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我在表中添加行並刪除，這工作正常。使用oninput=""事件，我也可以通過調用javascript函數來計算總成本。 現在，我添加<form></form>的那一刻，既不能添加行也不能向前移動。我是JavaScript新手，不知道發生了什麼。請幫助別人。oninput event in html works fine <form></form> is added？
<div class="container">
<p>Add and Delete Items with Total Cost Value</p>
<form>
<div id="tableDiv">
<table id="myTableHead">
<tr>
<th>Item Name</th>
<th>Item Cost</th>
</tr>
<tr>
<td><input type="text" name="ItemName[]" id="ItemName" /></td>
<td><input class="ItemCostClass" type="number" name="ItemCost[]" oninput="myTotalFunction()" id="ItemCost" /></td>
</tr>
</table>
<table id="myTable">
</table>
<table id="myTableTot">
<tr>
<td><input type="text" name="Total" value="Total Cost Value --->" readonly /></td>
<td><input type="number" name="TotalValue" id="TotalValue" value=0 readonly /></td>
</tr>
</table>
</div>
<br>
<button onclick="myCreateFunction()">Create row</button>
<button onclick="myDeleteFunction()">Delete row</button>
</form>
</div>
<script>
function myCreateFunction() {
var TotalCostValueCurrent = parseFloat(document.getElementById("TotalValue").value);
if (TotalCostValueCurrent <= 25000) {
var table = document.getElementById("myTable");
var row = table.insertRow(-1);
var cell1 = row.insertCell(0);
var cell2 = row.insertCell(1);
cell1.innerHTML = '<input type="text" name="ItemName[]" id="childItemName" />';
cell2.innerHTML = '<input class="ItemCostClass" type="number" name="ItemCost[]" oninput="myTotalFunction()" id="childItemCost" />';
} else {
window.alert("Sorry, You Have Reached Max Shipping Value Limit of 25000, please reduce Pieces to Max Value of 25000");
}
}
function myTotalFunction() {
var arrItemCost = document.getElementById("tableDiv").getElementsByClassName("ItemCostClass");
var arrLen = arrItemCost.length;
var i = 0;
var itemCostSum = 0;
while (i <= arrLen && itemCostSum <= 25000) {
if (itemCostSum <= 25000) {
itemCostSum = itemCostSum + parseFloat(arrItemCost[i].value);
i++;
document.getElementById("TotalValue").value = Math.ceil(itemCostSum); // Update Total Value
}
}
}
function myDeleteFunction() {
var arrItemCost = document.getElementById("tableDiv").getElementsByClassName("ItemCostClass");
var arrLen = arrItemCost.length;
var TotalValueCurrent = parseFloat(document.getElementById("TotalValue").value);
var itemCostFinal = 0;
itemCostFinal = TotalValueCurrent - parseInt(arrItemCost[arrLen-1].value);
//FINAL OUTPUT
document.getElementById("myTable").deleteRow(-1); // Delete Last Row
document.getElementById("TotalValue").value = Math.ceil(itemCostFinal); // Final Cost Value
document.getElementById("tableDiv").getElementsByClassName("ItemCostClass").pop(); // Drop last value of Item Array
}
</script>
千恩萬謝。它現在工作正常。 – docneogi
沒問題總是愛幫忙。 – Sand