html - 创建动态网格时防止 div 增长/拉伸

Question

我正在处理动态图像网格，我无法让网格留在容器中。这个想法相当简单，使用 jQuery 向容器中添加我喜欢的任意数量的框，并在添加它们时缩小它们以适应容器，而无需添加滚动条或离开屏幕。这适用于添加列，但是在添加行时，它只会一直在屏幕底部运行。

如何修复容器 div，以便在添加行时缩小图像而不是添加带有滚动条的行？

function GenerateGrid(rows, cols) {

  // Get the available space of the container.
  var gridContainerH = $('#container').height();
  var gridContainerW = $('#container').width();

  // Adjust the image size to fit in the available space.
  var imageWidth = gridContainerW / cols;
  var imageHeight = gridContainerH / rows;

  const container = document.getElementById("container");
  var img = document.createElement("img");
  img.src = "panel.jpg";

  container.style.setProperty('--grid-rows', rows);
  container.style.setProperty('--grid-cols', cols);
  for (i = 0; i < (rows * cols); i++) {
    let cell = document.createElement("div");
    cell.innerHTML = '<img src=box.jpg width=' + imageWidth + ' height=' + imageHeight + '>';
    container.appendChild(cell).className = "grid-item";
  };

  // Recalculate height
  var panelHeight = imageWidth * rows;
  $('#container').height(panelHeight);
  $('#gridContainer').height(panelHeight);

};

// Start with a 5x7 grid
$(window).on("load", function() {
  GenerateGrid(5, 7);
})

// If the column amount changes, rebuild the grid.
$('#columns').change(function() {
  var columns = $("#columns").val();
  var rows = $("#rows").val();
  $('#container').empty();
  GenerateGrid(rows, columns);
});

// If the row amount changes, rebuild the grid.
$('#rows').change(function() {
  var columns = $("#columns").val();
  var rows = $("#rows").val();
  $('#container').empty();
  GenerateGrid(rows, columns);
});

:root {
  --grid-cols: 1;
  --grid-rows: 1;
}

#container {
  display: grid;
  grid-gap: 0em;
  grid-template-rows: repeat(var(--grid-rows), 0fr);
  grid-template-columns: repeat(var(--grid-cols), 0fr);
}

#gridContainer {
  width: 768px;
  height: 600px;
  max-height: 600px;
}

#staticContainer {
  width: 768px;
  height: 600px;
  max-height: 600px;
}

.grid-item {
  padding: 0em;
  text-align: center;
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="container-fluid">
  <div class="row">
    <div class="col-lg-2">
      <form>
        <label for="columns">Columns</label>
        <input type="number" id="columns" name="columns" value="7">
        <label for="rows">Rows</label>
        <input type="number" id="rows" name="rows" value="5">
      </form>

    </div>
    <div class="col-lg-10">

      <div class="container" id="gridContainer">
        <div class="row">
          <div class="col-lg-8  text-center">
            Horizontal label
          </div>
        </div>
        <div class="row h-100">
          <div class="col-lg-1 my-auto">
            Vertical label
          </div>
          <div class="col-lg-7 staticContainer">
            <div id="container"></div>
          </div>
          <div class="col-lg-4 mt-auto">
            Right Side
          </div>
        </div>
      </div>
    </div>
  </div>
</div>

为不会超出定义的宽度和高度的网格创建一个 Div 容器涉及什么？

编辑：请以图片为例。

5x7 网格 9x10 1x1

Answer 1

避免评论中的链接：。这是你想做的吗？：

（结构修改+bs4类添加）

function GenerateGrid(rows, cols) {

  // Get the available space of the container.
  var gridContainerH = $('#container').height();
  var gridContainerW = $('#container').width();

  // Adjust the image size to fit in the available space.
  var imageWidth = gridContainerW / cols;
  var imageHeight = gridContainerH / rows;

  const container = document.getElementById("container");
  var img = document.createElement("img");
  img.src = "panel.jpg";

  container.style.setProperty('--grid-rows', rows);
  container.style.setProperty('--grid-cols', cols);
  for (i = 0; i < (rows * cols); i++) {
    let cell = document.createElement("div");
    cell.innerHTML = '<img src=box.jpg width=' + imageWidth + ' height=' + imageHeight + '>';
    container.appendChild(cell).className = "grid-item";
  };

  // Recalculate height
  var panelHeight = imageWidth * rows;
  $('#container').height(panelHeight);
  $('#gridContainer').height(panelHeight);

};

// Start with a 5x7 grid
$(window).on("load", function() {
  GenerateGrid(5, 7);
})

// If the column amount changes, rebuild the grid.
$('#columns').change(function() {
  var columns = $("#columns").val();
  var rows = $("#rows").val();
  $('#container').empty();
  GenerateGrid(rows, columns);
});

// If the row amount changes, rebuild the grid.
$('#rows').change(function() {
  var columns = $("#columns").val();
  var rows = $("#rows").val();
  $('#container').empty();
  GenerateGrid(rows, columns);
});

:root {
  --grid-cols: 1;
  --grid-rows: 1;
}

#container {
  flex:1;
  display: grid;
  grid-gap: 0em;
  grid-template-rows: repeat(var(--grid-rows), 0fr);
  grid-template-columns: repeat(var(--grid-cols), 0fr);
}


#staticContainer {/* width sizing ? while col-lg-7 ? 
Added to parent  flex-shrink-0 flex-wrap classes but unsure of what you really want */ 
  width: 768px;
  height: 600px;
  text-align:center;
}

.grid-item {
  padding: 0em;
  text-align: center;
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="container-fluid">
  <div class="row">
    <div class="col-lg-2">
      <form>
        <label for="columns">Columns</label>
        <input type="number" id="columns" name="columns" value="7">
        <label for="rows">Rows</label>
        <input type="number" id="rows" name="rows" value="5">
      </form>

    </div>
    <div   class="col-lg-10 d-flex align-items-center flex-shrink-0 flex-wrap">
      <div class="col-lg-1">Vertical label</div>

      <div class="col-lg-7 d-flex flex-column" id="staticContainer">
        <div>Horizontal label</div>
        <div id="container"></div>
      </div>
      <div class="col-lg-4">
        Right Side
      </div>
    </div>
  </div>
</div>

使用具有断点和固定大小的类，否则会使预期的渲染变得非常混乱......你能澄清预期的大小和行为吗？

---

对象适合也是一个提示吗？

function GenerateGrid(rows, cols) {

  // Get the available space of the container.
  var gridContainerH = $('#container').height();
  var gridContainerW = $('#container').width();

  // Adjust the image size to fit in the available space.
  var imageWidth = gridContainerW / cols;
  var imageHeight = gridContainerH / rows;

  const container = document.getElementById("container");
  var img = document.createElement("img");
  img.src = "http://dummyimage.com/100x200&text=panel.jpg";

  container.style.setProperty('--grid-rows', rows);
  container.style.setProperty('--grid-cols', cols);
  for (i = 0; i < (rows * cols); i++) {
    let cell = document.createElement("div");
    cell.innerHTML = '<img src="http://dummyimage.com/100x200&text=box.jpg" width=' + imageWidth + ' height=' + imageHeight + '>';
    container.appendChild(cell).className = "grid-item";
  };

  // Recalculate height
  var panelHeight = imageWidth * rows;
  $('#container').height(panelHeight);
  $('#gridContainer').height(panelHeight);

};

// Start with a 5x7 grid
$(window).on("load", function() {
  GenerateGrid(5, 7);
})

// If the column amount changes, rebuild the grid.
$('#columns').change(function() {
  var columns = $("#columns").val();
  var rows = $("#rows").val();
  $('#container').empty();
  GenerateGrid(rows, columns);
});

// If the row amount changes, rebuild the grid.
$('#rows').change(function() {
  var columns = $("#columns").val();
  var rows = $("#rows").val();
  $('#container').empty();
  GenerateGrid(rows, columns);
});

:root {
  --grid-cols: 1;
  --grid-rows: 1;
}

#container {
  flex:1;
  display: grid;
  grid-gap: 0em;
  grid-template-rows: repeat(var(--grid-rows), 0fr);
  grid-template-columns: repeat(var(--grid-cols), 0fr);
}


#staticContainer {/* width sizing ? while col-lg-7 ? 
Added to parent  flex-shrink-0 flex-wrap classes but unsure of what you really want */ 
  width: 768px;
  height: 600px;
  text-align:center;
}

.grid-item {
  padding: 0em;
  text-align: center;
}
.grid-item img {object-fit:cover;display:block}

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="container-fluid">
  <div class="row">
    <div class="col-lg-2">
      <form>
        <label for="columns">Columns</label>
        <input type="number" id="columns" name="columns" value="7">
        <label for="rows">Rows</label>
        <input type="number" id="rows" name="rows" value="5">
      </form>

    </div>
    <div   class="col-lg-10 d-flex align-items-center flex-shrink-0 flex-wrap">
      <div class="col-lg-1">Vertical label</div>

      <div class="col-lg-7 d-flex flex-column" id="staticContainer">
        <div>Horizontal label</div>
        <div id="container"></div>
      </div>
      <div class="col-lg-4">
        Right Side
      </div>
    </div>
  </div>
</div>