我有一个表，其中包含未知数目的行，每个表都有两个单选按钮，分别名为weight [i]和Winner [i]，并带有ID，例如weight11，weight12，weight21，weight22，winner11，winner12等。 ..
我正在尝试创建一个循环，以计算所有这些单选按钮的值的乘积之和。
单选按钮的名称包含一个变量时，我无法编写正确的查询来获取单选按钮的值。
您能看到正确的查询是什么，还是可以找到其他解决方案？
我尝试使用php进行循环，但是我无法获取php中的行数值，因为它可以动态更改而无需重新加载表。
表格：
<table class="comparisontable" id="ComparisonTable">
<col width=15%>
<col width=15%>
<col width=20%>
<col width=5%>
<col width=20%>
<col width=25%>
<tr>
<th class="headingleft">Criteria</th>
<th class="headingcenter">Criteria weight</th>
<th class="headingcenter"><p><p><input onClick="this.setSelectionRange(0, this.value.length)" onMouseOver="this.style.cursor='pointer'" class="productchoice" type="text" id="productA" name="productA" value = "<?php echo $array[0]["ProductA"];?>"></p><p id=prodscoreA>Score: </p></th>
<th class="headingcenter">
<th class="headingcenter"><p><p><input onClick="this.setSelectionRange(0, this.value.length)" onMouseOver="this.style.cursor='pointer'" class="productchoice" type="text" id="productB" name="productB" value = "<?php echo $array[0]["ProductB"];?>"></p><p id=prodscoreB>Score: </p></th>
<th class="headingleft">Comment</th>
</tr>
<!-- Criteria rows creation and loading, in a loop: -->
<?php
$i = 1;
while($array[$i-1]["FormNumber"]) {
?>
<tr>
<td class="criteria"><input onClick="this.setSelectionRange(0, this.value.length)" onMouseOver="this.style.cursor='pointer'" class="criteriainput" type="text" id="criteria<?php echo "$i";?>" name="criteria[<?php echo "$i";?>]" value="<?php echo $array[$i-1]["Criteria"];?>"></td>
<td class="weight">
<li class="star-weight">
<input type="radio" onclick="CalculateScores()" name="weight[<?php echo "$i";?>]" id="weight<?php echo "$i";?>3" value="3" <?= $array[$i-1]["Weight"] == "3" ? 'checked' : '' ?> /><label for="weight<?php echo "$i";?>3"></label>
<input type="radio" onclick="CalculateScores()" name="weight[<?php echo "$i";?>]" id="weight<?php echo "$i";?>2" value="2" <?= $array[$i-1]["Weight"] == "2" ? 'checked' : '' ?> /><label for="weight<?php echo "$i";?>2"></label>
<input type="radio" onclick="CalculateScores()" name="weight[<?php echo "$i";?>]" id="weight<?php echo "$i";?>1" value="1" <?= $array[$i-1]["Weight"] == "1" ? 'checked' : '' ?> /><label for="weight<?php echo "$i";?>1"></label>
</li>
</td>
<td class="winner">
<input type="radio" onclick="CalculateScores()" name="winner[<?php echo "$i";?>]" id="winner<?php echo "$i";?>10000" value="10000" <?= $array[$i-1]["Winner"] == "10000" ? 'checked' : '' ?>> Winner</input><br>
<textarea class="commentinput" name="commentA[<?php echo "$i";?>]" id="commentA<?php echo "$i";?>" cols="1" rows="3"><?php echo $array[$i-1]["CommentA"];?></textarea>
</td>
<td>
<input type="radio" onclick="CalculateScores()" name="winner[<?php echo "$i";?>]" id="winner<?php echo "$i";?>100" value="100" <?= $array[$i-1]["Winner"] == "100" ? 'checked' : '' ?>> Tie</input><br>
<input class="hidden" type="radio" name="winner<?php echo "$i";?>" id="winner<?php echo "$i";?>0" value="0" <?= $array[$i-1]["Winner"] == NULL ? 'checked' : '' ?>><br>
</td>
<td class="winner">
<input type="radio" onclick="CalculateScores()" name="winner[<?php echo "$i";?>]" id="winner<?php echo "$i";?>1" value="1" <?= $array[$i-1]["Winner"] == "1" ? 'checked' : '' ?>> Winner</input><br>
<textarea class="commentinput" name="commentB[<?php echo "$i";?>]" id="commentB<?php echo "$i";?>" cols="1" rows="3"><?php echo $array[$i-1]["CommentB"];?></textarea>
</td>
<td class="comment">
<textarea class="commentinput" name="comment[<?php echo "$i" ;?>]" id="comment<?php echo "$i" ;?>" cols="1" rows="4"><?php echo $array[$i-1]["Comment"];?></textarea>
</td>
</tr>
<?php
$i++;
}
?>
</table>
JavaScript函数：
function CalculateScores() {
// Sum of product of weights and winners:
var SumProd = 0;
var l = 1;
var rows = document.getElementById("ComparisonTable").rows.length;
while(l < rows) {
SumProd += document.querySelector('input[name="weight[" + l + "]"]:checked').value*document.querySelector('input[name="winner[" + l + "]"]:checked').value;
l++;
}
我希望SumProd等于所检查的权重[l]和获胜者[l]单选按钮的乘积之和。
答案 0 :(得分：0)
内联查看注释，但不要忘记，对于每组单选按钮，您应该使用唯一的name属性值，并且需要使用直引号而不是智能引号。
// Get all the rows into an array:
let rows = Array.prototype.slice.call(document.querySelectorAll("tr"));
let sum = 0;
document.querySelector("button").addEventListener("click", function(){
// Loop over the array
rows.forEach(function(row){
// Get the selected radio button
let checkedButton = row.querySelector(":checked");
// If a selection was made, add the value (converted to a number) of the checked radio button to the sum
if(checkedButton !== null){
sum += +checkedButton.value;
}
});
console.log(sum); // Output result
});<table>
<tr>
<td>Choice 1:<input type="radio" value="5" name="g1"> Choice 2:<input type="radio" value="10" name="g1"></td>
</tr>
<tr>
<td>Choice 1:<input type="radio" value="15" name="g2"> Choice 2:<input type="radio" value="20" name="g2"></td>
</tr>
<tr>
<td>Choice 1:<input type="radio" value="25" name="g3"> Choice 2:<input type="radio" value="30" name="g3"></td>
</tr>
<tr>
<td>Choice 1:<input type="radio" value="35" name="g4"> Choice 2:<input type="radio" value="40" name="g4"></td>
</tr>
<tr>
<td>Choice 1:<input type="radio" value="45" name="g5"> Choice 2:<input type="radio" value="50" name="g5"></td>
</tr>
</table>
<button>Get Sum</button>
更新：
对于您的情况，在循环内，您只需要获取检查的权重和检查的获胜者单选按钮值，将它们相乘，然后将结果加到最终总和即可：
// Loop over the array
rows.forEach(function(row){
// Get the selected radio buttons
let weight = row.querySelector("[name^='weight']:checked");
let winner = row.querySelector("[name^='winner']:checked");
// If a selection was made, multiply the values (converted to a number)
// of the checked radio buttons and add to the sum
if(weight && winner){
sum += (+weight.value * +winner.value);
}
});