我要做的是从同一个组ID中获取两个数据组得分值并将它们加在一起:
https://jsfiddle.net/x0nyr9qn/51/
到目前为止我更新的版本:
https://jsfiddle.net/x0nyr9qn/61/
示例HTML:
<div class="quiz-block-container">
<div class="quiz-block-question" data-group-id="1" data-group-score="2">
</div>
<div class="quiz-block-question" data-group-id="1" data-group-score="3">
</div>
<div class="quiz-block-question" data-group-id="2" data-group-score="1">
</div>
<div class="quiz-block-question" data-group-id="2" data-group-score="3">
</div>
<div class="quiz-block-question" data-group-id="3" data-group-score="3">
</div>
<div class="quiz-block-question" data-group-id="3" data-group-score="1">
</div>
<div class="quiz-block-question" data-group-id="4" data-group-score="1">
</div>
<div class="quiz-block-question" data-group-id="4" data-group-score="1">
</div>
</div>
我要做的是用类&#34; quiz-block-question&#34;循环遍历块。获取data-group-id,然后按ID返回每个组的数据组分数,这样我就可以将它们一起添加到该组中的那些值的总分中,并为每个group-id执行此操作。
我一直在玩的JS例子以及他们当前的状态,但我认为我已经离开了更接近工作的东西,但这就是我现在所拥有的。
JS(1)
$('.quiz-block-question').each(function() {
var id = $(this).data('group-id');
var score = $(this).data('group-score');
var i = 0;
$("[data-group-id='" + id + "']").each(function(index) {
if(++i > 2) {
return false;
}
//$(this).find('.group-id').text(id);
//console.log("group: " + $(this).data('group-id'));
//$(this).find('.group-score').text(score);
//console.log("group score: " + $(this).data('group-score'));
var first = $(this).data('group-score')[1];
console.log(first);
var second = $(this).data('group-score')[2];
var total = first + second;
$('.results').append("total:" + total);
});
//return false
});
JS(2)
$('.quiz-block-question').each(function(i) {
var groupID = $(this).data("group-id");
if ($(this).data('group-id') == i + 1) {
//console.log(this);
$("[data-group-id='"+i+"']").each(function() {
console.log(this);
var questionGroupID = $(this).data('group-id');
$(this).each(function() {
console.log("group score: "+$(this).attr('data-group-score'));
});
});
}
});
答案 0 :(得分:1)
听起来你只想进行.map/reduce
操作。这将返回一个对象/值对为id / total。
var q = document.querySelectorAll('.quiz-block-question');
var res = Array.from(q, el =>
({id: el.dataset.groupId, score: +el.dataset.groupScore})
).reduce((obj, d) =>
Object.assign(obj, {[d.id]: (obj[d.id] || 0) + d.score})
, {});
console.log(res);
<div class="quiz-block-container">
<div class="quiz-block-question" data-group-id="1" data-group-score="2">
</div>
<div class="quiz-block-question" data-group-id="1" data-group-score="3">
</div>
<div class="quiz-block-question" data-group-id="2" data-group-score="1">
</div>
<div class="quiz-block-question" data-group-id="2" data-group-score="3">
</div>
<div class="quiz-block-question" data-group-id="3" data-group-score="3">
</div>
<div class="quiz-block-question" data-group-id="3" data-group-score="1">
</div>
<div class="quiz-block-question" data-group-id="4" data-group-score="1">
</div>
<div class="quiz-block-question" data-group-id="4" data-group-score="1">
</div>
</div>