チェックボックス選択された値を取得するjQueryの

<ul id="reason_ul">
	<input name="reason" type="checkbox" value="1"><span>产品使用一段时间后不工作了</span>
	<input name="reason" type="checkbox" value="2"><span>产品一收到就是坏的</span>
	<input name="reason" type="checkbox" value="3"><span>产品不能开机或自己启动</span>
	<input name="reason" type="checkbox" value="4"><span>产品不能充电</span>
	<input name="reason" type="checkbox" value="5"><span>产品外观非人为改变</span>
	<input name="reason" type="checkbox" value="6"><span>产品的内部或外部的损坏</span>
	<input name="reason" type="checkbox" value="7"><span>其他</span>
</ul>

jqueryのコード

function do_submit() {
	var reason_arr = new Array();
	$.each($("input[name='reason']"), function(){
		if(this.checked){
			reason_arr.push($(this).val());
		}
	});
	var vals = reason_arr.join(",");
	console.log(vals);
}