用React加CSS3实现微信拆红包动画效果

微信红包曾经引爆过一系列的营销热潮，相信大家对于这种红包形式并不陌生，这里本着娱乐至上的精神用react简单地实现了拆红包的动画效果，供大家一起交流学习

用css3绘制红包

.redpack {
  height: 450px;
  background: #a5423a;
  width: 300px;
  left: 0;
  top: 0;
  border-radius: 10px;
  margin: 0 auto;
}
.topcontent {
    height: 300px;
    border: 1px solid #bd503a;
    background-color: #bd503a;
    border-radius: 10px 10px 50% 50% / 10px 10px 15% 15%;
    box-shadow: 0px 4px 0px -1px rgba(0,0,0,0.2);
}
#redpack-open {
    width: 100px;
    height: 100px;
    border: 1px solid #ffa73a;
    background-color: #ffa73a;
    border-radius: 50%;
    color: #fff;
    font-size: 20px;
    display: inline-block;
    margin-top: -50px;
    box-shadow: 0px 4px 0px 0px rgba(0, 0, 0, 0.2);
}

<div class='redpack'>
  <!--  红包的顶部盖子 -->
  <div class="topcontent"></div>
  <!-- 拆红包的按钮 -->
  <div id="redpack-open"></div>
</div>

效果如图：

用react来区分不同的状态的转换

用react.js来实现的话，主要通过判断state来控制红包现在是等待拆开还是已经拆开过，具体的代码如下

import react from 'react';

class readpacket extends react.component {
    constructor(props) {
        super(props);
        this.state = {
            animation: false,
            status: 0  // 0: 等待拆开 1: 拆开后
        };
    }

    render() {
        var bonus = this.props.thanks ? 0 : parsefloat(this.props.surveyinfo.bonus);

        if(this.state.status == 0) {
            return (
                <div classname='redpack-container' id='redpack-container'>
                    <div classname='redpack'>
                        <div classname='topcontent'>
                            <div id='redpack-opened'>
                              <div classname='redpack-avatar'>
                                <img src='http://placehold.it/80x80' alt='头像' width='80' height='80'/>
                              </div>
                            </div>
                            <h2 style={{margintop: 80, color: 'white'}}>奖励</h2>
                            <span classname='redpack-text'>点击下方按钮领取红包</span>
                            <div classname='redpack-description white-text'>恭喜发财 大吉大利</div>
                        </div>

                        <div id='redpack-open' classname={this.state.animation ? 'rotate' : ''}
                             onclick={this.openredpacket.bind(this)}
                        >
                            <span>拆红包</span>
                        </div>
                    </div>
                </div>
            );
        } else if (bonus == 0) {
            // 谢谢参与
            return (
                <div classname='redpack-container' id='redpack-container'>
                    <div classname='redpack'>
                        <div classname='topcontent-open'>
                            <div classname='redpack-avatar'>
                                <span id='close'></span>
                            </div>
                            <h1 style={{margintop: 180, color: 'white'}}> 谢谢参与 </h1>
                            <span classname='redpack-text'>多多参与的奖励的机会更多哦</span>
                            <br/>
                            <a onclick={this._towallet.bind(this)}
                               style={{cursor:'pointer',textdecoration: 'underline', color: 'white'}}>
                                去我的账户查看
                            </a>
                        </div>

                        <div id='redpack-opened'>
                          <div classname='redpack-avatar'>
                            <img src='http://placehold.it/80x80' alt='头像' width='80' height='80'/>
                          </div>
                        </div>
                    </div>
                </div>
            );
        } else {
            // 显示奖励金额
            return (
                <div classname='redpack-container' id='redpack-container'>
                    <div classname='redpack'>
                        <div classname='topcontent-open'>
                            <div classname='redpack-avatar'>
                                <span id='close'></span>
                            </div>
                            <h1 classname='white-text' style={{margintop: 180}}> {bonus.tofixed(2)} </h1>
                            <span classname='redpack-text'>奖励积分已经存入您的账户</span>
                            <a classname='btn-flat white-text' onclick={this._towallet.bind(this)}
                               style={{textdecoration: 'underline'}}>
                                去我的账户查看积分
                            </a>
                        </div>

                        <div id='redpack-opened'>
                          <div classname='redpack-avatar'>
                            <img src='http://placehold.it/80x80' alt='头像' width='80' height='80'/>
                          </div>
                        </div>
                    </div>
                </div>
            );
        }
    }

    stopanimation() {
        this.setstate({animation: false});
    }

    showresult() {
        this.setstate({status: 1});
    }

    openredpacket() {
        this.setstate({animation: true});
        settimeout(this.stopanimation.bind(this), 3000);
        settimeout(this.showresult.bind(this), 4000);
    }

    _towallet() {
      // 跳转到钱包
      window.location.hash = '/wallet';
    }
}

export default readpacket;

demo下载地址：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。