如何使用JavaScript设置列宽和列数？
要在单个声明中设置列宽和列数，请使用JavaScriptcolumns属性。
示例
您可以尝试运行以下代码以使用JavaScript设置列宽和列数-
<!DOCTYPE html>
<html>
<head>
<style>
#myID {
column-count: 4;
column-rule: 4px solid yellow;
}
</style>
</head>
<body>
<p>Click below to change the column count to 2 and minimum size</p>
<button onclick="display()">Change Column count and set size</button>
<div id="myID">
This is demo text. This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text. This is demo text.
</div>
<script>
function display() {
document.getElementById("myID").style.columns = "70px 2";
}
</script>
</body>
</html>