最近,我想将数字转换为星级,然后在这里偶然发现了这篇文章:https://stackoverflow.com/a/1987545/1871869这正是我想要做的。我已经遵循了这个解释,但是我似乎无法在我的本地环境中使用它,而且我想知道是否有人可以帮助我。这是我的尝试:
$.fn.stars = function() {
return $(this).each(function() {
// Get the value
var val = parseFloat($(this).html());
// Make sure that the value is in 0 - 5 range, multiply to get width
var size = Math.max(0, (Math.min(5, val))) * 16;
// Create stars holder
var $span = $('<span />').width(size);
// Replace the numerical value with stars
$(this).html($span);
});
}
$(function() {
console.log("Calling stars()");
$('.results-contents span.stars').stars();
});
.results {
font-size: 0;
padding-bottom: 16px;
}
.results-content {
font-size: 13px;
display: inline-block;
margin-left: 20px;
vertical-align: top;
}
.results .results-content span.stars span.stars span {
background: url('/resources/graphics/stars-icons.png') 0 -36px repeat-x;
width: 175px;
height: 80px;
}
.results .results-content span.stars {
max-width: 80px;
background-position: 0 0;
}
<script type="text/template" id="results-template">
<div class="results">
<div class="results-content">
<span class="stars">4.0</span>
</div>
</div>
</script>
星星图片:
我想要做的就是简单地显示空星,然后根据等级,在空星上方显示橙色星,这样我就可以显示全星和半星。但是,我得到的只是一个要显示的数字。我上面的
console.log
似乎被调用了,但是图像的实际渲染和星级评定的计算似乎不起作用。任何帮助,将不胜感激。谢谢! 最佳答案
从CSS样式错误到选择器错误,您遇到了多个问题。下面不是完美的,但是正在渲染。
$.fn.stars = function() {
return this.each(function() {
// Get the value
var val = parseFloat($(this).html());
// Make sure that the value is in 0 - 5 range, multiply to get width
var size = Math.max(0, (Math.min(5, val))) * 36.5;
// Create stars holder
var $span = $('<span> </span>').width(size);
// Replace the numerical value with stars
$(this).empty().append($span);
});
}
$(function() {
console.log("Calling stars()");
$('.results-content span.stars').stars();
});
.results {
font-size: 0;
padding-bottom: 16px;
}
.results-content {
font-size: 13px;
display: inline-block;
margin-left: 20px;
vertical-align: top;
background: url('https://i.stack.imgur.com/rwkqF.png') 0 0 repeat-x;
width: 185px;
height: 35px;
}
.results .results-content span.stars span {
background: url('https://i.stack.imgur.com/rwkqF.png') 0 -36px repeat-x;
display: inline-block;
height: 35px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="results">
<div class="results-content">
<span class="stars">0.0</span>
</div>
</div>
<div class="results">
<div class="results-content">
<span class="stars">0.5</span>
</div>
</div>
<div class="results">
<div class="results-content">
<span class="stars">1.0</span>
</div>
</div>
<div class="results">
<div class="results-content">
<span class="stars">1.5</span>
</div>
</div>
<div class="results">
<div class="results-content">
<span class="stars">2.0</span>
</div>
</div>
<div class="results">
<div class="results-content">
<span class="stars">2.0</span>
</div>
</div>
<div class="results">
<div class="results-content">
<span class="stars">2.5</span>
</div>
</div>
<div class="results">
<div class="results-content">
<span class="stars">3.0</span>
</div>
</div>
<div class="results">
<div class="results-content">
<span class="stars">3.5</span>
</div>
</div>
<div class="results">
<div class="results-content">
<span class="stars">4.0</span>
</div>
</div>
<div class="results">
<div class="results-content">
<span class="stars">4.5</span>
</div>
</div>
<div class="results">
<div class="results-content">
<span class="stars">5.0</span>
</div>
</div>
关于javascript - 根据浮点数从图像中创建星级?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/40850710/