即使未选中也获取复选框值？

Question

Is there a way to get the values of all checkboxes, even if they are not checked?

HTML:

<input type="checkbox" name="color[]" value="1"/>
<input type="checkbox" name="color[]" value="2"/>
...

JS:

$("input[name='color[]']").serialize();

Something like the above, but I want the values even if they are not checked. Perhaps I need to put them into an array first before serialising?

Answer 1

1. Clone them to avoid altering the original state of the checkboxes
2. Set the cloned items checked to true
3. Serialize

 document.write($('input[name="color[]"]').clone().prop('checked', true).serialize()); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.0/jquery.min.js"></script> <input type="checkbox" name="color[]" value="1" /> <input type="checkbox" name="color[]" value="2" /> 

Answer 2

The simple solution seems to be missing, so:

 var serializedValues = $('input[name="color[]"]').map(function(i, e) { return encodeURIComponent(e.name) + "=" + encodeURIComponent(e.value); }).get().join("&"); snippet.log(serializedValues); 

 <input type="checkbox" name="color[]" value="1" /> <input type="checkbox" name="color[]" value="2" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.0/jquery.min.js"></script> <!-- Script provides the `snippet` object, see http://meta.stackexchange.com/a/242144/134069 --> <script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script> 

That's assuming you really want the same output that seralize would give you.