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css - 带有 ReactJs 的圆形菜单

问题描述

我在 codepen 上发现了这个惊人的圆形菜单。链接：https ://codepen.io/juslwk/pen/xgbDB 。

我想将它用于 reactjs。我是一个完整的反应初学者。当我尝试复制代码以首先尝试时，没有出现圆形菜单。只是一堆导航列表项。此外，对于我的小型项目，我不需要按下按钮来使菜单像链接中那样显示。我希望带有中间按钮的整个菜单始终存在。所以我没有使用他们必须关闭和打开的 JS。

我复制了下面的 html 代码，并按原样使用 CSS：

class App extends React.Component {

  constructor (props){
     super(props)
  }
  
  render (){
      return (
        <div class="container">
            <div class="component">
              <h2>Hi</h2>
             
              <button class="cn-button" id="cn-button">Menu</button>
              <div class="cn-wrapper" id="cn-wrapper">
                <ul>
                  <li>
                    <a href="#">
                      <span>Home</span>
                     
                    </a>
                  </li>
                  <li><a href="#"><span>Furniture</span></a></li>
                  <li><a href="#"><span>Transport</span></a></li>
                  <li><a href="#"><span>Gift</span></a></li>
                  <li><a href="#"><span>Clothes</span></a></li>
                  <li><a href="#"><span>Games</span></a></li>
                  <li><a href="#"><span>Stationary</span></a></li>
                  <li><a href="#"><span>Toys</span></a></li>
                  <li><a href="#"><span>Books</span></a></li>
                  <li><a href="#"><span>Login</span></a></li>
                  <li><a href="#"><span>Register</span></a></li>
                  <li><a href="#"><span>Sell</span></a></li>
                </ul>
              </div>
            </div>
          </div>
      );
  }
}

ReactDOM.render(<App />,
document.getElementById("root"));
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.8.0/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.8.0/umd/react-dom.production.min.js"></script>
<div id="root"></div>

谢谢你的帮助。

标签： cssreactjs

解决方案

这是该沙盒项目的克隆。如果您不想使用按钮切换菜单，您需要做的就是opened-nav为您的 <div className="cn-wrapper opened-nav" id="cn-wrapper">元素添加一个类名。并且它应该始终保持打开状态，如果您选择将其保持为默认打开状态，那么只需删除下面组件上的状态管理即可。

这完全取决于您想要做什么，但克隆如下：

function MenuComponent() {

  const[menuOpen, setMenuOpen] = React.useState(false);
  const wrapper = document.getElementById("cn-wrapper");
  function toggleMenu()
  {
    setMenuOpen(!menuOpen); 
  }
  
  React.useEffect(()=>
  {
    if(wrapper) 
    {
      if(menuOpen)
        wrapper.classList.add("opened-nav");
      else
        wrapper.classList.remove("opened-nav");
    }
  },[menuOpen]);
  
  return (
    <div className="container csstransforms">
      <div className="component">
        <h2>Hi</h2>
        <button className="cn-button" onClick={toggleMenu} id="cn-button">Menu</button>
        <div className="cn-wrapper" id="cn-wrapper">
          <ul>
            <li>
              <a href="#">
                <span>Home</span>
              </a>
            </li>
            <li><a href="#"><span>Furniture</span></a></li>
            <li><a href="#"><span>Transport</span></a></li>
            <li><a href="#"><span>Gift</span></a></li>
            <li><a href="#"><span>Clothes</span></a></li>
            <li><a href="#"><span>Games</span></a></li>
            <li><a href="#"><span>Stationary</span></a></li>
            <li><a href="#"><span>Toys</span></a></li>
            <li><a href="#"><span>Books</span></a></li>
            <li><a href="#"><span>Login</span></a></li>
            <li><a href="#"><span>Register</span></a></li>
            <li><a href="#"><span>Sell</span></a></li>
          </ul>
        </div>
      </div>
    </div>
  );
}

ReactDOM.render(<MenuComponent />,
document.getElementById("root"));
@import url(https://fonts.googleapis.com/css?family=Lato:300,400,700);

* { 
  position: relative;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    list-style: none;
}

html,
body {
    height: 100%;
}

body {
    background: #52be7f;
    color: #fff;
}

.component {
    position: relative;
    margin-bottom: 3em;
    height: 15em;
    background: rgba(0,0,0,0.05);
    font-family: 'Lato', Arial, sans-serif;
}

.component > h2 {
    position: absolute;
    overflow: hidden;
    width: 100%;
    text-align: center;
    text-transform: uppercase;
    white-space: nowrap;
    font-weight: 300;
    font-style: italic;
    font-size: 12em;
    opacity: 0.1;
    cursor: default;
}

.cn-button {
    position: absolute;
    top: 100%;
    left: 50%;
    z-index: 11;
    margin-top: -2.25em;
    margin-left: -2.25em;
    padding-top: 0;
    width: 4.5em;
    height: 4.5em;
    border: none;
    border-radius: 50%;
    background: none;
    background-color: #fff;
    color: #52be7f;
    text-align: center;
    font-weight: 700;
    font-size: 1.5em;
    text-transform: uppercase;
    cursor: pointer;
    -webkit-backface-visibility: hidden;
}

.csstransforms .cn-wrapper {
    position: absolute;
    top: 100%;
    left: 50%;
    z-index: 10;
    margin-top: -13em;
    margin-left: -13.5em;
    width: 27em;
    height: 27em;
    border-radius: 50%;
    background: transparent;
    opacity: 0;
    -webkit-transition: all .3s ease 0.3s;
    -moz-transition: all .3s ease 0.3s;
    transition: all .3s ease 0.3s;
    -webkit-transform: scale(0.1);
    -ms-transform: scale(0.1);
    -moz-transform: scale(0.1);
    transform: scale(0.1);
    pointer-events: none;
    overflow: hidden;
}

/*cover to prevent extra space of anchors from being clickable*/
.csstransforms .cn-wrapper:after{
  content:".";
  display:block;
  font-size:2em;
  width:6.2em;
  height:6.2em;
  position: absolute;
  left: 50%;
  margin-left: -3.1em;
  top:50%;
  margin-top: -3.1em;
  border-radius: 50%;
  z-index:10;
  color: transparent;
}

.csstransforms .opened-nav {
    border-radius: 50%;
    opacity: 1;
    -webkit-transition: all .3s ease;
    -moz-transition: all .3s ease;
    transition: all .3s ease;
    -webkit-transform: scale(1);
    -moz-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
    pointer-events: auto;
}

.csstransforms .cn-wrapper li {
    position: absolute;
    top: 50%;
    left: 50%;
    overflow: hidden;
    margin-top: -1.3em;
    margin-left: -10em;
    width: 10em;
    height: 10em;
    font-size: 1.5em;
    -webkit-transition: all .3s ease;
    -moz-transition: all .3s ease;
    transition: all .3s ease;
    -webkit-transform: rotate(75deg) skew(62deg); 
    -moz-transform: rotate(75deg) skew(62deg); 
    -ms-transform: rotate(75deg) skew(62deg); 
    transform: rotate(75deg) skew(62deg); 
    -webkit-transform-origin: 100% 100%;
    -moz-transform-origin: 100% 100%;
    transform-origin: 100% 100%;
    pointer-events: none;
}

.csstransforms .cn-wrapper li a {
    position: absolute;

    right: -7.25em;
    bottom: -7.25em;
    display: block;
    width: 14.5em;
    height: 14.5em;
    border-radius: 50%;
    background: #429a67;
    background: -webkit-radial-gradient(transparent 35%, #429a67 35%);
    background: -moz-radial-gradient(transparent 35%, #429a67 35%);
    background: radial-gradient(transparent 35%, #429a67 35%);
    color: #fff;
    text-align: center;
    text-decoration: none;
    font-size: 1.2em;
    line-height: 2;
    -webkit-transform: skew(-62deg) rotate(-75deg) scale(1);
    -moz-transform: skew(-62deg) rotate(-75deg) scale(1);
    -ms-transform: skew(-62deg) rotate(-75deg) scale(1);
    transform: skew(-62deg) rotate(-75deg) scale(1);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    pointer-events: auto;
}

.csstransforms .cn-wrapper li a span {
    position: relative;
    top: 1em;
    display: block;
    font-size: .5em;
    font-weight: 700;
    text-transform: uppercase;
}

.csstransforms .cn-wrapper li a:hover,
.csstransforms .cn-wrapper li a:active,
.csstransforms .cn-wrapper li a:focus {
    background: -webkit-radial-gradient(transparent 35%, #449e6a 35%);
    background: -moz-radial-gradient(transparent 35%, #449e6a 35%);
    background: radial-gradient(transparent 35%, #449e6a 35%);
}

.csstransforms .opened-nav li {
    -webkit-transition: all .3s ease .3s;
    -moz-transition: all .3s ease .3s;
    transition: all .3s ease .3s;
}

.csstransforms .opened-nav li:first-child {
    -webkit-transform: skew(62deg);
    -moz-transform: skew(62deg);
    -ms-transform: skew(62deg);
    transform: skew(62deg); 
}

.csstransforms .opened-nav li:nth-child(2) {
    -webkit-transform: rotate(30deg) skew(62deg);
    -moz-transform: rotate(30deg) skew(62deg);
    -ms-transform: rotate(30deg) skew(62deg);
    transform: rotate(30deg) skew(62deg);
}

.csstransforms .opened-nav  li:nth-child(3) {
    -webkit-transform: rotate(60deg) skew(62deg);
    -moz-transform: rotate(60deg) skew(62deg);
    -ms-transform: rotate(60deg) skew(62deg);
    transform: rotate(60deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(4) {
    -webkit-transform: rotate(90deg) skew(62deg);
    -moz-transform: rotate(90deg) skew(62deg);
    -ms-transform: rotate(90deg) skew(62deg);
    transform: rotate(90deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(5) {
    -webkit-transform: rotate(120deg) skew(62deg);
    -moz-transform: rotate(120deg) skew(62deg);
    -ms-transform: rotate(120deg) skew(62deg);
    transform: rotate(120deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(6) {
    -webkit-transform: rotate(150deg) skew(62deg);
    -moz-transform: rotate(150deg) skew(62deg);
    -ms-transform: rotate(150deg) skew(62deg);
    transform: rotate(150deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(7) {
    -webkit-transform: rotate(180deg) skew(62deg);
    -moz-transform: rotate(180deg) skew(62deg);
    -ms-transform: rotate(180deg) skew(62deg);
    transform: rotate(180deg) skew(62deg);
}

.csstransforms .opened-nav li:nth-child(8) {
    -webkit-transform: rotate(210deg) skew(62deg);
    -moz-transform: rotate(210deg) skew(62deg);
    -ms-transform: rotate(210deg) skew(62deg);
    transform: rotate(210deg) skew(62deg);
}
.csstransforms .opened-nav li:nth-child(9) {
    -webkit-transform: rotate(240deg) skew(62deg);
    -moz-transform: rotate(240deg) skew(62deg);
    -ms-transform: rotate(240deg) skew(62deg);
    transform: rotate(240deg) skew(62deg);
}
.csstransforms .opened-nav li:nth-child(10) {
    -webkit-transform: rotate(270deg) skew(62deg);
    -moz-transform: rotate(270deg) skew(62deg);
    -ms-transform: rotate(270deg) skew(62deg);
    transform: rotate(270deg) skew(62deg);
}
.csstransforms .opened-nav li:nth-child(11) {
    -webkit-transform: rotate(300deg) skew(62deg);
    -moz-transform: rotate(300deg) skew(62deg);
    -ms-transform: rotate(300deg) skew(62deg);
    transform: rotate(300deg) skew(62deg);
}
.csstransforms .opened-nav li:nth-child(12) {
    -webkit-transform: rotate(330deg) skew(62deg);
    -moz-transform: rotate(330deg) skew(62deg);
    -ms-transform: rotate(330deg) skew(62deg);
    transform: rotate(330deg) skew(62deg);
}
.no-csstransforms .cn-wrapper {
    overflow: hidden;
    margin: 10em auto;
    padding: .5em;
    text-align: center;
}

.no-csstransforms .cn-wrapper ul {
    display: inline-block;
}

.no-csstransforms .cn-wrapper li {
    float: left;
    width: 5em;
    height: 5em;
    background-color: #fff;
    text-align: center;
    font-size: 1em;
    line-height: 5em;
}

.no-csstransforms .cn-wrapper li a {
    display: block;
    width: 100%;
    height: 100%;
    color: inherit;
    text-decoration: none;
}

.no-csstransforms .cn-wrapper li a:hover,
.no-csstransforms .cn-wrapper li a:active,
.no-csstransforms .cn-wrapper li a:focus {
    background-color: #f8f8f8;
}

.no-csstransforms .cn-wrapper li.active a{
    background-color: #6F325C;
    color: #fff;
}

.no-csstransforms .cn-button {
    display: none;
}

@media only screen and (max-width: 620px) {
    .no-csstransforms li {
        width: 4em;
        height: 4em;
        line-height: 4em;
    }
}

@media only screen and (max-width: 500px) {
    .no-ccstransforms .cn-wrapper {
        padding: .5em;
    }

    .no-csstransforms .cn-wrapper li {
        width: 4em;
        height: 4em;
        font-size: .9em;
        line-height: 4em;
    }
}

@media only screen and (max-width: 480px) {
    .csstransforms .cn-wrapper {
        font-size: .68em;
    }

    .cn-button {
        font-size: 1em;
    }
}

@media only screen and (max-width:420px) {
    .no-csstransforms .cn-wrapper li {
        width: 100%;
        height: 3em;
        line-height: 3em;
    }
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.8.0/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.8.0/umd/react-dom.production.min.js"></script>
<div id="root"></div>

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