如何在MouseOver上动画CSS动画汉堡图标

Question

我在http://elijahmanor.com/css-animated-hamburger-icon/有一个动画的CSS汉堡图标，我想要使用它，但我想通过悬停来查看set ex（x），当没有悬停时将其设置为默认值风格那3行。但即使我使用悬停功能，我也做不到。

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

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#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);
}

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

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Answer 1

您可以使用鼠标悬停功能来完成。

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

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#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);
}

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

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Answer 2

悬停事件称为mouseover。

  

事件名称是经典的HTML DOM Events，只是没有    on 前缀。例如，使用mouseover代替onmouseover。

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

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#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);
}

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

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Answer 3

您只需在脚本中使用mouseover代替hover。

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

Answer 4

您需要使用mouseover事件。

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

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#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);
}

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

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