如何旋转输入类型范围拇指在JavaScript中？ [英] How to rotate input type range thumb in javascript?

问题描述

我有一个< input type =range> 并且想要旋转拇指 - 但只有输入的拇指。

我的问题是：当我尝试旋转它时，它会旋转整个滑块。

有人可以帮我吗？

function slide（event）{event.target.style.webkitTransform ='rotate（20deg）' ;}

.slidecontainer {width：100％; } .slider {-webkit-appearance：none;外观：无;宽度：100％; height：20px;背景：＃d3d3d3;概要：无;不透明度：0.7; -webkit-transition：.2s;过渡：不透明.2s; border-radius：20px; } .slider：hover {opacity：1; } .slider :: - webkit-slider-thumb {-webkit-appearance：none;外观：无;宽度：50px; height：50px; border-radius：50px;背景：灰色; background-image：url（img / thumb.png）; background-size：35px 35px; background-position：center;背景重复：不重复;光标：指针; } .slider :: - moz-range-thumb {width：50px; height：50px; border-radius：50px;背景：灰色; background-image：url（img / thumb.png）; background-size：35px 35px; background-position：center;背景重复：不重复;光标：指针; }

 < div class =slidecontainer> < / div> < input type =rangemin =100max =500value =300class =slideroninput = 
       解决方案

既然你不能使用JS来定位伪元素，考虑使用CSS变量。您可以在输入元素中定义它们，并且它们由拇指继承;因此您可以轻松实现您想要的功能。

function slide（event）{ event.target.style.setProperty（' - r'，event.target.value +'deg'）;}

  .slidecontainer {width：100％;}。slider {-webkit-appearance：none;外观：无;宽度：100％; height：20px;背景：＃d3d3d3;概要：无;不透明度：0.7; -webkit-transition：.2s;过渡：不透明.2s; border-radius：20px;}。slider：hover {opacity：1;}。slider ::  -  webkit-slider-thumb {-webkit-appearance：none;外观：无;宽度：50px; height：50px; border-radius：50px;背景：线性渐变（红色50％，蓝色0）;光标：指针;显示：内联块; transform：rotate（var（ -  r，180deg））;}。slider ::  -  moz-range-thumb {width：50px; height：50px; border-radius：50px;背景：灰色; background-image：url（img / thumb.png）; background-size：35px 35px; background-position：center;背景重复：不重复; cursor：pointer;}  

 < div class =slidecontainer > < / div> < input type =rangemin =0max =360value =180class =slideroninput = 

I have an <input type="range"> and want to rotate the thumb - but only the thumb on input.

My problem is: When i try to rotate it, it rotates the whole slider.

Can someone help me?

function slide(event){
  event.target.style.webkitTransform = 'rotate(20deg)';
}

        .slidecontainer {
            width: 100%;
        }
        .slider {
            -webkit-appearance: none;
            appearance: none;
            width: 100%;
            height: 20px;
            background: #d3d3d3;
            outline: none;
            opacity: 0.7;
            -webkit-transition: .2s;
            transition: opacity .2s;
            border-radius: 20px;
        }
        .slider:hover {
            opacity: 1;
        }
        .slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 50px;
            height: 50px;
            border-radius: 50px;
            background: grey;
            background-image: url(img/thumb.png);
            background-size: 35px 35px;
            background-position: center;
            background-repeat: no-repeat;
            cursor: pointer;
        }
        .slider::-moz-range-thumb {
            width: 50px;
            height: 50px;
            border-radius: 50px;
            background: grey;
            background-image: url(img/thumb.png);
            background-size: 35px 35px;
            background-position: center;
            background-repeat: no-repeat;
            cursor: pointer;
        }

<div class="slidecontainer">
  <input type="range" min="100" max="500" value="300" class="slider" oninput="slide(event)">
</div>

解决方案

Since you cannot target pseudo-element using JS, consider using CSS variable. You define them within the input element and they are inherited by the thumb; thus you can easily achieve what you want.

function slide(event) {
  event.target.style.setProperty('--r',event.target.value+'deg');
}

.slidecontainer {
  width: 100%;
}

.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 20px;
  background: #d3d3d3;
  outline: none;
  opacity: 0.7;
  -webkit-transition: .2s;
  transition: opacity .2s;
  border-radius: 20px;
}

.slider:hover {
  opacity: 1;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 50px;
  height: 50px;
  border-radius: 50px;
  background:linear-gradient(red 50%,blue 0);
  cursor: pointer;
  display:inline-block;
  transform:rotate(var(--r,180deg));
}

.slider::-moz-range-thumb {
  width: 50px;
  height: 50px;
  border-radius: 50px;
  background: grey;
  background-image: url(img/thumb.png);
  background-size: 35px 35px;
  background-position: center;
  background-repeat: no-repeat;
  cursor: pointer;
}

<div class="slidecontainer">
  <input type="range" min="0" max="360" value="180" class="slider" oninput="slide(event)">
</div>

这篇关于如何旋转输入类型范围拇指在JavaScript中？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！