop…

856 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question