placeholder

CSS ::placeholder Pseudo Element

The ::placeholder pseudo-class is used to style the placeholder text of a form element. The ::placeholder pseudo-element selects <form> elements with placeholder text in an <input> field. By default, the appearance of placeholder text is a semi-transparent or light gray color in most browsers.

The placeholder text is set with the placeholder attribute, which specifies a hint that describes the expected value of an input field.

For maximum browser compatibility, the ::placeholder selector works with the -webkit-, -moz-, -ms- prefixes.

Version

Version

Selectors Level 4

Syntax

Syntax

::placeholder {
  css declarations;
}

Example of the ::placeholder selector:

<!DOCTYPE html>
<html>
  <head>
    <title>Title of the document</title>
    <style>
      input::placeholder {
        color: #1c87c9;
        font-size: 1.2em;
        font-style: italic;
      }
    </style>
  </head>
  <body>
    <h2>::placeholder selector example</h2>
    <input placeholder="Type here...">
  </body>
</html>

Example of the ::placeholder selector used in form:

<!DOCTYPE html>
<html>
  <head>
    <title>Title of the document</title>
    <style>
      * {
        box-sizing: border-box;
      }
      .container {
        margin: 20px auto;
        max-width: 250px;
        background-color: #8ebf42;
        padding: 20px;
      }
      input {
        border: 1px solid #666666;
        background-color: #eeeeee;
        padding: 15px;
        margin-bottom: 20px;
        display: block;
        width: 100%;
      }
      input::-webkit-input-placeholder {
        color: #666666;
      }
      input::-moz-placeholder {
        color: #666666;
      }
      input:-ms-input-placeholder {
        color: #666666;
      }
      input::placeholder {
        color: #666666;
      }
    </style>
  </head>
  <body>
    <h2>::placeholder selector example</h2>
    <div class="container">
      <form>
        <input type="text" placeholder="Lorem ipsum is simply...">
        <input type="date" placeholder="DD/MM/YYYY">
      </form>
    </div>
  </body>
</html>

Example of the ::placeholder selector with the HTML <input> autofocus attribute:

<!DOCTYPE html>
<html>
  <head>
    <title>Title of the document</title>
    <style>
      label {
        display: block;
        color: #777777;
        margin: 0 0 4px;
      }
      input {
        border: 1px solid transparent;
        padding: 15px;
        font-size: 1.2em;
        outline: 0;
      }
      input::placeholder {
        color: #8ebf42;
      }
      label,
      input {
        font-family: sans-serif;
      }
    </style>
  </head>
  <body>
    <h2>::placeholder selector example</h2>
    <form action="#">
      <div>
        <label for="name">Name:</label>
        <input id="name" name="name" type="text" placeholder="Enter your name here" autofocus>
      </div>
    </form>
  </body>
</html>


请遵守《互联网环境法规》文明发言,欢迎讨论问题
扫码反馈

扫一扫,反馈当前页面

咨询反馈
扫码关注
返回顶部