javascript - 星级评定系统，给予独一无二的评价

Question

我正在使用星标系统对数据库中的一些电影进行评级，我在一个 while 循环中添加这些电影，并在每部电影中添加星标。

我希望用户对每部电影给予独特的评价，比如如果用户给一部电影打了五颗星，那么如果他试图再次给另一部电影打五颗星，则必须有一些指示显示 在提交评级之前，将星星从黄色变为红色。谁能给我一些 sample 。

.star-rating {
  font-size: 0;
  white-space: nowrap;
  display: inline-block;
  /* width: 250px; remove this */
  height: 50px;
  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%; remove this */
  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%; remove this */
  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;
}
.star-rating.star-5 {
  width: 250px;
}
.star-rating.star-5 input,
.star-rating.star-5 i {
  width: 20%;
}
.star-rating.star-5 i ~ i {
  width: 40%;
}
.star-rating.star-5 i ~ i ~ i {
  width: 60%;
}
.star-rating.star-5 i ~ i ~ i ~ i {
  width: 80%;
}
.star-rating.star-5 i ~ i ~ i ~ i ~i {
  width: 100%;
}
.star-rating.star-3 {
  width: 150px;
}
.star-rating.star-3 input,
.star-rating.star-3 i {
  width: 33.33%;
}
.star-rating.star-3 i ~ i {
  width: 66.66%;
}
.star-rating.star-3 i ~ i ~ i {
  width: 100%;
}

<form method="get" action="" id="form1">
  <span class="star-rating star-5">
          <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>
</form>

此外，一旦问题解决，我将使用 PHP 存储评级。下面是我正在使用的代码。

感谢任何帮助:-)``

Answer 1

添加一个类 already-given 到已经给定的评级，这样如果这个类与以前的 star-rating 类一起出现，它将使用橙色星

.star-rating.already input:hover+ i
{
  background: url('/*Url of orange star*/');!important
}

<form method="get" action="" id="form1">
  <span class="star-rating star-5 already-given">
          <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>
</form>

Jquery代码

$(document).ready(function(){
  $("input[type=radio]").on("change",function(){
    $(this).parents(".star-rating").removeClass("already-given").addClass("already-given");
  });
});

编辑:

Jsfiddle demo (请删除带有橙色星号 url 的红色)

Check this also (按照评论中的要求进行的更改)