javascript - 如何在 MouseOver 上对 CSS 动画汉堡包图标进行动画处理

Question

我在 http://elijahmanor.com/css-animated-hamburger-icon/ 有一个动画 CSS 汉堡包图标我想使用它，但我想通过悬停使用它来查看设置 ex(x)，当不悬停时将其设置为默认样式，即 3 行。但是即使我使用悬停功能我也做不到。

document.querySelector("#nav-toggle")
  .addEventListener("click", function() {
    this.classList.toggle("active");
  });

#nav-toggle {
  position: absolute;
  left: 50%;
  top: 50%;
}

#nav-toggle {
  cursor: pointer;
  padding: 10px 35px 16px 0px;
}

#nav-toggle span,
#nav-toggle span:before,
#nav-toggle span:after {
  cursor: pointer;
  border-radius: 1px;
  height: 5px;
  width: 35px;
  background: black;
  position: absolute;
  display: block;
  content: '';
}

#nav-toggle span:before {
  top: -10px;
}

#nav-toggle span:after {
  bottom: -10px;
}

#nav-toggle span,
#nav-toggle span:before,
#nav-toggle span:after {
  transition: all 500ms ease-in-out;
}

#nav-toggle.active span {
  background-color: transparent;
}

#nav-toggle.active span:before,
#nav-toggle.active span:after {
  top: 0;
}

#nav-toggle.active span:before {
  transform: rotate(45deg);
}

#nav-toggle.active span:after {
  transform: rotate(-45deg);
}

<a id="nav-toggle" href="#"><span></span></a>

Answer 1

您可以使用鼠标悬停功能来完成。

document.querySelector("#nav-toggle")
  .addEventListener("mouseover", function() {
    this.classList.toggle("active");
  });

#nav-toggle {
  position: absolute;
  left: 50%;
  top: 50%;
}

#nav-toggle {
  cursor: pointer;
  padding: 10px 35px 16px 0px;
}

#nav-toggle span,
#nav-toggle span:before,
#nav-toggle span:after {
  cursor: pointer;
  border-radius: 1px;
  height: 5px;
  width: 35px;
  background: black;
  position: absolute;
  display: block;
  content: '';
}

#nav-toggle span:before {
  top: -10px;
}

#nav-toggle span:after {
  bottom: -10px;
}

#nav-toggle span,
#nav-toggle span:before,
#nav-toggle span:after {
  transition: all 500ms ease-in-out;
}

#nav-toggle.active span {
  background-color: transparent;
}

#nav-toggle.active span:before,
#nav-toggle.active span:after {
  top: 0;
}

#nav-toggle.active span:before {
  transform: rotate(45deg);
}

#nav-toggle.active span:after {
  transform: rotate(-45deg);
}

<a id="nav-toggle" href="#"><span></span></a>