var defaultOpts = {
        title: '',//标题
        content: '',//内容 文字 || html
        height: 50,//默认屏幕（父级）的50%
        width: 80,//默认屏幕（父级）的80%
        type: 'alert-default',//弹框类型
        effect: 'fadeIn',//出现效果，默认下跌落
        delayTime: 500,//效果延时时间，默认.5s
        autoClose: false,//自动关闭
        autoTime: 2000, //自动关闭时间默认2s
        autoEffect: 'default',//关闭效果
        ok: '确定',
        okCallback: function(){},//确定回调
        cancel: '取消',
        cancelCallback: function(){},//取消回调
        before : function() {
          console.log('before')
        }, 
        close: function() {
          console.log('close')
        },
        blankclose: false//空白处点击关闭
      }

    for (i in defaultOpts) {
      if (opts[i] === undefined) {
        opts[i] = defaultOpts[i]
      }
    }
　　
　　opts.before && opts.before()

var alertHtml = [
        '<section class="alert-main" id="alertMain">',
          '<div class="alert-mask li-opacity" id="alertMask"></div>',
          '<div class="alert-content '+ opts.type +'" id="alertContent">',
          opts.content +'</div>',
        '</section>'
      ]

    $('body').append(alertHtml.join(''))

var $alertContent = $('#alertContent'),
      $alertMain = $('#alertMain');

    $alertContent.css({
      'height': opts.height + '%',
      'top': (100 - opts.height)/2 + '%',
      'width': opts.width + '%',
      'left': (100 - opts.width)/2 + '%'
    })

    $('.li-opacity').css({
      '-webkit-animation-duration' : opts.delayTime/1000 + 's'
    })

var effect = {
      'fadeIn': 'top',
      'fadeInStart': '-100%',
      'fadeInValue': (100 - opts.height)/2 + '%',
      'sideLeft': 'left',
      'sideLeftStart': '-100%',
      'sideLeftValue': (100 - opts.width)/2 + '%',
      'scale': '-webkit-transform',
      'scaleStart': 'scale(0)',
      'scaleValue': 'scale(1)',
      'info': '-webkit-transform',
      'infoStart': 'scale(1.2)',
      'infoValue': 'scale(1)'
    }

    setTimeout(function(){
      $alertContent.css(effect[opts.effect],effect[opts.effect + 'Start']).addClass('alert-show')

      setTimeout(function(){
        $alertContent.css(effect[opts.effect], effect[opts.effect + 'Value'])
        opts.close && opts.close()
      },10)
    },opts.delayTime)

if(opts.blankclose) {
      $('.alert-main :not(.alert-content)').on('click',function(event){
        $alertMain.remove()
        opts.close && opts.close()
        event.stopPropagation()
        event.preventDefault()
      })
    }

if(opts.autoClose && opts.autoTime > 0) {
      setTimeout(function(){$alertMain.remove()},opts.autoTime)
      opts.close && opts.close()
    }

@-webkit-keyframes opacity {
      0% {
        opacity: 0; /*初始状态 透明度为0*/
      }
      50% {
        opacity: 0; /*中间状态 透明度为0*/
      }
      100% {
        opacity: 1; /*结尾状态 透明度为1*/
      }
    }

    .li-opacity {
      -webkit-animation-name: opacity; /*动画名称*/
      -webkit-animation-iteration-count: 1; /*动画次数*/
      -webkit-animation-delay: 0s; /*延迟时间*/
    }
    .alert-mask {
      position: fixed;
      height: 100%;
      width: 100%;
      left: 0%;
      top: 0%;
      z-index: 9998;
      background-color: rgba(0,0,0,.7);
    }
    .alert-content {
      position: fixed;
      box-sizing: border-box;
      border-radius: 4px;
      z-index: 9999;
      -webkit-transition: .4s;
      -moz-transition: .4s;
      transition: .4s;
      display: none;
    }
    .alert-show {
      display: block;
    }
    .alert-default {
      background-color: white;
    }

<p class="alert" data-flag="fadeIn">fadeIn</p>
<p class="alert" data-flag="sideLeft">sideLeft</p>
<p class="alert" data-flag="scale">scale</p>
<p class="alert" data-flag="info">info</p> 

require.config({
  jquery:'component/jquery/jquery-3.1.0.min',
  liAlert: 'li/li-alert',//常用弹框组件
})

require(['jquery'],function($){
    require(['liAlert'],function(){
      $('.alert').on('click',function(event){
        $.alert({
          content: '<h1 style="display:flex;justify-content:center;">我是弹框</h1>',
          effect: $(event.currentTarget).attr('data-flag'),
          blankclose: true,
          //autoClose: true
        })
      })
    })
  })