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    <p>Consider using the the 'checked' parameter of you checkOnly function to determine which checkbox the user checked (maybe give them unique ids). As your logic stands now, if you check the first checkbox, it will clear out the checkboxes on the last four. Then if you check the last checkbox, it will still clear out the last four checkboxes <strong><em>because the first checkbox is still checked</em></strong>. This makes it look like the last four checkboxes are disabled even though they aren't.</p> <p>For example:</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;title&gt;FooBar&lt;/title&gt; &lt;script language="javascript"&gt; function checkOnly(myCheckbox) { var checkboxChanged = false; var checkedTotalValue = 0; var changedTotalValue = 0; for(var i = 0; i &lt; document.myForm.elements.length; i++) { if(document.myForm.elements[i].name != myCheckbox.name) { if(document.myForm.elements[i].checked == true) { checkboxChanged = true; changedTotalValue += parseInt(document.myForm.elements[i].value); } document.myForm.elements[i].checked = false; } if(document.myForm.elements[i].checked == true) { checkedTotalValue += parseInt(document.myForm.elements[i].value); } } if(checkboxChanged) { alert('Checked: ' + checkedTotalValue + ', Changed: ' + changedTotalValue); } } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;form name="myForm"&gt; &lt;input type="checkbox" name="checkboxGroup1" id="cb" value="1" onClick="checkOnly(this)"&gt; &lt;input type="checkbox" name="checkboxGroup1" id="cb" value="1" onClick="checkOnly(this)"&gt; &lt;input type="checkbox" name="checkboxGroup1" id="cb" value="1" onClick="checkOnly(this)"&gt; &lt;input type="checkbox" name="checkboxGroup1" id="cb" value="1" onClick="checkOnly(this)"&gt; &lt;input type="checkbox" name="checkboxGroup2" id="cb" value="1" onClick="checkOnly(this)"&gt; &lt;input type="checkbox" name="checkboxGroup2" id="cb" value="1" onClick="checkOnly(this)"&gt; &lt;input type="checkbox" name="checkboxGroup2" id="cb" value="1" onClick="checkOnly(this)"&gt; &lt;input type="checkbox" name="checkboxGroup2" id="cb" value="1" onClick="checkOnly(this)"&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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    1. POCheckbox to act like radio button, check first four or last four checkboxes but not both- javascript?
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    1. USScott Wagner
    1. USScott Wagner
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    1. POCheckbox to act like radio button, check first four or last four checkboxes but not both- javascript?
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    1. VO
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    1. COcan u put it on a piece of code
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      1. USuser2092317
    2. COupdated to include and example
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      1. USScott Wagner
    3. COhow to get an alert when all the checked checkbox are unchecked.
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