如图,计算 Total 的和,用 JQuery 实现如下:

<input class="form-control total" name="total-1">
<input class="form-control total" name="total-2">
<input class="form-control total" name="total-3">

//JQuery 遍历同一组 class 的 input 的值求和
function totalSum(){
    let sum = 0;
    $(".total").each(function(){
	total = Number($(this).val());
	sum = sum + total;
    });
    //console.log(sum);
    return sum;
}
(adsbygoogle = window.adsbygoogle || []).push({});