Chapter 4: BootStrap forms and images_javascript skills

Bootstrap, from Twitter, is currently the most popular front-end framework. Bootstrap is based on HTML, CSS, and JAVASCRIPT. It is simple and flexible, making web development faster.

Learning points:

1. Form
2. Pictures

In this lesson, we will mainly learn about Bootstrap form and image functions, and display various rich effects through built-in CSS definitions.

1. Form

Bootstrap provides some rich form styles for developers to use.

1. Basic format

//实现基本的表单样式
<form>
　　<div class="form-group">
　　　　<label>电子邮件</label>
　　　　<input type="email" class="form-control" placeholder="请输入您的电子邮件">
　　</div>
　　<div class="form-group">
　　　　<label>密码</label>
　　　　<input type="password" class="form-control" placeholder="请输入您的密码">
　　</div>
</form> 

Note: Only when the type of the input box is set correctly can it be given the correct style. Supported input box controls include: text, password, datetime, datetime-local, date, month, time, week, number, email, url, search, tel and color.

2. Inline form

//让表单左对齐浮动，并表现为 inline-block 内联块结构
<form class="form-inline"> 

Note: When it is less than 768px, the exclusive style will be restored

3. Form combination

//前后增加片段
<div class="input-group">
　　<div class="input-group-addon">￥</div>
　　<input type="text" class="form-control">
　　<div class="input-group-addon">.00</div>
</div> 

4. Horizontal arrangement

//让表单内的元素保持水平排列
<form class="form-horizontal">
<div class="form-group">
<label class="col-sm-2 control-label">电子邮件</label>
<div class="col-sm-10">
<input type="email" class="form-control" placeholder="请输入您的电子邮件">
</div>
</div>
</form>

Note: The col-sm grid system is used here, which will be explained in the following chapters, and control-label means synchronization with the parent element style.

5. Check boxes and radio buttons

//设置复选框，在一行
<div class="checkbox">
<label> <input type="checkbox">体育
</label>
</div>
<div class="checkbox">
<label> <input type="checkbox">音乐
</label>
</div> 
//设置禁用的复选框
<div class="checkbox disabled">
<label> <input type="checkbox" disabled>音乐
</label>
</div> 
//设置内联一行显示的复选框
<label class="checkbox-inline"> <input type="checkbox">体育</label>
<label class="checkbox-inline disabled"> <input type="checkbox" disabled>音乐</label> 
//设置单选框
<div class="radio disabled">
<label> <input type="radio" name="sex" disabled>男</label>
</div> 

6. Drop-down list

//设置下拉列表
<select class="form-control">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select> 

7. Verification status

//设置为错误状态
<div class="form-group has-error"> 

Note: There are other statuses as follows:

　　样式说明
　　has-error错误状态
　　has-success成功状态
　　has-warning警告状态
//label 标签同步相应状态
<label class="control-label">Input with success</label> 

8. Add additional icons

//文本框右侧内置文本图标
<div class="form-group has-feedback">
<label>电子邮件</label>
<input type="email" class="form-control">
<span class="glyphicon glyphicon-ok form-control-feedback"></span>
</div> 

Note: In addition to glyphicon-ok, there are several others in the following table:

　样式说明
　　glyphicon-ok成功状态
　　glyphicon-warning-sign警告状态
　　glyphicon-remove错误状态

9. Control size

//从大到小
<input type="password" class="form-control input-lg">
<input type="password" class="form-control">
<input type="password" class="form-control input-sm"> 

Note: You can also set the parent elements form-group-lg and form-group-sm to adjust.

2. Picture

Bootstrap provides some rich image styles for developers to use.

1. Picture shape

//三种形状
<img src="img/pic.png" alt="图片" class="img-rounded">
<img src="img/pic.png" alt="图片" class="img-circle">
<img src="img/pic.png" alt="图片" class="img-thumbnail"> 
//响应式图片
<img src="img/pic.png" alt="图片" class="img-responsive">

The above is the relevant content of Bootstrap forms and pictures introduced by the editor to you. I hope it will be helpful to you!