jQuery实现输入文字超过规定行数时自动添加省略号

php中世界最好的语言 原创: 2018-05-03 09:59:31 1207浏览

这次给大家带来jQuery实现输入文字超过规定行数时自动添加省略号，jQuery实现输入文字超过规定行数时自动添加省略号的注意事项有哪些，下面就是实战案例，一起来看一下。

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>jQuery自动添加省略号</title>
  <script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
  <script type="text/javascript">
    $(function () {
      $(".figcaption").each(function (i) {
        var pH = $(this).height();
        var $p = $("p", $(this)).eq(0);
        while ($p.outerHeight() > pH) {
          $p.text($p.text().replace(/(\s)*([a-zA-Z0-9]+|\W)(\.\.\.)?$/, "..."));
        };
      });
    });
  </script>
  <style>
    *{
      padding: 0px;
      margin: 0px;
    }
    .figcaption{
      width: 300px;
      height: 50px;
      /*根据父元素的高度来添加省略号
      *可以任意设置显示的行数
      */
      border: 1px solid red;
    }
  </style>
</head>
<body>
  <p class="figcaption">
    <p>
      You probably can't do it (currently?) without a fixed-width font like Courier. With
      a fixed-width font every letter occupies the same horizontal space, so you could
      probably count the letters and multiply the result with the current font size in
      ems or exs. Then you would just have to test how many letters fit on one line, and
      then break it up.</p>
  </p>
</body>
<script>
</script>
</html>

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jQuery实现输入文字超过规定行数时自动添加省略号

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