Javascript ~ form and checkbox

這是我想做個東西~~~~~~在滿足特定group 的checkbox至少打勾一個

才可以做動作的程式

是之前張搞幫我寫的~~~~~lol


HTML
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<p id="size"><strong>Size</strong>
<label><input type="checkbox" value="1" name="size_type[]"/>11111</label>
<label><input type="checkbox" value="2" name="size_type[]"/>2222</label>
<label><input type="checkbox" value="3" name="size_type[]"/>333</label>
<label><input type="checkbox" value="4" name="size_type[]"/>444</label>
<label><input type="checkbox" value="5" name="size_type[]"/>55555</label>
<label><input type="checkbox" value="6" name="size_type[]"/>6666</label>

</p>
<p id="type"><strong>Type</strong>
<label><input type="checkbox" value="1" name="type_group[]"/>aaaa</label>
<label><input type="checkbox" value="2" name="type_group[]"/>bbbb</label>
<label><input type="checkbox" value="3" name="type_group[]"/>cccccc</label>
<label><input type="checkbox" value="4" name="type_group[]"/>ddddd</label>
</p>

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Javascirpt
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var c1 = $('#size input:checked').length;
var c2 = $('#type input:checked').length;

if(c1 > 0 && c2 > 0 ){
//do something
}
else
{
alert('please fill in the Size, Type at least one');
}

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