Question

在onClick上添加样式时，什么时候足够？

意思，作为一个例子。

光标：指针;在最重要的部分，我是否需要将它放在中间部分2次，或者一次足够？这就是我所要求的全部内容。

playButton4.style.cursor = 'pointer';

    <button id="playButton4" style="display:block; width: 266px; height: 266px; cursor: pointer;background-image: linear-gradient( to right,#000000 83px,#0059dd 83px, #0059dd 86px, #000000 86px, #000000  174px, #0059dd 174px, #0059dd 177px, #000000 177px ); border: 3px solid #0059dd;"
    onclick=" 
        var button = document.getElementById('playButton4');
        var player = document.getElementById('player4');
          document.querySelector('#playButton4 .initial').style.display='none';
          document.querySelector('#playButton4 .pause').style.display='none';
          document.querySelector('#playButton4 .play').style.display='none';
        player.volume=1.0; if (player.paused) {
    playButton4.style.background = 'linear-gradient( to right,transparent 83px,#e77d19 83px, #e77d19 86px, transparent 86px, transparent 174px, #e77d19 174px, #e77d19 177px, transparent 177px ), url(\'https://via.placeholder.com/266x266\')';
        playButton4.style.boxShadow='inset 0 0 0 3px #e77d19';
        playButton4.style.border='none';
        playButton4.style.backgroundRepeat = 'no-repeat';
        playButton4.style.backgroundPosition = 'center'; 
        document.querySelector('#playButton4 .pause').style.display='inline-block';
        player.play();
        } else {
    playButton4.style.background = 'linear-gradient( to right,transparent 83px,#e77d19 83px, #e77d19 86px, transparent 86px, transparent 174px, #e77d19 174px, #e77d19 177px, transparent 177px ), url(\'https://via.placeholder.com/266x266\')';
        playButton4.style.boxShadow='inset 0 0 0 3px #e77d19';
        playButton4.style.border='none';
        playButton4.style.backgroundRepeat = 'no-repeat';
        playButton4.style.backgroundPosition = 'center'; 
        document.querySelector('#playButton4 .play').style.display='inline-block';
        player.pause();
        }">
    
      <svg class="initial" width="90" height="108" viewbox="0 -3 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>
    
      <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="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>
    
    </button>
    
    <audio id="player4" style="display:none;">
      <source src='' type='audio/mpeg'></source>
    </audio>

Answer 1

如果在嵌套在其中的东西上指定cursor：pointer，那将是多余的。这应该足够了（取决于您使用光标样式显示的元素的子元素的单独样式）。

如果嵌套在顶部元素下面的东西覆盖了它，你只需要添加另一个指针样式。

附注：

在为onClick添加样式时，何时足够？

1 个答案: