与字体图标一起使用

<input name="foo" type="text" placeholder="&#61447;">

OR

<input id="foo" type="text" />

#foo::before
{
  font-family: 'FontAwesome';
  color:red;
  position: relative;
  left: -5px;
  content: "\f007";    
}

你可以试试这个:Bootstrap-4 Beta https://www.codeply.com/go/W25zyByhec

<div class="container">
            <form>
                <div class="row">
                    <div class="input-group mb-3 col-sm-6">
                      <input type="text" class="form-control border-right-0" placeholder="Username" aria-label="Username" aria-describedby="basic-addon1">
                        <div class="input-group-prepend bg-white">
                            <span class="input-group-text border-left-0 rounded-right bg-white" id="basic-addon1"><i class="fas fa-search"></i></span>
                        </div>
                    </div>
                </div>
            </form>
        </div>

你可以试试这个:

input[type='text'] {
    background-image: url(images/comment-author.gif);
    background-position: 7px 7px;
    background-repeat: no-repeat;
}

我不想改变我的输入文本的背景，也不会与我的SVG图标工作。

我所做的就是为图标添加负边距，这样它就会出现在输入框中

并在输入中添加相同的填充值，这样文本就不会出现在图标下面。

<div class="search-input-container">

  <input
    type="text"
    class="search-input"
    style="padding-right : 30px;"
  />

  <img 
    src="@/assets/search-icon.svg" 
    style="margin-left: -30px;"
   />

</div>

*内联风格是为了可读性考虑使用类

.input_container { display: flex; border-bottom: solid 1px grey; transition: border-color 0.1s ease-in; background: white; } .input { color: blue; display: block; width: calc(100% - 20px); border: none; outline: none; padding: 8px 16px; } .input_img { flex-basis: 20px; display: inline-block; padding: 8px 16px; cursor: pointer; } <div class="input_container"> <input type="text" class="input" value> <span class="input_img" data-role="toggle"> <svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" > <path d="M8 9C7.44772 9 7 9.44771 7 10C7 10.5523 7.44772 11 8 11H16C16.5523 11 17 10.5523 17 10C17 9.44771 16.5523 9 16 9H8Z" fill="currentColor" /> <path fill-rule="evenodd" clip-rule="evenodd" d="M6 3C4.34315 3 3 4.34315 3 6V18C3 19.6569 4.34315 21 6 21H18C19.6569 21 21 19.6569 21 18V6C21 4.34315 19.6569 3 18 3H6ZM5 18V7H19V18C19 18.5523 18.5523 19 18 19H6C5.44772 19 5 18.5523 5 18Z" fill="currentColor" /> </svg> </span> </div>

 <label for="fileEdit">
    <i class="fa fa-cloud-upload">
    </i>
    <input id="fileEdit" class="hidden" type="file" name="addImg" ng-file-change="onImageChange( $files )" ng-multiple="false" accept="{{ contentType }}"/>
  </label>

例如，你可以使用这个:标签隐藏输入(图标显示)。