如何找到 javascript 中动态行的总和

Question

我正在使用 JavaScript 动态显示文本框

和计算都用在javascript喜欢

function add_number(k) {
    var rate = parseFloat(document.getElementById("rate-"+k).value);
    var units = parseFloat(document.getElementById("unit-"+k).value);
    var disc = parseFloat(document.getElementById("dis-"+k).value);
    var result = rate * units;
    var discnt =result - disc;
    var disamt =parseFloat(discnt).toFixed(2);
    var utgp = 9;
    var persnt = parseFloat((discnt * utgp) /100).toFixed(2);
    var totl = discnt +(persnt * 2);
    var totls = parseFloat(totl).toFixed(2);
    document.getElementById("taxs-"+k).value = disamt;
    document.getElementById("utgp-"+k).value = utgp;
    document.getElementById("utg-"+k).value = persnt;
    document.getElementById("cgstp-"+k).value = utgp;
    document.getElementById("cgst-"+k).value = persnt;
    document.getElementById("total-"+k).value = totls;
    document.getElementById("taxtotal").value = disamt;
}

如何在此处找到总税额显示最后输入的值我必须显示每次点击税额字段在下面的列中显示总计如何计算？

Answer 1

#This may Help you out#
var total=0;
function add_number(k) {
var rate = parseFloat(document.getElementById("rate-"+k).value);
var units =parseFloat(document.getElementById("unit-"+k).value);
var disc = parseFloat(document.getElementById("dis-"+k).value);
var result = rate * units;
var discnt =result - disc;
var disamt =parseFloat(discnt).toFixed(2);
var utgp = 9;
var persnt = parseFloat((discnt * utgp) /100).toFixed(2);
var totl = discnt +(persnt * 2);
var totls = parseFloat(totl).toFixed(2);
document.getElementById("taxs-"+k).value = disamt;
document.getElementById("utgp-"+k).value = utgp;
document.getElementById("utg-"+k).value = persnt;
document.getElementById("cgstp-"+k).value = utgp;
document.getElementById("cgst-"+k).value = persnt;
document.getElementById("total-"+k).value = totls;
document.getElementById("taxtotal").value = disamt;
total = parseFloat(total)+parseFloat(totls);
alert(total);
}

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