javascript - 每个 div 添加 2 个 json 对象

Question

我正在尝试为每个 div 添加两个不同的 JSON 项。我在遍历 json 之前清空 div，然后附加对象。

但我需要为每个 div 添加两个，并且每个项目都必须不同。例如。 div1有img1&img2，div2有img3&img4等

这是我得到的结果 -

                <div class="gallery-sub-slider">

                <div>
                    <img class="img1">
                    <img class="img2">
                    <img class="img3">
                    <img class="img4">
                    <img class="img5">
                </div>

                <div>
                    <img class="img1">
                    <img class="img2">
                    <img class="img3">
                    <img class="img4">
                    <img class="img5">
                </div>

            </div>

但这就是我需要的结果——

<div class="gallery-sub-slider">

                <div>
                    <img class="img1">
                    <img class="img2">
                </div>

                <div>
                    <img class="img3">
                    <img class="img4">
                </div>

                <div>
                    <img class="img5">
                    <img class="img6">
                </div>

            </div>

      $.each(data.carImages, function(i){
        counter++;
        imgLink = data.carImages[i].imgLink;
        console.log(counter);

        $('.gallery-slider').append('<div><img src="' + imgLink + '" class="gallery-img" data-tag="' + i + '"></div>');
        $('.gallery-sub-slider').append('<div class="sub-gallery-item" data-index="' + i + '"></div>');

        $('.gallery-sub-slider div').append('<img src="' + imgLink + '" class="sub-gallery-img" data-tag="1"><img src="' + imgLink + '" class="sub-gallery-img">');
        
      });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

Answer 1

与其遍历每个 data.carImage，不如考虑先计算所需的 div 数量:

var divCount = Math.ceil(data.carImages.length / 2)

然后遍历那些:

for (var i = 0; i < divCount; i++) {
    var firstImgIndex = i*2;
    var secondImgIndex = firstImgIndex + 1;

    var firstImg = data.carImages[firstImgIndex];
    var secondImg = data.carImages[secondImgIndex];

    // create your div now, with your first and second img, but you might have to check that secondImg !== null or undefined
}