javascript - 逻辑非运算符 (!) 将类添加到错误按钮的问题

Question

我有一个按钮列表。当其中一个按钮被单击时，我希望为所有其他按钮提供一个 not-selected 类，这会将其文本的颜色更改为灰色并使指针事件:无

我正在使用点击处理程序，不确定我使用的感叹号 ! 是否正确，因为它不断将该类添加到我刚刚单击的按钮，而不是所有未单击的按钮点击。

$(".btn--list").on("click", function(){
    !($(this).addClass("not-selected"));
)};

<ul>
    <li><h2>Filters</h2></li>
    <li class="filter--all"><button class="btn--list btn--all is-selected">Select All</button></li>

    <li><h2>Decade</h2></li>
    <li><button class="btn--list btn--1960">1960s</button></li>
    <li><button class="btn--list btn--1970">1970s</button></li>
    <li><button class="btn--list btn--1980">1980s</button></li>
    <li><button class="btn--list btn--1990">1990s</button></li>
    <li><button class="btn--list btn--2000">2000s</button></li>
    <li><button class="btn--list btn--2010">2010s</button></li>

    <li><h2>Position</h2></li>
    <li><button class="btn--list btn--goalie">Goalie</button></li>
    <li><button class="btn--list btn--defencemen">Defenceman</button></li>
    <li><button class="btn--list btn--forward">Forward</button></li>

    <li><h2>Other</h2></li>
    <li><button class="btn--list btn--name">First Name</button></li>
    <li><button class="btn--list btn--hometown">Hometown</button></li>
    <li><button class="btn--list btn--gamesp">Games Played</button></li>
    <li class="not--goalie not--goals"><button class="btn--list btn--goals">Goals</button></li>
    <li class="not--goalie not-assists"><button class="btn--list btn--assists">Assists</button></li>
    <li class="not--goalie not-points"><button class="btn--list btn--points">Points</button></li>
    <li class="not--goalie not-penalty"><button class="btn--list btn--penalty">Penalty Minutes</button></li>
    <li><button class="btn--list btn--goalsagainst">Goals Against <span class="is-highlighted">*</span></button></li>
    <li><button class="btn--list btn--savepercent">Save Percentage <span class="is-highlighted">*</span></button></li>
    <li><button class="btn--list btn--shutouts">Shutouts <span class="is-highlighted">*</span></button></li>
</ul>

Answer 1

您在 jQuery 对象上使用 ! 运算符是无效的。要实现您的要求，您可以选择所有 .btn--list 元素，并使用 .not(this) 排除当前元素。试试这个:

$(".btn--list").on("click", function() {
    $(".btn--list").not(this).addClass("not-selected");
});

/* For demo purposes... */
.not-selected {
  background-color: #c00;
  pointer-events: none;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul>
  <li>
    <h2>Filters</h2>
  </li>
  <li class="filter--all">
    <button class="btn--list btn--all is-selected">Select All</button>
  </li>

  <li>
    <h2>Decade</h2>
  </li>
  <li>
    <button class="btn--list btn--1960">1960s</button>
  </li>
  <li>
    <button class="btn--list btn--1970">1970s</button>
  </li>
  <li>
    <button class="btn--list btn--1980">1980s</button>
  </li>
  <li>
    <button class="btn--list btn--1990">1990s</button>
  </li>
  <li>
    <button class="btn--list btn--2000">2000s</button>
  </li>
  <li>
    <button class="btn--list btn--2010">2010s</button>
  </li>

  <li>
    <h2>Position</h2>
  </li>
  <li>
    <button class="btn--list btn--goalie">Goalie</button>
  </li>
  <li>
    <button class="btn--list btn--defencemen">Defenceman</button>
  </li>
  <li>
    <button class="btn--list btn--forward">Forward</button>
  </li>

  <li>
    <h2>Other</h2>
  </li>
  <li>
    <button class="btn--list btn--name">First Name</button>
  </li>
  <li>
    <button class="btn--list btn--hometown">Hometown</button>
  </li>
  <li>
    <button class="btn--list btn--gamesp">Games Played</button>
  </li>
  <li class="not--goalie not--goals">
    <button class="btn--list btn--goals">Goals</button>
  </li>
  <li class="not--goalie not-assists">
    <button class="btn--list btn--assists">Assists</button>
  </li>
  <li class="not--goalie not-points">
    <button class="btn--list btn--points">Points</button>
  </li>
  <li class="not--goalie not-penalty">
    <button class="btn--list btn--penalty">Penalty Minutes</button>
  </li>
  <li>
    <button class="btn--list btn--goalsagainst">Goals Against <span class="is-highlighted">*</span>
    </button>
  </li>
  <li>
    <button class="btn--list btn--savepercent">Save Percentage <span class="is-highlighted">*</span>
    </button>
  </li>
  <li>
    <button class="btn--list btn--shutouts">Shutouts <span class="is-highlighted">*</span>
    </button>
  </li>
</ul>