当网格底部有空格时,Bootstrap + Masonry会添加空白div

Question

我正在使用砌体+自举,并注意到当我有一个3列网格然后我有10个项目时,它会显示一个3x4网格,底部有2个空格.我怎么能在底部自动添加2个空div来填充它而没有那些空格？所以总div将变为12,其中2个div只是空白？

这不应该被固定到3列,但是每当它检测到有N个空div可以被填满时应该动态地添加空div.应适用于加载和调整大小.

.item尺寸没有问题,因为它们都具有相同的宽度和高度(方框/方形)

我做了一个jsFiddle,现在可以在最后一行的空白处添加填充符.这也是通过使用layoutComplete事件来处理调整大小.但问题是,每当我调整大小时,它都会不断添加新的填充物.

尝试重新调整大小,你会注意到它不断添加填充物.

在这种情况下,这里也是代码.

HTML

<input type="hidden" name="hfTotalGridItems" id="hfTotalGridItems" value="10" />
<div class="grid">
    <div class="item">
        <div>lorem</div>
    </div>
    <div class="item">
        <div>lorem</div>
    </div>
    <div class="item">
        <div>lorem</div>
    </div>
    <div class="item">
        <div>lorem</div>
    </div>
    <div class="item">
        <div>lorem</div>
    </div>
    <div class="item">
        <div>lorem</div>
    </div>
    <div class="item">
        <div>lorem</div>
    </div>
    <div class="item">
        <div>lorem</div>
    </div>
    <div class="item">
        <div>lorem</div>
    </div>
    <div class="item">
        <div>lorem</div>
    </div>
</div>
<div class="result"></div>

CSS

.grid {
    margin: 0 auto;
}
.item {
    margin-bottom: 20px;
    border: 1px solid red;
    height: 80px;
    width: 80px;        
}
.filler {
    background-color: #999;
    border: 1px solid blue;
}

JQuery的

$(function () {
    function calculateRows() {
        var lisInRow = 0;
        var $item = $('.grid .item');
        var $grid = $('.grid');
        var itemWidth = $('.grid .item').width();
        var itemHeight = $('.grid .item').height();

        $item.each(function () {
            if ($(this).prev().length > 0) {
                if ($(this).position().top != $(this).prev().position().top) return false;
                lisInRow++;
            } else {
                lisInRow++;
            }
        });

        var lisInLastRow = $item.length % lisInRow;
        if (lisInLastRow == 0) lisInLastRow = lisInRow;

        $('.result').html('No: of lis in a row = ' + lisInRow + '<br>' + 'No: of lis in last row = ' + lisInLastRow);

        if (lisInLastRow < lisInRow) {
            var $clonedItem = $('.grid .item:last-child').clone().empty().css({
                width: itemWidth,
                height: itemHeight
            }).addClass('filler');
            $grid.append($clonedItem).masonry('appended', $clonedItem);

        } else {
            if (newTotal > $('#hfTotalGridItems').val()) {
                $grid.masonry('remove', $('.grid .item.filler'));
                $grid.masonry();
            }
        }
    }

    var $grid = $('.grid');

    $grid.masonry({
        itemSelector: '.item',
        isFitWidth: true,
        gutter: 20
    });

    $grid.masonry('on', 'layoutComplete', function (event) {
        calculateRows(event.length);
    });

    $grid.masonry();
});

Answer 1

您需要检查两件事

1. 如果原始框的数量可以被第一行中的框数整除(originalBoxs % lisInRow === 0).

2. 如果框的数量大于允许的最大框数.您可以计算允许的最大框,如下所示

   var totalAllowed = lisInRow;
   while (totalAllowed < originalBoxs) {
      totalAllowed += lisInRow;
   }
   

如果这是真的,那么你应该删除所有多余的框.否则添加填充框.这是一个更新的jsFiddle

我在下面添加了更新的jQuery代码

$(function () {

    // remember the original box lenth. 
    var $item = $('.grid .item');
    var originalBoxs = $item.length;

    function calculateRows() {

        var lisInRow = 0;
        var $item = $('.grid .item');
        var $grid = $('.grid');
        var itemWidth = $('.grid .item').width();
        var itemHeight = $('.grid .item').height();

        // calculate how many boxes are in the first row. 
        $item.each(function () {
            if ($(this).prev().length > 0) {
                if ($(this).position().top != $(this).prev().position().top) return false;
                lisInRow++;
            } else {
                lisInRow++;
            }
        });

        // calculate how many boxes are in the last row. 
        var lisInLastRow = $item.length % lisInRow;

        $('.result').html('No: of lis in a row = ' + lisInRow + '<br>' + 'No: of lis in last row = ' + lisInLastRow);

        // the total allowed boxes on the page. 
        var totalAllowed = lisInRow;
        while (totalAllowed < originalBoxs) {
            totalAllowed += lisInRow;
        }

        if (($item.length > originalBoxs && originalBoxs % lisInRow === 0) || ($item.length > totalAllowed)) {
            // if the number of original boxes evenly divides into the number of boxes in a row.
            // or the number of boxes on the page is past the max allowed. 
            // remove any filler boxes. 
            var boxesToDelete = $('.grid .item.filler');
            var deleteBoxes = $item.length - totalAllowed;
            for (var i = 0; i < deleteBoxes; i++) {
                // delete unnesecary boxes. 
                $grid.masonry('remove', boxesToDelete[boxesToDelete.length - i - 1]);
            }
        } else if (lisInLastRow !== 0) {
            // if the last row does not equal 0 and the number of boxes is less then the original + the first row
            // then fill it in with new boxes. 
            var $clonedItem = $('.grid .item:last-child').clone().empty().css({
                width: itemWidth,
                height: itemHeight
            }).addClass('filler');
            $grid.append($clonedItem).masonry('appended', $clonedItem);    
        }

    }

    var $grid = $('.grid');

    $grid.masonry({
        itemSelector: '.item',
        isFitWidth: true,
        gutter: 20
    });

    $grid.masonry('on', 'layoutComplete', function (event) {
        calculateRows(event.length);
    });

    $grid.masonry();
});