明星评分CSS的问题

时间：2019-09-21 11:13:58

标签： javascript html css

我想实施星级评定，我正在研究以下星级评定代码。它正在工作，但问题是，如果我给的评级为1，则无法取消选择我先前选择的那颗星。它仅在第一颗恒星上发生，因为它没有任何恒星附着，因此用户可以选择它以取消选择先前选择的恒星。

@import url(//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css);
fieldset,
label {
  margin: 0;
  padding: 0;
}

body {
  margin: 20px;
}

h1 {
  font-size: 1.5em;
  margin: 10px;
}


/****** Style Star Rating Widget *****/

.rating {
  border: none;
  float: left;
}

.rating>input {
  display: none;
}

.rating>label:before {
  margin: 5px;
  font-size: 1.25em;
  font-family: FontAwesome;
  display: inline-block;
  content: "\f005";
}

.rating>.half:before {
  content: "\f089";
  position: absolute;
}

.rating>label {
  color: #ddd;
  float: right;
}


/***** CSS Magic to Highlight Stars on Hover *****/

.rating>input:checked~label,

/* show gold star when clicked */

.rating:not(:checked)>label:hover,

/* hover current star */

.rating:not(:checked)>label:hover~label {
  color: #FFD700;
}


/* hover previous stars in list */

.rating>input:checked+label:hover,

/* hover current star when changing rating */

.rating>input:checked~label:hover,
.rating>label:hover~input:checked~label,

/* lighten current selection */

.rating>input:checked~label:hover~label {
  color: #FFED85;
}
<fieldset class="rating">
  <input type="radio" id="star5" name="rating" value="5" /><label class="full" for="star5" title="Awesome - 5 stars"></label>
  <input type="radio" id="star4half" name="rating" value="4 and a half" /><label class="half" for="star4half" title="Pretty good - 4.5 stars"></label>
  <input type="radio" id="star4" name="rating" value="4" /><label class="full" for="star4" title="Pretty good - 4 stars"></label>
  <input type="radio" id="star3half" name="rating" value="3 and a half" /><label class="half" for="star3half" title="Meh - 3.5 stars"></label>
  <input type="radio" id="star3" name="rating" value="3" /><label class="full" for="star3" title="Meh - 3 stars"></label>
  <input type="radio" id="star2half" name="rating" value="2 and a half" /><label class="half" for="star2half" title="Kinda bad - 2.5 stars"></label>
  <input type="radio" id="star2" name="rating" value="2" /><label class="full" for="star2" title="Kinda bad - 2 stars"></label>
  <input type="radio" id="star1half" name="rating" value="1 and a half" /><label class="half" for="star1half" title="Meh - 1.5 stars"></label>
  <input type="radio" id="star1" name="rating" value="1" /><label class="full" for="star1" title="Sucks big time - 1 star"></label>
  <input type="radio" id="starhalf" name="rating" value="half" /><label class="half" for="starhalf" title="Sucks big time - 0.5 stars"></label>
</fieldset>

3 个答案:

答案 0 :(得分：2)

如果您有一系列可见的单选按钮，并且想要取消选中所有按钮，则必须有一个另一个单选按钮（可见或不可见），您可以对其进行复选。

这使检查焦点可以移出先前选中的任何可见单选按钮。

在下面的示例中，我添加了一个不可见的单选选项（称为.reset-option）和一个<button>（称为.reset-button），当单击该选项时，将检查焦点从任一单选按钮移开按钮目前已选中不可见的单选选项。

工作示例： 

const resetOption = document.getElementsByClassName('reset-option')[0];
const resetButton = document.getElementsByClassName('reset-button')[0];

const resetRating = () => resetOption.checked = true;

resetButton.addEventListener('click', resetRating, false);
@import url(//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css);

fieldset, label { margin: 0; padding: 0; }
body{ margin: 20px; }
h1 { font-size: 1.5em; margin: 10px; }

/****** Style Star Rating Widget *****/

.rating { 
  border: none;
  float: left;
}

.rating > [id^="star"] { display: none; } 
.rating > label:before { 
  margin: 5px;
  font-size: 1.25em;
  font-family: FontAwesome;
  display: inline-block;
  content: "\f005";
}

.rating > .half:before { 
  content: "\f089";
  position: absolute;
}

.rating > label { 
  color: #ddd; 
 float: right; 
}

/***** CSS Magic to Highlight Stars on Hover *****/

.rating > [id^="star"]:checked ~ label, /* show gold star when clicked */
.rating:not(:checked) > label:hover, /* hover current star */
.rating:not(:checked) > label:hover ~ label { color: #FFD700;  } /* hover previous stars in list */

.rating > [id^="star"]:checked + label:hover, /* hover current star when changing rating */
.rating > [id^="star"]:checked ~ label:hover,
.rating > label:hover ~ [id^="star"]:checked ~ label, /* lighten current selection */
.rating > [id^="star"]:checked ~ label:hover ~ label { color: #FFED85;  }

.reset-option {
display: none;
}

.reset-button {
margin: 6px 12px;
background-color: rgb(255, 255, 255);
text-transform: uppercase;
}
<fieldset class="rating">
    <input type="radio" id="star5" name="rating" value="5" /><label class = "full" for="star5" title="Awesome - 5 stars"></label>
    <input type="radio" id="star4half" name="rating" value="4 and a half" /><label class="half" for="star4half" title="Pretty good - 4.5 stars"></label>
    <input type="radio" id="star4" name="rating" value="4" /><label class = "full" for="star4" title="Pretty good - 4 stars"></label>
    <input type="radio" id="star3half" name="rating" value="3 and a half" /><label class="half" for="star3half" title="Meh - 3.5 stars"></label>
    <input type="radio" id="star3" name="rating" value="3" /><label class = "full" for="star3" title="Meh - 3 stars"></label>
    <input type="radio" id="star2half" name="rating" value="2 and a half" /><label class="half" for="star2half" title="Kinda bad - 2.5 stars"></label>
    <input type="radio" id="star2" name="rating" value="2" /><label class = "full" for="star2" title="Kinda bad - 2 stars"></label>
    <input type="radio" id="star1half" name="rating" value="1 and a half" /><label class="half" for="star1half" title="Meh - 1.5 stars"></label>
    <input type="radio" id="star1" name="rating" value="1" /><label class = "full" for="star1" title="Sucks big time - 1 star"></label>
    <input type="radio" id="starhalf" name="rating" value="half" /><label class="half" for="starhalf" title="Sucks big time - 0.5 stars"></label>
    <input type="radio" class="reset-option" name="rating" value="reset" />
</fieldset>

<button type="button" class="reset-button">Reset</button>

答案 1 :(得分：2)

  

注意：就UX而言，我在这里给出的两种解决方案都不是好的解决方案（无法提前知道要取消选择所有恒星应采取的措施）。如果您想采用对用户友好的解决方案，@ Rounin的答案就是正确的选择。

添加一小段javaScript，您可以将事件添加到前半部分输入中，然后根据其先前的值将其选中或单击后取消选中它：

const label = document.querySelector('[for="starhalf"]');
const input = document.getElementById('starhalf');

label.addEventListener('click', (evt) => {
  evt.preventDefault();
  input.checked = !input.checked;
});
@import url(//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css);
fieldset,
label {
  margin: 0;
  padding: 0;
}

body {
  margin: 20px;
}

h1 {
  font-size: 1.5em;
  margin: 10px;
}


/****** Style Star Rating Widget *****/

.rating {
  border: none;
  float: left;
}

.rating>input {
  display: none;
}

.rating>label:before {
  margin: 5px;
  font-size: 1.25em;
  font-family: FontAwesome;
  display: inline-block;
  content: "\f005";
}

.rating>.half:before {
  content: "\f089";
  position: absolute;
}

.rating>label {
  color: #ddd;
  float: right;
}


/***** CSS Magic to Highlight Stars on Hover *****/

.rating>input:checked~label,

/* show gold star when clicked */

.rating:not(:checked)>label:hover,

/* hover current star */

.rating:not(:checked)>label:hover~label {
  color: #FFD700;
}


/* hover previous stars in list */

.rating>input:checked+label:hover,

/* hover current star when changing rating */

.rating>input:checked~label:hover,
.rating>label:hover~input:checked~label,

/* lighten current selection */

.rating>input:checked~label:hover~label {
  color: #FFED85;
}
<fieldset class="rating">
  <input type="radio" id="star5" name="rating" value="5" /><label class="full" for="star5" title="Awesome - 5 stars"></label>
  <input type="radio" id="star4half" name="rating" value="4 and a half" /><label class="half" for="star4half" title="Pretty good - 4.5 stars"></label>
  <input type="radio" id="star4" name="rating" value="4" /><label class="full" for="star4" title="Pretty good - 4 stars"></label>
  <input type="radio" id="star3half" name="rating" value="3 and a half" /><label class="half" for="star3half" title="Meh - 3.5 stars"></label>
  <input type="radio" id="star3" name="rating" value="3" /><label class="full" for="star3" title="Meh - 3 stars"></label>
  <input type="radio" id="star2half" name="rating" value="2 and a half" /><label class="half" for="star2half" title="Kinda bad - 2.5 stars"></label>
  <input type="radio" id="star2" name="rating" value="2" /><label class="full" for="star2" title="Kinda bad - 2 stars"></label>
  <input type="radio" id="star1half" name="rating" value="1 and a half" /><label class="half" for="star1half" title="Meh - 1.5 stars"></label>
  <input type="radio" id="star1" name="rating" value="1" /><label class="full" for="star1" title="Sucks big time - 1 star"></label>
  <input type="radio" id="starhalf" name="rating" value="half" /><label class="half" for="starhalf" title="Sucks big time - 0.5 stars"></label>
</fieldset>

编辑：阅读您的评论，我了解到，如果用户在星空之外单击时选择了上半个起点，那么您想取消选择它。（我没有从您的问题中得到这个信息）。这是实现此目的的替代代码：

const fieldset = document.querySelector('fieldset.rating');
const halfstar = fieldset.querySelector('#starhalf');

document.addEventListener('click', (evt) => {
  const element = evt.target;
  if((!element.parentNode || element.parentNode !== fieldset) && halfstar.checked) {
    halfstar.checked = false;
  }
});
@import url(//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css);
fieldset,
label {
  margin: 0;
  padding: 0;
}

body {
  margin: 20px;
}

h1 {
  font-size: 1.5em;
  margin: 10px;
}


/****** Style Star Rating Widget *****/

.rating {
  border: none;
  float: left;
}

.rating>input {
  display: none;
}

.rating>label:before {
  margin: 5px;
  font-size: 1.25em;
  font-family: FontAwesome;
  display: inline-block;
  content: "\f005";
}

.rating>.half:before {
  content: "\f089";
  position: absolute;
}

.rating>label {
  color: #ddd;
  float: right;
}


/***** CSS Magic to Highlight Stars on Hover *****/

.rating>input:checked~label,

/* show gold star when clicked */

.rating:not(:checked)>label:hover,

/* hover current star */

.rating:not(:checked)>label:hover~label {
  color: #FFD700;
}


/* hover previous stars in list */

.rating>input:checked+label:hover,

/* hover current star when changing rating */

.rating>input:checked~label:hover,
.rating>label:hover~input:checked~label,

/* lighten current selection */

.rating>input:checked~label:hover~label {
  color: #FFED85;
}
<fieldset class="rating">
  <input type="radio" id="star5" name="rating" value="5" /><label class="full" for="star5" title="Awesome - 5 stars"></label>
  <input type="radio" id="star4half" name="rating" value="4 and a half" /><label class="half" for="star4half" title="Pretty good - 4.5 stars"></label>
  <input type="radio" id="star4" name="rating" value="4" /><label class="full" for="star4" title="Pretty good - 4 stars"></label>
  <input type="radio" id="star3half" name="rating" value="3 and a half" /><label class="half" for="star3half" title="Meh - 3.5 stars"></label>
  <input type="radio" id="star3" name="rating" value="3" /><label class="full" for="star3" title="Meh - 3 stars"></label>
  <input type="radio" id="star2half" name="rating" value="2 and a half" /><label class="half" for="star2half" title="Kinda bad - 2.5 stars"></label>
  <input type="radio" id="star2" name="rating" value="2" /><label class="full" for="star2" title="Kinda bad - 2 stars"></label>
  <input type="radio" id="star1half" name="rating" value="1 and a half" /><label class="half" for="star1half" title="Meh - 1.5 stars"></label>
  <input type="radio" id="star1" name="rating" value="1" /><label class="full" for="star1" title="Sucks big time - 1 star"></label>
  <input type="radio" id="starhalf" name="rating" value="half" /><label class="half" for="starhalf" title="Sucks big time - 0.5 stars"></label>
</fieldset>

答案 2 :(得分：2)

编辑：一个更好的解决方案suggested by @ElChiniNet：

const allStarLabels = document.querySelectorAll('.rating label');

allStarLabels.forEach(thisLabel =>
    thisLabel.addEventListener('click', e => {
        e.preventDefault();
        let radioElement = e.target.previousElementSibling;
        radioElement.checked = !radioElement.checked;
    })
)


const allStarLabels = document.querySelectorAll('.rating label');

allStarLabels.forEach(thisLabel =>
    thisLabel.addEventListener('click', e => {
    		e.preventDefault();
        let radioElement = e.target.previousElementSibling;
        radioElement.checked = !radioElement.checked;
    })
)
@import url(//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css);
fieldset,
label {
  margin: 0;
  padding: 0;
}

body {
  margin: 20px;
}

h1 {
  font-size: 1.5em;
  margin: 10px;
}


/****** Style Star Rating Widget *****/

.rating {
  border: none;
  float: left;
}

.rating>input {
  display: none;
}

.rating>label:before {
  margin: 5px;
  font-size: 1.25em;
  font-family: FontAwesome;
  display: inline-block;
  content: "\f005";
}

.rating>.half:before {
  content: "\f089";
  position: absolute;
}

.rating>label {
  color: #ddd;
  float: right;
}


/***** CSS Magic to Highlight Stars on Hover *****/

.rating>input:checked~label,

/* show gold star when clicked */

.rating:not(:checked)>label:hover,

/* hover current star */

.rating:not(:checked)>label:hover~label {
  color: #FFD700;
}


/* hover previous stars in list */

.rating>input:checked+label:hover,

/* hover current star when changing rating */

.rating>input:checked~label:hover,
.rating>label:hover~input:checked~label,

/* lighten current selection */

.rating>input:checked~label:hover~label {
  color: #FFED85;
}
<fieldset class="rating">
  <input type="radio" id="star5" name="rating" value="5" /><label class="full" for="star5" title="Awesome - 5 stars"></label>
  <input type="radio" id="star4half" name="rating" value="4 and a half" /><label class="half" for="star4half" title="Pretty good - 4.5 stars"></label>
  <input type="radio" id="star4" name="rating" value="4" /><label class="full" for="star4" title="Pretty good - 4 stars"></label>
  <input type="radio" id="star3half" name="rating" value="3 and a half" /><label class="half" for="star3half" title="Meh - 3.5 stars"></label>
  <input type="radio" id="star3" name="rating" value="3" /><label class="full" for="star3" title="Meh - 3 stars"></label>
  <input type="radio" id="star2half" name="rating" value="2 and a half" /><label class="half" for="star2half" title="Kinda bad - 2.5 stars"></label>
  <input type="radio" id="star2" name="rating" value="2" /><label class="full" for="star2" title="Kinda bad - 2 stars"></label>
  <input type="radio" id="star1half" name="rating" value="1 and a half" /><label class="half" for="star1half" title="Meh - 1.5 stars"></label>
  <input type="radio" id="star1" name="rating" value="1" /><label class="full" for="star1" title="Sucks big time - 1 star"></label>
  <input type="radio" id="starhalf" name="rating" value="half" /><label class="half" for="starhalf" title="Sucks big time - 0.5 stars"></label>
</fieldset>

我最初的建议：

这可以使用一些JavaScript来完成。聆听每个<label>（星星的视觉部分）上的事件。如果单击<input type="radio">时已经检查了相应的<label>，则将取消选择单选。

// Get all the <label> elements
const allStarLabels = document.querySelectorAll('.rating label');

// Prepare a function to reset the radio
const resetRadio = radioElement => {
    // Has to be done inside a timeout to make sure the click event has finished
    setTimeout(() => {
        radioElement.checked = false;
    }, 5);
}

// Add an event listener to each label
allStarLabels.forEach(thisLabel =>
    thisLabel.addEventListener('click', e => {
    // Get the corresponding input[type=radio] element
    let radioElement = thisLabel.previousElementSibling;
    if(radioElement.checked) {
        resetRadio(radioElement);
        }
    })
)

在此处查看完整版本：

const allStarLabels = document.querySelectorAll('.rating label');

const resetRadio = radioElement => {
    setTimeout(() => {
        radioElement.checked = false;
    }, 5);
}

allStarLabels.forEach(thisLabel =>
    thisLabel.addEventListener('click', e => {
        let radioElement = e.target.previousElementSibling;
        if(radioElement.checked) {
    	    resetRadio(radioElement);
        }
    })
)
@import url(//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css);
fieldset,
label {
  margin: 0;
  padding: 0;
}

body {
  margin: 20px;
}

h1 {
  font-size: 1.5em;
  margin: 10px;
}


/****** Style Star Rating Widget *****/

.rating {
  border: none;
  float: left;
}

.rating>input {
  display: none;
}

.rating>label:before {
  margin: 5px;
  font-size: 1.25em;
  font-family: FontAwesome;
  display: inline-block;
  content: "\f005";
}

.rating>.half:before {
  content: "\f089";
  position: absolute;
}

.rating>label {
  color: #ddd;
  float: right;
}


/***** CSS Magic to Highlight Stars on Hover *****/

.rating>input:checked~label,

/* show gold star when clicked */

.rating:not(:checked)>label:hover,

/* hover current star */

.rating:not(:checked)>label:hover~label {
  color: #FFD700;
}


/* hover previous stars in list */

.rating>input:checked+label:hover,

/* hover current star when changing rating */

.rating>input:checked~label:hover,
.rating>label:hover~input:checked~label,

/* lighten current selection */

.rating>input:checked~label:hover~label {
  color: #FFED85;
}
<fieldset class="rating">
  <input type="radio" id="star5" name="rating" value="5" /><label class="full" for="star5" title="Awesome - 5 stars"></label>
  <input type="radio" id="star4half" name="rating" value="4 and a half" /><label class="half" for="star4half" title="Pretty good - 4.5 stars"></label>
  <input type="radio" id="star4" name="rating" value="4" /><label class="full" for="star4" title="Pretty good - 4 stars"></label>
  <input type="radio" id="star3half" name="rating" value="3 and a half" /><label class="half" for="star3half" title="Meh - 3.5 stars"></label>
  <input type="radio" id="star3" name="rating" value="3" /><label class="full" for="star3" title="Meh - 3 stars"></label>
  <input type="radio" id="star2half" name="rating" value="2 and a half" /><label class="half" for="star2half" title="Kinda bad - 2.5 stars"></label>
  <input type="radio" id="star2" name="rating" value="2" /><label class="full" for="star2" title="Kinda bad - 2 stars"></label>
  <input type="radio" id="star1half" name="rating" value="1 and a half" /><label class="half" for="star1half" title="Meh - 1.5 stars"></label>
  <input type="radio" id="star1" name="rating" value="1" /><label class="full" for="star1" title="Sucks big time - 1 star"></label>
  <input type="radio" id="starhalf" name="rating" value="half" /><label class="half" for="starhalf" title="Sucks big time - 0.5 stars"></label>
</fieldset>

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