我想使用bootstrap网格创建一个页面，当大的时候有4列，中等时有3列，小时有2列，超小时有1列。并且顶部的按钮，单击大按钮时将分辨率更改为大，中等按钮单击时将分辨率更改为中小按钮，单击时将分辨率更改为小。怎么做。请帮忙。
<html>
<head>
<title> Grid</title>
<link rel="stylesheet" href ="bootstrap/css/bootstrap.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src = "bootstrap/js/bootstrap.js"></script>
</head>
<body>
<div class="container" style="background-color:lavender;">
<h1 style="text-align:center;color:brown">Lorem Ipsum Grid</h1>
<br><br>
<div class="row">
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p>
// text
</p>
</div>
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p> // text
</p>
</div>
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p>
// text
</p>
</div>
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p>
// text
</p>
</div>
</div>
<br><br>
<div class="row">
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p>
// text
</p>
</div>
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p>
// text
</p>
</div>
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p>
// text
</p>
</div>
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p>
// text </p>
</div>
</div>
<br><br>
<div class="row">
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p>
// text
</p>
</div>
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p>
// text
</p>
</div>
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p>
// text
</p>
</div>
<div class="col-lg-3 col-md-4 col-sm-2 col-xs-1">
<p>
// text
</p>
</div>
</div>
</div>
</body>
</html>
答案 0 :(得分：0)
使用jQuery可能吗？希望这是你改变列的意思。希望它可以帮到你。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>Bootstrap 101 Template</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</head>
<body>
<div class="container" style="background-color:lavender;">
<h1 style="text-align:center;color:brown">Lorem Ipsum Grid</h1>
<button type="button" id="btn-small" class="btn btn-success ">Small size</button>
<button type="button" id="btn-medium" class="btn btn-success ">Medium size</button>
<button type="button" id="btn-large" class="btn btn-success ">Large size</button>
<br><br>
<div class="row">
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p>
// text
</p>
</div>
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p> // text
</p>
</div>
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p>
// text
</p>
</div>
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p>
// text
</p>
</div>
</div>
<br><br>
<div class="row">
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p>
// text
</p>
</div>
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p>
// text
</p>
</div>
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p>
// text
</p>
</div>
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p>
// text </p>
</div>
</div>
<br><br>
<div class="row">
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p>
// text
</p>
</div>
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p>
// text
</p>
</div>
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p>
// text
</p>
</div>
<div class="col-change col-lg-3 col-md-4 col-sm-6 col-xs-12">
<p>
// text
</p>
</div>
</div>
</div>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script>
$('#btn-small').click(function(){
console.log('click');
$('.row .col-change').each(function(){
$(this).attr("class", "col-change col-xs-12 col-lg-12");
});
});
$('#btn-medium').click(function(){
console.log('click');
$('.row .col-change').each(function(){
$(this).attr("class", "col-change col-xs-4 col-lg-4");
});
});
$('#btn-large').click(function(){
console.log('click');
$('.row .col-change').each(function(){
$(this).attr("class", "col-change col-xs-3 col-lg-3");
});
});
</script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
</body>
</html>