Bootstrap4 按钮
Bootstrap 4 提供了不同样式的按钮。
<button type="button" class="btn">基本按钮</button> <button type="button" class="btnbtn-primary">主要按钮</button> <button type="button" class="btn btn-secondary">次要按钮</button> <button type="button" class="btn btn-success">成功</button> <button type="button" class="btn btn-info">信息</button> <button type="button" class="btn btn-warning">警告</button> <button type="button" class="btn btn-danger">危险</button> <button type="button" class="btn btn-dark">黑色</button> <button type="button" class="btn btn-light">浅色</button> <button type="button" class="btn btn-link">链接</button>
效果:
按钮类可用于 <a>, <button>, 或 <input> 元素上:
<a href="#" class="btn btn-info" role="button">链接按钮</a> <button type="button" class="btn btn-info">按钮</button> <input type="button" class="btn btn-info" value="输入框按钮"> <input type="submit" class="btn btn-info" value="提交按钮">
效果:
按钮设置边框
< button type =" button " class =" btn btn-outline-primary "> 主要按钮 </ button >
< button type =" button " class =" btn btn-outline-secondary "> 次要按钮 </ button >
< button type =" button " class =" btn btn-outline-success "> 成功 </ button >
< button type =" button " class =" btn btn-outline-info "> 信息 </ button >
< button type =" button " class =" btn btn-outline-warning "> 警告 </ button >
< button type =" button " class =" btn btn-outline-danger "> 危险 </ button >
< button type =" button " class =" btn btn-outline-dark "> 黑色 </ button >
< button type =" button " class =" btn btn-outline-light text-dark "> 浅色 </ button >
效果:
不同大小的按钮
Bootstrap 4 可以设置按钮的大小:
< button type =" button " class =" btn btn-primary btn-lg "> 大号按钮 </ button >
< button type =" button " class =" btn btn-primary "> 默认按钮 </ button >
< button type =" button " class =" btn btn-primary btn-sm "> 小号按钮 </ button >
效果:
块级按钮
通过添加 .btn-block 类可以设置块级按钮:
< button type =" button " class =" btn btn-primary btn-block "> 按钮 1 </ button >
效果:
激活和禁用的按钮
按钮可设置为激活或者禁止点击的状态。
.active 类可以设置按钮是可用的, disabled 属性可以设置按钮是不可点击的。 注意 <a> 元素不支持 disabled 属性,你可以通过添加 .disabled 类来禁止链接的点击。
< button type =" button " class =" btn btn-primary active "> 点击后的按钮 </ button >
< button type =" button " class =" btn btn-primary " disabled > 禁止点击的按钮 </ button >
< a href =" # " class =" btn btn-primary disabled "> 禁止点击的链接 </ a >
效果: