javascript - 如何汇总表格行中的所有总数?JS
问题描述
新手在这里.. 我一直在寻找某种函数,可以合计表中一种输入类型的数量,即 Amount 输入。我已经尝试对数量及其单元格使用 parseInt 函数,但它不起作用。我认为它只获得 .innerHTML 而不是它包含的应该是数字。
var entryButton = document.getElementById('inputButton')
const tbodyEl = document.querySelector("tbody");
var row = 1;
//click button event
entryButton.addEventListener('click', tableDisplay);
//input value and displaying information
function tableDisplay(e) {
e.preventDefault()
var name = document.getElementById('inputName').value;
var amount = document.getElementById('inputAmount').value;
var date = document.getElementById('inputDate').value;
var remarks = document.getElementById('inputRemarks').value;
document.getElementById('inputName').value = '';
document.getElementById('inputAmount').value = '';
document.getElementById('inputDate').value = '';
document.getElementById('inputRemarks').value = '';
if (!name || !amount || !date || !remarks) {
alert("Please fill all the blanks")
return;
}
name.value = " ";
amount.value = " ";
date.value = " ";
remarks.value = " ";
var table = document.getElementById('displayTable');
var newRow = table.insertRow(row);
var cell1 = newRow.insertCell(0);
var cell2 = newRow.insertCell(1);
var cell3 = newRow.insertCell(2);
var cell4 = newRow.insertCell(3);
cell1.innerHTML = name
cell2.innerHTML = date
cell3.innerHTML = amount
cell4.innerHTML = remarks
selectedRow()
row++;
}
//adding total amount function??
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link
href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css"
rel="stylesheet"
integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3"
crossorigin="anonymous"
/>
<script
src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"
integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p"
crossorigin="anonymous"
></script>
<link
href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.no-icons.min.css"
rel="stylesheet"
/>
<link
href="//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css"
rel="stylesheet"
/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<link rel="stylesheet" href="style.css" />
<title>Expense Tracker</title>
</head>
<body>
<h1 class="d-flex justify-content-center mb-5 mt-5">Expense Tracker</h1>
<form class="form d-flex justify-content-center mb-5">
<span class="fw-bolder m-1"
>Name: <input class="m-1" id="inputName" type="text"
/></span>
<span class="fw-bolder m-1"
>Date: <input class="m-1" id="inputDate" type="date"
/></span>
<span class="fw-bolder m-1"
>Amount: <input type="number" class="totalAmount m-1" id="inputAmount"
/></span>
<span class="fw-bolder m-1"
>Remarks <input class="m-1" id="inputRemarks" type="text"
/></span>
<button class="m-1" id="inputButton">
<i class="icon-level-down fs-4"></i>
</button>
<!-- How to delete specific row -->
<button class="m-1" type="button" id="deleteSelection">
<i class="icon-remove-sign fs-4"></i>
</button>
</form>
<table class="table m-5" id="displayTable">
<thead>
<tr id="numero">
<th scope="col">
<i class="icon-file-text fw-bolder fs-3"></i> Description
</th>
<th scope="col"><i class="icon-calendar fw-bolder fs-3"></i> Date</th>
<th scope="col"><i class="icon-usd fw-bolder fs-3"></i> Amount</th>
<th scope="col"><i class="icon-pencil fs-3"></i> Remarks</th>
</tr>
</thead>
<tbody></tbody>
</table>
<!-- //passing total amount?? -->
<span class="d-flex justify-content-center"
>Total: <input type="number" id="total" value="0" disabled
/></span>
<script src="script.js"></script>
</body>
</html>
解决方案
我创建了一个名为 total() 的函数,它计算“金额”列的总数并将其打印在输入 #total 中。
var entryButton = document.getElementById('inputButton')
const tbodyEl = document.querySelector("tbody");
var row = 1;
//click button event
entryButton.addEventListener('click', tableDisplay);
//input value and displaying information
function tableDisplay(e) {
e.preventDefault()
var name = document.getElementById('inputName').value;
var amount = document.getElementById('inputAmount').value;
var date = document.getElementById('inputDate').value;
var remarks = document.getElementById('inputRemarks').value;
document.getElementById('inputName').value = '';
document.getElementById('inputAmount').value = '';
document.getElementById('inputDate').value = '';
document.getElementById('inputRemarks').value = '';
if (!name || !amount || !date || !remarks) {
alert("Please fill all the blanks")
return;
}
name.value = " ";
amount.value = " ";
date.value = " ";
remarks.value = " ";
var table = document.getElementById('displayTable');
var newRow = table.insertRow(row);
var cell1 = newRow.insertCell(0);
var cell2 = newRow.insertCell(1);
var cell3 = newRow.insertCell(2);
var cell4 = newRow.insertCell(3);
cell1.innerHTML = name
cell2.innerHTML = date
cell3.innerHTML = amount
cell4.innerHTML = remarks
total()
row++;
}
function total(){
var table = document.getElementById('displayTable');
let total = 0
for(let i = 1; i<table.rows.length; i++){
total+=Number(table.rows[i].cells[2].innerText)
}
const totalInput = document.getElementById('total')
totalInput.value=total
}
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