我如何在代码中使用图像精灵?

时间:2017-10-14 19:35:47

标签: javascript html

这是我的代码,如何让图像精灵使用它?我该如何设置?

我刚读过这篇文章,这应该可以解决我遇到的问题,但我不知道如何设置它。

非常感谢所有帮助。

代码

https://jsfiddle.net/7amfsp10/

以下是您可以尝试使用的2张图片。

https://i.imgur.com/T9n7wTd.png

https://i.imgur.com/jkxd2F5.png

1 个答案:

答案 0 :(得分:0)

https://jsfiddle.net/7amfsp10/3/

我在乞讨时加入

<div style="visibility: hidden; position: absolute">
  <img style="visibility: hidden; position: absolute" src="http://via.placeholder.com/260x260" aria-hidden="true" alt="">
</div>

预加载您将来使用的图像。由于浏览器是智能的,因此不会两次加载相同的图像。所以我们只是在页面上加载图片,然后我们隐藏它以便它不会被看到,但它已经兑现了。

如果您想更改图片,只需更改<img>内和js代码中的链接。

<强> #UPDATE 将属性aria-hidden="true"添加到图像,使其对屏幕阅读器不可见。

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<div style="visibility: hidden; position: absolute">
  <img style="visibility: hidden; position: absolute" src="http://via.placeholder.com/260x260" aria-hidden="true" alt="">
</div>

<button id="playButton2" style="display:block; width: 266px; height: 266px; cursor: pointer;background-color: #000000 ;background-image: linear-gradient( to right,transparent 83px,#0059dd 83px, #0059dd 86px, transparent 86px, transparent  174px, #0059dd 174px, #0059dd 177px, transparent 177px ); border: 3px solid #0059dd;"
onclick=" 
    var button = document.getElementById('playButton2');
    var player = document.getElementById('player2');
      document.querySelector('#playButton2 .initial').style.display='none';
      document.querySelector('#playButton2 .pause').style.display='none';
      document.querySelector('#playButton2 .play').style.display='none';
    player.volume=1.0; if (player.paused) {
    playButton2.style.border='3px solid #e77d19';
    playButton2.style.background = 'linear-gradient( to right,transparent 83px,#e77d19 83px, #e77d19 86px, transparent 86px, transparent 174px, #e77d19 174px, #e77d19 177px, transparent 177px ), url(\'http://via.placeholder.com/260x260\')';
    playButton2.style.backgroundColor = 'transparent';
    playButton2.style.backgroundRepeat = 'no-repeat';
    playButton2.style.backgroundPosition = 'center'; 
    document.querySelector('#playButton2 .pause').style.display='inline-block';
    player.play();
    } else {
    playButton2.style.border='3px solid #e77d19';
    playButton2.style.background = 'linear-gradient( to right,transparent 83px,#e77d19 83px, #e77d19 86px, transparent 86px, transparent 174px, #e77d19 174px, #e77d19 177px, transparent 177px ), url(\'http://via.placeholder.com/260x260\')';
    playButton2.style.backgroundColor = 'transparent';    
    playButton2.style.backgroundRepeat = 'no-repeat';
    playButton2.style.backgroundPosition = 'center'; 
    document.querySelector('#playButton2 .play').style.display='inline-block';
    player.pause();
    }">

  <svg class="play" style="display: none;" width="60" height="72" viewbox="0 0 16 14">
    <path d="M12.945.38l-.652.7623zM0 4v6h2.804L8 13V1L2.804 4H0zm7-1.268v8.536L3.072 9H1V5h2.072L7 2.732z" fill="#1ed760 " fill-rule="evenodd"></path>
  </svg>

  <svg class="pause" style="display: none;" width="60" height="72" viewbox="0 0 16 14">
    <path d="M12.945.38l-.652.762c1.577 1.462 2.57 3.544 2.57 5.858 0 2.314-.994 4.396-2.57 5.858l.65.763c1.79-1.644 2.92-3.997 2.92-6.62S14.735 2.024 12.945.38zm-2.272 2.66l-.65.762c.826.815 1.34 1.947 1.34 3.198 0 1.25-.515 2.382-1.342 3.2l.652.762c1.04-1 1.69-2.404 1.69-3.96 0-1.558-.65-2.963-1.69-3.963zM0 4v6h2.804L8 13V1L2.804 4H0zm7-1.268v8.536L3.072 9H1V5h2.072L7 2.732z"
    fill="#1ed760 " fill-rule="evenodd"></path>
  </svg>

  <svg class="initial" width="90" height="108" viewbox="0 -10 85 120">
    <path fill="currentColor" style="stroke: #e77d19; stroke-width:3px;color:black; " d="M81 44.6c5 3 5 7.8 0 10.8L9 98.7c-5 3-9 .7-9-5V6.3c0-5.7 4-8 9-5l72 43.3z"></path>
  </svg>

</button>

<audio id="player2" style="display:none;">
  <source src=';' type='audio/mpeg'></source>
</audio>
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