How to Create: Extended Grid

Learn how to use CSS and JavaScript to create an expandable grid.

Create an extended grid

Step 1 - Add HTML:

<!-- 网格：三列 -->
<div class="row">
  <div class="column" onclick="openTab('b1');" style="background:green;">Box 1</div>
  <div class="column" onclick="openTab('b2');" style="background:blue;">Box 2</div>
  <div class="column" onclick="openTab('b3');" style="background:red;">Box 3</div>
</div>
<!-- 扩展网格（默认隐藏） -->
<div id="b1" class="containerTab" style="display:none;background:green">
  <!-- 如果您想关闭容器，请添加一个关闭按钮 -->
  <span onclick="this.parentElement.style.display='none'" class="closebtn">x</span>
  <h2>Box 1</h2>
  <p>Lorem ipsum..</p>
</div>
<div id="b2" class="containerTab" style="display:none;background:blue">
  <span onclick="this.parentElement.style.display='none'" class="closebtn">x</span>
  <h2>Box 2</h2>
  <p>Lorem ipsum..</p>
</div>
<div id="b3" class="containerTab" style="display:none;background:red">
  <span onclick="this.parentElement.style.display='none'" class="closebtn">x</span>
  <h2>Box 3</h2>
  <p>Lorem ipsum..</p>
</div>

Step 2 - Add CSS:

Create three columns:

/* Grid: three equal-width columns, floated next to each other */
.column {
  float: left;
  width: 33.33%;
  padding: 50px;
  text-align: center;
  font-size: 25px;
  cursor: pointer;
  color: white;
}
.containerTab {
  padding: 20px;
  color: white;
}
/* Clear float after columns */
.row:after {
  content: "";
  display: table;
  clear: both;
}
/* Closeable button within the image */
.closebtn {
  float: right;
  color: white;
  font-size: 35px;
  cursor: pointer;
}

Step 3 - Add JavaScript:

// Hide all elements with class="containerTab" except the ones matching the clickable grid column
function openTab(tabName) {
  var i, x;
  x = document.getElementsByClassName("containerTab");
  for (i = 0; i < x.length; i++) {
    x[i].style.display = "none";
  }
  document.getElementById(tabName).style.display = "block";
}

Try It Yourself