javascript - document.querySelectorAll 选择特定输入的id
问题描述
我有一个表,其中有两个单独的复选框输入。选择第一个输入时,会计算一个累积量。如果您选择第二个复选框,则功能错误(由于重复输入)。
功能
function updateTotals() {
var sum = Array.prototype.reduce.call(document.querySelectorAll("input.check:checked"),(a,v) => a + parseFloat(v.dataset.totalAmount), 0);
$('#checkedTotal').val(sum);
};
我需要做的是分离输入,也许使用一个类。我似乎无法理解语法,或者可能是在吠叫错误的树。就像是...
function updateTotals() {
var sum = Array.prototype.reduce.call(document.querySelectorAll ('.input').check:checked,(a,v) => a + parseFloat(v.dataset.totalAmount), 0);
$('#checkedTotal').val(sum);
};
我会将其添加为 jsfiddle 示例,但该表位于 Salesforce Visualforce 页面中,使用顶点字段。
提前致谢
更新
添加了 HTML
<div style="width:50%;">
<form id="j_id0:j_id2" name="j_id0:j_id2" method="post">
<input type="hidden" name="j_id0:j_id2" value="j_id0:j_id2">
<input disabled="disabled" id="checkedTotal" name="amount" placeholder="Selected Amount" step=".02" type="number">
<table id="invoicesTable" style="width:100%;">
<thead class="tableHeadBlue">
<tr>
<td>Select</td>
<td>Date</td>
<td>Type</td>
<td>Order</td>
<td>Amount</td>
<td>id</td>
<td>Select2</td>
</tr>
</thead>
<tbody>
<tr>
<td>
<label class="formCheck"><input id="j_id0:j_id2:j_id4:0:inputId" type="checkbox" name="j_id0:j_id2:j_id4:0:inputId" class="check" onchange="updateTotals();" style="font-size:26px;" data-total-amount="458.00">
</label>
</td>
<td><span id="j_id0:j_id2:j_id4:0:j_id7">19/04/2018</span>
<span style="color:red;">
</span>
</td>
<td>Invoice
</td>
<td>
<span style="color:Black"><span id="j_id0:j_id2:j_id4:0:j_id14">00006648</span>
</span>
</td>
<td><span id="j_id0:j_id2:j_id4:0:j_id16">$458.00</span></td>
<td><span id="j_id0:j_id2:j_id4:0:j_id18">8015D000000CsiH</span></td>
<td><input type="checkbox" name="j_id0:j_id2:j_id4:0:j_id20" class="check" style="font-size:26px;"></td>
</tr>
<tr>
<td>
<label class="formCheck"><input id="j_id0:j_id2:j_id4:1:inputId" type="checkbox" name="j_id0:j_id2:j_id4:1:inputId" class="check" onchange="updateTotals();" style="font-size:26px;" data-total-amount="200.00">
</label>
</td>
<td><span id="j_id0:j_id2:j_id4:1:j_id7">21/06/2018</span>
<span style="color:red;">
</span>
</td>
<td>Invoice
</td>
<td>
<span style="color:Black"><span id="j_id0:j_id2:j_id4:1:j_id14">00006849</span>
</span>
</td>
<td><span id="j_id0:j_id2:j_id4:1:j_id16">$200.00</span></td>
<td><span id="j_id0:j_id2:j_id4:1:j_id18">8015D000000DEuB</span></td>
<td><input type="checkbox" name="j_id0:j_id2:j_id4:1:j_id20" class="check" style="font-size:26px;"></td>
</tr>
<tr>
<td>
<label class="formCheck"><input id="j_id0:j_id2:j_id4:2:inputId" type="checkbox" name="j_id0:j_id2:j_id4:2:inputId" class="check" onchange="updateTotals();" style="font-size:26px;" data-total-amount="500.00">
</label>
</td>
<td>
<span style="color:red;"><span id="j_id0:j_id2:j_id4:2:j_id9">22/06/2018</span>
</span>
</td>
<td><span style="color:red;">Credit</span>
</td>
<td>
<span style="color:red"><span id="j_id0:j_id2:j_id4:2:j_id14">00006852</span>
</span>
</td>
<td><span id="j_id0:j_id2:j_id4:2:j_id16">$500.00</span></td>
<td><span id="j_id0:j_id2:j_id4:2:j_id18">8015D000000DHKW</span></td>
<td><input type="checkbox" name="j_id0:j_id2:j_id4:2:j_id20" class="check" style="font-size:26px;"></td>
</tr>
</tbody>
</table><div id="j_id0:j_id2:j_id24"></div>
</form>
</div>
解决方案
将类添加first
到中的第一个复选框,<tr>
并将类添加second
到中的第二个复选框<tr>
。
updateTotals
仅查询具有first
要避免的类的复选框second
。
function updateTotals() {
var sum = Array.prototype.reduce.call(document.querySelectorAll("input.check.first:checked"),(a,v) => a + parseFloat(v.dataset.totalAmount), 0);
$('#checkedTotal').val(sum);
};
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div style="width:50%;">
<form id="j_id0:j_id2" name="j_id0:j_id2" method="post">
<input type="hidden" name="j_id0:j_id2" value="j_id0:j_id2">
<input disabled="disabled" id="checkedTotal" name="amount" placeholder="Selected Amount" step=".02" type="number">
<table id="invoicesTable" style="width:100%;">
<thead class="tableHeadBlue">
<tr>
<td>Select</td>
<td>Date</td>
<td>Type</td>
<td>Order</td>
<td>Amount</td>
<td>id</td>
<td>Select2</td>
</tr>
</thead>
<tbody>
<tr>
<td>
<label class="formCheck"><input id="j_id0:j_id2:j_id4:0:inputId" type="checkbox" name="j_id0:j_id2:j_id4:0:inputId" class="check first" onchange="updateTotals();" style="font-size:26px;" data-total-amount="458.00">
</label>
</td>
<td><span id="j_id0:j_id2:j_id4:0:j_id7">19/04/2018</span>
<span style="color:red;">
</span>
</td>
<td>Invoice
</td>
<td>
<span style="color:Black"><span id="j_id0:j_id2:j_id4:0:j_id14">00006648</span>
</span>
</td>
<td><span id="j_id0:j_id2:j_id4:0:j_id16">$458.00</span></td>
<td><span id="j_id0:j_id2:j_id4:0:j_id18">8015D000000CsiH</span></td>
<td><input type="checkbox" name="j_id0:j_id2:j_id4:0:j_id20" class="check second" style="font-size:26px;"></td>
</tr>
<tr>
<td>
<label class="formCheck"><input id="j_id0:j_id2:j_id4:1:inputId" type="checkbox" name="j_id0:j_id2:j_id4:1:inputId" class="check first" onchange="updateTotals();" style="font-size:26px;" data-total-amount="200.00">
</label>
</td>
<td><span id="j_id0:j_id2:j_id4:1:j_id7">21/06/2018</span>
<span style="color:red;">
</span>
</td>
<td>Invoice
</td>
<td>
<span style="color:Black"><span id="j_id0:j_id2:j_id4:1:j_id14">00006849</span>
</span>
</td>
<td><span id="j_id0:j_id2:j_id4:1:j_id16">$200.00</span></td>
<td><span id="j_id0:j_id2:j_id4:1:j_id18">8015D000000DEuB</span></td>
<td><input type="checkbox" name="j_id0:j_id2:j_id4:1:j_id20" class="check second" style="font-size:26px;"></td>
</tr>
<tr>
<td>
<label class="formCheck"><input id="j_id0:j_id2:j_id4:2:inputId" type="checkbox" name="j_id0:j_id2:j_id4:2:inputId" class="check first" onchange="updateTotals();" style="font-size:26px;" data-total-amount="500.00">
</label>
</td>
<td>
<span style="color:red;"><span id="j_id0:j_id2:j_id4:2:j_id9">22/06/2018</span>
</span>
</td>
<td><span style="color:red;">Credit</span>
</td>
<td>
<span style="color:red"><span id="j_id0:j_id2:j_id4:2:j_id14">00006852</span>
</span>
</td>
<td><span id="j_id0:j_id2:j_id4:2:j_id16">$500.00</span></td>
<td><span id="j_id0:j_id2:j_id4:2:j_id18">8015D000000DHKW</span></td>
<td><input type="checkbox" name="j_id0:j_id2:j_id4:2:j_id20" class="check second" style="font-size:26px;"></td>
</tr>
</tbody>
</table><div id="j_id0:j_id2:j_id24"></div>
</form>
</div>
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