Bootstrap表单Form全面解析

<form>
 <div class="form-group">
  <label for="exampleInputEmail1">Email address</label>
  <input type="email" class="form-control" id="exampleInputEmail1" placeholder="Email">
 </div>
 <div class="form-group">
  <label for="exampleInputPassword1">Password</label>
  <input type="password" class="form-control" id="exampleInputPassword1" placeholder="Password">
 </div>
 <div class="form-group">
  <label for="exampleInputFile">File input</label>
  <input type="file" id="exampleInputFile">
  <p class="help-block">Example block-level help text here.</p>
 </div>
 <div class="checkbox">
  <label>
   <input type="checkbox"> Check me out
  </label>
 </div>
 <button type="submit" class="btn btn-default">Submit</button>
</form>

<form class="form-inline">
 <div class="form-group">
  <label class="sr-only" for="exampleInputEmail3">Email address</label>
  <input type="email" class="form-control" id="exampleInputEmail3" placeholder="Email">
 </div>
 <div class="form-group">
  <label class="sr-only" for="exampleInputPassword3">Password</label>
  <input type="password" class="form-control" id="exampleInputPassword3" placeholder="Password">
 </div>
 <div class="checkbox">
  <label>
   <input type="checkbox"> Remember me
  </label>
 </div>
 <button type="submit" class="btn btn-default">Sign in</button>
</form>

form class="form-horizontal">
 <div class="form-group">
  <label for="inputEmail3" class="col-sm-2 control-label">Email</label>
  <div class="col-sm-10">
   <input type="email" class="form-control" id="inputEmail3" placeholder="Email">
  </div>
 </div>
 <div class="form-group">
  <label for="inputPassword3" class="col-sm-2 control-label">Password</label>
  <div class="col-sm-10">
   <input type="password" class="form-control" id="inputPassword3" placeholder="Password">
  </div>
 </div>
 <div class="form-group">
  <div class="col-sm-offset-2 col-sm-10">
   <div class="checkbox">
    <label>
     <input type="checkbox"> Remember me
    </label>
   </div>
  </div>
 </div>
 <div class="form-group">
  <div class="col-sm-offset-2 col-sm-10">
   <button type="submit" class="btn btn-default">Sign in</button>
  </div>
 </div>
</form>