工具提示文字在悬停时不显示

Question

这是一个简单的图库，我想在天数悬停时显示工具提示文字。在这种情况下，我想在1月1日悬停时显示新年文本。我从w3schools获取了工具提示代码。我有逻辑错误或句法吗？

＆＃13;

＆＃13;

d = {}
d['system1'] = {}
d['system1']['attr1'] = value_of_attr1

＆＃13;

table {
  border-collapse: collapse;
  border-spacing: 0;
}

thead {
  width: 300px !important;
}

td {
  padding: 0;
}

.container {
  font: 87.5%/1.5em 'Lato', sans-serif;
  left: 50%;
  background: #ccc;
  position: fixed;
  top: 50%;
  width: 300px;
  transform: translate(-50%, -50%);
}

.calendar-container {
  position: relative;
}

.calendar-container header {
  border-radius: 1em 1em 0 0;
  background: #e66b6b;
  color: #fff;
  text-align: center;
  width: 402px;
}

.newyear .tooltiptext {
  visibility: hidden;
  width: 120px;
  background-color: #555;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 5px 0;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  opacity: 0;
  transition: opacity 1s;
}

.newyear .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #555 transparent transparent transparent;
}

.newyear:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

.month {
  font-size: 3em;
  line-height: 1em;
  width: 300px;
  text-align: center;
  padding-bottom: 10px;
}

.calendar {
  background: #fff;
  border-radius: 0 0 1em 1em;
  -webkit-box-shadow: 0 2px 1px rgba(0, 0, 0, .2), 0 3px 1px #fff;
  box-shadow: 0 2px 1px rgba(0, 0, 0, .2), 0 3px 1px #fff;
  color: #555;
  display: inline-block;
  padding: 2px;
}

.calendar thead {
  color: #e66b6b;
  font-weight: 700;
  text-transform: uppercase;
}

.calendar td {
  padding: .5em 1em;
  text-align: center;
}

.calendar tbody td:hover {
  background: #cacaca;
}

.current-day {
  color: #e66b6b;
  background: #cacaca;
  font-weight: bolder;
}

.prev-month,
.next-month {
  color: #cacaca;
}

＆＃13;

＆＃13;

＆＃13;

View on Codepen

Answer 1

工具提示的包含元素需要定位，以便工具提示出现＆＃34;相对＆＃34;当悬停在它上面时，从包含元素（.newyear）。

这可以通过将position属性声明为绝对定位的嵌套元素（.newyear）的包含元素（.tooltiptext）来完成，例如：< / p>

.newyear {
  position: relative;
}

代码段示范：

＆＃13;

＆＃13;

table {
  border-collapse: collapse;
  border-spacing: 0;
}

thead {
  width: 300px !important;
}

td {
  padding: 0;
}

.container {
  font: 87.5%/1.5em 'Lato', sans-serif;
  left: 50%;
  background: #ccc;
  position: fixed;
  top: 50%;
  width: 300px;
  transform: translate(-50%, -50%);
}

.calendar-container {
  position: relative;
}

.calendar-container header {
  border-radius: 1em 1em 0 0;
  background: #e66b6b;
  color: #fff;
  text-align: center;
  width: 402px;
}

.newyear .tooltiptext {
  visibility: hidden;
  width: 120px;
  background-color: #555;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 5px 0;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  opacity: 0;
  transition: opacity 1s;
}

.newyear .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #555 transparent transparent transparent;
}

.newyear:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

.newyear {
  position: relative;
}

.month {
  font-size: 3em;
  line-height: 1em;
  width: 300px;
  text-align: center;
  padding-bottom: 10px;
}

.calendar {
  background: #fff;
  border-radius: 0 0 1em 1em;
  -webkit-box-shadow: 0 2px 1px rgba(0, 0, 0, .2), 0 3px 1px #fff;
  box-shadow: 0 2px 1px rgba(0, 0, 0, .2), 0 3px 1px #fff;
  color: #555;
  display: inline-block;
  padding: 2px;
}

.calendar thead {
  color: #e66b6b;
  font-weight: 700;
  text-transform: uppercase;
}

.calendar td {
  padding: .5em 1em;
  text-align: center;
}

.calendar tbody td:hover {
  background: #cacaca;
}

.current-day {
  color: #e66b6b;
  background: #cacaca;
  font-weight: bolder;
}

.prev-month,
.next-month {
  color: #cacaca;
}

＆＃13;

<table class="calendar">

  <thead>

    <tr>

      <td>Mon</td>
      <td>Tue</td>
      <td>Wed</td>
      <td>Thu</td>
      <td>Fri</td>
      <td>Sat</td>
      <td>Sun</td>

    </tr>

  </thead>

  <tbody>

    <tr>
      <td class="prev-month">29</td>
      <td class="prev-month">30</td>
      <td class="prev-month">31</td>
      <td class="newyear">1<span class="tooltiptext">Tooltip text</span> </td>
      <td>2</td>
      <td>3</td>
      <td>4</td>
    </tr>

    <tr>
      <td>5</td>
      <td>6</td>
      <td>7</td>
      <td>8</td>
      <td>9</td>
      <td>10</td>
      <td>11</td>
    </tr>

    <tr>
      <td>12</td>
      <td>13</td>
      <td>14</td>
      <td>15</td>
      <td>16</td>
      <td>17</td>
      <td class="current-day">18</td>
    </tr>

    <tr>
      <td>19</td>
      <td>20</td>
      <td>21</td>
      <td>22</td>
      <td>23</td>
      <td>24</td>
      <td>25</td>
    </tr>

    <tr>
      <td>26</td>
      <td>27</td>
      <td>28</td>
      <td>29</td>
      <td>30</td>
      <td>31</td>
      <td class="next-month">1</td>
    </tr>

  </tbody>

</table>

＆＃13;

＆＃13;

＆＃13;

摘要：

当定位为绝对（例如：position: absolute）并相对于文档定位时，工具提示将从正常文档流中取出。

要将 relative 放置到父（包含）元素，该父元素必须相对于定位 - 工具提示现在相对于父元素定位

Answer 2

只需更改此类的这些属性：

.newyear .tooltiptext {
  visibility: hidden;
  width: 120px;
  background-color: #555;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 5px 0;
  position: absolute;
  /*z-index: 1;*/
  /*bottom: 125%;*/
  left: 50%;
  /* margin-left: -60px; */ 
  top:20%; /* New line */
  opacity: 0;
  transition: opacity 1s;
}

我确实评论了"/* */"疑难解答行。我没有删除他们中的任何一个，你可以看到你做错了什么。在这里，您可以看到新工作的数字“1”以上的工作工具提示：

table {
  border-collapse: collapse;
  border-spacing: 0;
}

thead {
  width: 300px !important;
}

td {
  padding: 0;
}

.container {
  font: 87.5%/1.5em 'Lato', sans-serif;
  left: 50%;
  background: #ccc;
  position: fixed;
  top: 50%;
  width: 300px;
  transform: translate(-50%, -50%);
}

.calendar-container {
  position: relative;
}

.calendar-container header {
  border-radius: 1em 1em 0 0;
  background: #e66b6b;
  color: #fff;
  text-align: center;
  width: 402px;
}

.newyear .tooltiptext {
  visibility: hidden;
  width: 120px;
  background-color: #555;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 5px 0;
  position: absolute;
  /*z-index: 1;*/
  /*bottom: 125%;*/
  left: 50%;
  /* margin-left: -60px; */ 
  top:20%; /* New line */
  opacity: 0;
  transition: opacity 1s;
}

.newyear .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #555 transparent transparent transparent;
}

.newyear:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

.month {
  font-size: 3em;
  line-height: 1em;
  width: 300px;
  text-align: center;
  padding-bottom: 10px;
}

.calendar {
  background: #fff;
  border-radius: 0 0 1em 1em;
  -webkit-box-shadow: 0 2px 1px rgba(0, 0, 0, .2), 0 3px 1px #fff;
  box-shadow: 0 2px 1px rgba(0, 0, 0, .2), 0 3px 1px #fff;
  color: #555;
  display: inline-block;
  padding: 2px;
}

.calendar thead {
  color: #e66b6b;
  font-weight: 700;
  text-transform: uppercase;
}

.calendar td {
  padding: .5em 1em;
  text-align: center;
}

.calendar tbody td:hover {
  background: #cacaca;
}

.current-day {
  color: #e66b6b;
  background: #cacaca;
  font-weight: bolder;
}

.prev-month,
.next-month {
  color: #cacaca;
}

<div class="container">

  <div class="calendar-container">

    <header>


      <div class="month">Januar</div>

    </header>

    <table class="calendar">

      <thead>

        <tr>

          <td>Mon</td>
          <td>Tue</td>
          <td>Wed</td>
          <td>Thu</td>
          <td>Fri</td>
          <td>Sat</td>
          <td>Sun</td>

        </tr>

      </thead>

      <tbody>

        <tr>
          <td class="prev-month">29</td>
          <td class="prev-month">30</td>
          <td class="prev-month">31</td>
          <td class="newyear">1<span class="tooltiptext">Happy New Year!</span> </td>
          <td>2</td>
          <td>3</td>
          <td>4</td>
        </tr>

        <tr>
          <td>5</td>
          <td>6</td>
          <td>7</td>
          <td>8</td>
          <td>9</td>
          <td>10</td>
          <td>11</td>
        </tr>

        <tr>
          <td>12</td>
          <td>13</td>
          <td>14</td>
          <td>15</td>
          <td>16</td>
          <td>17</td>
          <td class="current-day">18</td>
        </tr>

        <tr>
          <td>19</td>
          <td>20</td>
          <td>21</td>
          <td>22</td>
          <td>23</td>
          <td>24</td>
          <td>25</td>
        </tr>

        <tr>
          <td>26</td>
          <td>27</td>
          <td>28</td>
          <td>29</td>
          <td>30</td>
          <td>31</td>
          <td class="next-month">1</td>
        </tr>

      </tbody>

    </table>



  </div>
  <!-- end calendar-container -->

</div>
<!-- end container -->