<label class="input_checkbox">
<input type="checkbox" name="sell_area" vlaue="0">
<span>甘肃</span>
</label>
<label class="input_checkbox">
<input type="checkbox" name="sell_area" vlaue="1">
<span>青海</span>
</label>
<label class="input_checkbox">
<input type="checkbox" name="sell_area" vlaue="2">
<span>陕西</span>
</label>
<label class="input_checkbox">
<input type="checkbox" name="sell_area" vlaue="3">
<span>宁夏</span>
</label>

function returnCheckboxVal(name){
var data="";
$('input:checkbox[name="'+name+'"]:checked').each(function(){
data += $(this).attr("vlaue")+",";
});
return data.substring(0,data.length-1);
}

function returnCheckboxItem(name){
var data="";
$('input:checkbox[name="'+name+'"]:checked').each(function(){
data += $(this).siblings('span').html()+",";
});
return data.substring(0,data.length-1);
}