我使用纯 CSS 进行星级评分。我怎样才能默认评级值？答案

【问题标题】：I use pure css for star rating. How can I default rating value?我使用纯 CSS 进行星级评分。我怎样才能默认评级值？
【发布时间】：2015-02-04 21:06:35
【问题描述】：

评分系统运行良好，根本不使用 js。我将评分存储在数据库中。

如果我想更改评分并从数据库中检索评分，我应该对 CSS 进行哪些更改以显示存储的评分？

例如，我之前给某样东西打了 4 星。当我点击编辑页面时，我可以看到它被评为 4 星，但我仍然可以将其更改为 1 星或 5 星。

.star-rating {
  font-size: 0;
  white-space: nowrap;
  display: inline-block;
  width: 150px;
  height: 30px;
  overflow: hidden;
  position: relative;
  background: url('data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHg9IjBweCIgeT0iMHB4IiB3aWR0aD0iMjBweCIgaGVpZ2h0PSIyMHB4IiB2aWV3Qm94PSIwIDAgMjAgMjAiIGVuYWJsZS1iYWNrZ3JvdW5kPSJuZXcgMCAwIDIwIDIwIiB4bWw6c3BhY2U9InByZXNlcnZlIj48cG9seWdvbiBmaWxsPSIjREREREREIiBwb2ludHM9IjEwLDAgMTMuMDksNi41ODMgMjAsNy42MzkgMTUsMTIuNzY0IDE2LjE4LDIwIDEwLDE2LjU4MyAzLjgyLDIwIDUsMTIuNzY0IDAsNy42MzkgNi45MSw2LjU4MyAiLz48L3N2Zz4=');
  background-size: contain;
}
.star-rating i {
  opacity: 0;
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 20%;
  z-index: 1;
  background: url('data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHg9IjBweCIgeT0iMHB4IiB3aWR0aD0iMjBweCIgaGVpZ2h0PSIyMHB4IiB2aWV3Qm94PSIwIDAgMjAgMjAiIGVuYWJsZS1iYWNrZ3JvdW5kPSJuZXcgMCAwIDIwIDIwIiB4bWw6c3BhY2U9InByZXNlcnZlIj48cG9seWdvbiBmaWxsPSIjRkZERjg4IiBwb2ludHM9IjEwLDAgMTMuMDksNi41ODMgMjAsNy42MzkgMTUsMTIuNzY0IDE2LjE4LDIwIDEwLDE2LjU4MyAzLjgyLDIwIDUsMTIuNzY0IDAsNy42MzkgNi45MSw2LjU4MyAiLz48L3N2Zz4=');
  background-size: contain;
}
.star-rating input {
  -moz-appearance: none;
  -webkit-appearance: none;
  opacity: 0;
  display: inline-block;
  width: 20%;
  height: 100%;
  margin: 0;
  padding: 0;
  z-index: 2;
  position: relative;
}
.star-rating input:hover + i,
.star-rating input:checked + i {
  opacity: 1;
}
.star-rating i ~ i {
  width: 40%;
}
.star-rating i ~ i ~ i {
  width: 60%;
}
.star-rating i ~ i ~ i ~ i {
  width: 80%;
}
.star-rating i ~ i ~ i ~ i ~ i {
  width: 100%;
}
::after,
::before {
  height: 100%;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  text-align: center;
  vertical-align: middle;
}

<span class="star-rating col-sm-10">
  <input type="radio" name="rating" value="1"><i></i>
  <input type="radio" name="rating" value="2"><i></i>
  <input type="radio" name="rating" value="3"><i></i>
  <input type="radio" name="rating" value="4"><i></i>
  <input type="radio" name="rating" value="5"><i></i>
</span>

【问题讨论】：

标签： css rating

【解决方案1】：

将checked 属性添加到所需的input：

<span class="star-rating col-sm-10">
  <input type="radio" name="rating" value="1"><i></i>
  <input type="radio" name="rating" value="2"><i></i>
  <input type="radio" name="rating" value="3" checked><i></i>
  <input type="radio" name="rating" value="4"><i></i>
  <input type="radio" name="rating" value="5"><i></i>
</span>

您还需要添加此 CSS

.star-rating input:hover ~ input:checked + i {
  opacity: 0;
}

.star-rating {
  font-size: 0;
  white-space: nowrap;
  display: inline-block;
  width: 150px;
  height: 30px;
  overflow: hidden;
  position: relative;
  background: url('data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHg9IjBweCIgeT0iMHB4IiB3aWR0aD0iMjBweCIgaGVpZ2h0PSIyMHB4IiB2aWV3Qm94PSIwIDAgMjAgMjAiIGVuYWJsZS1iYWNrZ3JvdW5kPSJuZXcgMCAwIDIwIDIwIiB4bWw6c3BhY2U9InByZXNlcnZlIj48cG9seWdvbiBmaWxsPSIjREREREREIiBwb2ludHM9IjEwLDAgMTMuMDksNi41ODMgMjAsNy42MzkgMTUsMTIuNzY0IDE2LjE4LDIwIDEwLDE2LjU4MyAzLjgyLDIwIDUsMTIuNzY0IDAsNy42MzkgNi45MSw2LjU4MyAiLz48L3N2Zz4=');
  background-size: contain;
}
.star-rating i {
  opacity: 0;
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 20%;
  z-index: 1;
  background: url('data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHg9IjBweCIgeT0iMHB4IiB3aWR0aD0iMjBweCIgaGVpZ2h0PSIyMHB4IiB2aWV3Qm94PSIwIDAgMjAgMjAiIGVuYWJsZS1iYWNrZ3JvdW5kPSJuZXcgMCAwIDIwIDIwIiB4bWw6c3BhY2U9InByZXNlcnZlIj48cG9seWdvbiBmaWxsPSIjRkZERjg4IiBwb2ludHM9IjEwLDAgMTMuMDksNi41ODMgMjAsNy42MzkgMTUsMTIuNzY0IDE2LjE4LDIwIDEwLDE2LjU4MyAzLjgyLDIwIDUsMTIuNzY0IDAsNy42MzkgNi45MSw2LjU4MyAiLz48L3N2Zz4=');
  background-size: contain;
}
.star-rating input {
  -moz-appearance: none;
  -webkit-appearance: none;
  opacity: 0;
  display: inline-block;
  width: 20%;
  height: 100%;
  margin: 0;
  padding: 0;
  z-index: 2;
  position: relative;
}
.star-rating input:hover ~ input:checked + i {
  opacity: 0;
}
.star-rating input:hover + i,
.star-rating input:checked + i {
  opacity: 1;
}
.star-rating i ~ i {
  width: 40%;
}
.star-rating i ~ i ~ i {
  width: 60%;
}
.star-rating i ~ i ~ i ~ i {
  width: 80%;
}
.star-rating i ~ i ~ i ~ i ~ i {
  width: 100%;
}
::after,
::before {
  height: 100%;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  text-align: center;
  vertical-align: middle;
}

<span class="star-rating col-sm-10">
  <input type="radio" name="rating" value="1"><i></i>
  <input type="radio" name="rating" value="2"><i></i>
  <input type="radio" name="rating" value="3" checked><i></i>
  <input type="radio" name="rating" value="4"><i></i>
  <input type="radio" name="rating" value="5"><i></i>
</span>

或者，替换

.star-rating:hover input:checked + i

与

.star-rating:not(:hover) input:checked + i

.star-rating {
  font-size: 0;
  white-space: nowrap;
  display: inline-block;
  width: 150px;
  height: 30px;
  overflow: hidden;
  position: relative;
  background: url('data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHg9IjBweCIgeT0iMHB4IiB3aWR0aD0iMjBweCIgaGVpZ2h0PSIyMHB4IiB2aWV3Qm94PSIwIDAgMjAgMjAiIGVuYWJsZS1iYWNrZ3JvdW5kPSJuZXcgMCAwIDIwIDIwIiB4bWw6c3BhY2U9InByZXNlcnZlIj48cG9seWdvbiBmaWxsPSIjREREREREIiBwb2ludHM9IjEwLDAgMTMuMDksNi41ODMgMjAsNy42MzkgMTUsMTIuNzY0IDE2LjE4LDIwIDEwLDE2LjU4MyAzLjgyLDIwIDUsMTIuNzY0IDAsNy42MzkgNi45MSw2LjU4MyAiLz48L3N2Zz4=');
  background-size: contain;
}
.star-rating i {
  opacity: 0;
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 20%;
  z-index: 1;
  background: url('data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHg9IjBweCIgeT0iMHB4IiB3aWR0aD0iMjBweCIgaGVpZ2h0PSIyMHB4IiB2aWV3Qm94PSIwIDAgMjAgMjAiIGVuYWJsZS1iYWNrZ3JvdW5kPSJuZXcgMCAwIDIwIDIwIiB4bWw6c3BhY2U9InByZXNlcnZlIj48cG9seWdvbiBmaWxsPSIjRkZERjg4IiBwb2ludHM9IjEwLDAgMTMuMDksNi41ODMgMjAsNy42MzkgMTUsMTIuNzY0IDE2LjE4LDIwIDEwLDE2LjU4MyAzLjgyLDIwIDUsMTIuNzY0IDAsNy42MzkgNi45MSw2LjU4MyAiLz48L3N2Zz4=');
  background-size: contain;
}
.star-rating input {
  -moz-appearance: none;
  -webkit-appearance: none;
  opacity: 0;
  display: inline-block;
  width: 20%;
  height: 100%;
  margin: 0;
  padding: 0;
  z-index: 2;
  position: relative;
}
.star-rating input:hover + i,
.star-rating:not(:hover) input:checked + i {
  opacity: 1;
}
.star-rating i ~ i {
  width: 40%;
}
.star-rating i ~ i ~ i {
  width: 60%;
}
.star-rating i ~ i ~ i ~ i {
  width: 80%;
}
.star-rating i ~ i ~ i ~ i ~ i {
  width: 100%;
}
::after,
::before {
  height: 100%;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  text-align: center;
  vertical-align: middle;
}

<span class="star-rating col-sm-10">
  <input type="radio" name="rating" value="1"><i></i>
  <input type="radio" name="rating" value="2"><i></i>
  <input type="radio" name="rating" value="3" checked><i></i>
  <input type="radio" name="rating" value="4"><i></i>
  <input type="radio" name="rating" value="5"><i></i>
</span>

【讨论】：

【解决方案2】：

使用服务器端脚本在第 4 个（或任何一个）选项上设置 checked 属性：

<span class="star-rating col-sm-10">
  <input type="radio" name="rating" value="1"><i></i>
  <input type="radio" name="rating" value="2"><i></i>
  <input type="radio" name="rating" value="3"><i></i>
  <input type="radio" name="rating" value="4" checked><i></i>
  <input type="radio" name="rating" value="5"><i></i>
</span>

【讨论】：