Jump to content

build a checkbox list based on selection of drop down form field


svgmx5

Recommended Posts

i want to build a checkbox list that displays information based on the selection from a drop down menu.

 

So if someone selects cars i want a the following options to display as a checklist

 

so it wold be .... cars->chevy, ford, nissan to be displayed in a checklist format, that way they can select the options they want

 

I'm really new to JavaScript so i'm not sure how to start.

 

I hope someone here can help me

Link to comment
Share on other sites

I would just build all of the checkbox lists and then use style properties to show/hide the appropriate lists.

 

Example:

<html>
<head>
  
<script type="text/javascript">

function showList(selectObj)
{
    var lists = new Array('cars', 'computers', 'sports');
    var selectedListID = selectObj.options[selectObj.selectedIndex].value;
    var divObj;

    for(i=0; i<lists.length; i++)
    {
        divObj = document.getElementById(lists[i]);
        divObj.style.display = (selectedListID==lists[i]) ? '' : 'none';
    }
    return;
}

window.onload = function()
{
    showList(document.getElementById('listType'));
    return;
}
</script>
</head>
<body>

<select name="listType" id="listType" onchange="showList(this);">
  <option value="cars">Cars</option>
  <option value="computers">Computers</option>
  <option value="sports">Sports</option>
</select>
<br />
<div id="cars">
  <input type="checkbox" name="cars[]" value="Honda"> Honda<br />
  <input type="checkbox" name="cars[]" value="Ford"> Ford<br />
  <input type="checkbox" name="cars[]" value="Toyota"> Toyota<br />
</div>
<div id="computers">
  <input type="checkbox" name="computers[]" value="Dell"> Dell<br />
  <input type="checkbox" name="computers[]" value="HP"> HP<br />
  <input type="checkbox" name="computers[]" value="Alienware"> Alienware<br />
</div>
<div id="sports">
  <input type="checkbox" name="sports[]" value="Football"> Football<br />
  <input type="checkbox" name="sports[]" value="Basketball"> Basketball<br />
  <input type="checkbox" name="sports[]" value="Baseball"> Baseball<br />
</div>

</body>
</html>

Link to comment
Share on other sites

This thread is more than a year old. Please don't revive it unless you have something important to add.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.