js判断序列化表单是否包含空值

<form id="form1">
    <input type="text" value="1" name="Total"  />
</form>

//判断序列化表单是否包含空值
var data = $("#form").serialize();
var array = data.split("&");
for (var i = 0; i < array.length; i++) {
    var kwarr = array[i].split("=");
    for (var j = 0; j < kwarr.length; j++) {
        if (kwarr[j] == null || kwarr[j] == '') {
            alert("请把必填信息填上")
            return false;
        }
    }
}