Vue组件开发系列之Alert组件

wtDom代码请查看下面的链接：

https://www.jianshu.com/p/cb6b6fa1770a

import {wtDom} from '../common/utils';
/*
 * @params options {Object} 必须
*/
function Alert (params) {
  var defaults = {
    title: '',
    content: '',
    btns: [],
    zIndex: 100,
    ios: false // 是否是ios风格
  };
  var options = Object.assign(defaults, params);
  var Alert = wtDom.create('div');
  Alert.className = 'wt-Alert';
  if (options.ios) {
    Alert.className = 'wt-Alert wt-Alert-ios';
  }
  // 如果title不为空
  if (options.title !== '') {
    var title = wtDom.create();
    title.className = 'title';
    title.innerText = options.title;
    Alert.appendChild(title);
  }
  // 显示内容
  var content = wtDom.create();
  content.className = 'content';
  content.innerText = options.content;
  Alert.appendChild(content);
  // 显示btn
  var btns = wtDom.create();
  btns.className = 'wt-Alert-btns';
  options.btns.forEach((item, index) => {
    var btn = wtDom.create();
    btn.className = 'wt-Alert-btn';
    btn.innerText = item.text;
    btn.addEventListener('click', function () {
      wtDom.del(mask);
      wtDom.del(Alert);
      item.handle(index);
    });
    btns.appendChild(btn);
  });
  Alert.appendChild(btns);
  Alert.style.zIndex = options.zIndex + 1;
  // 添加Alert
  document.body.appendChild(Alert);
  // 遮罩层
  var mask = wtDom.create();
  mask.className = 'wt-alert-mask';
  mask.style.zIndex = options.zIndex;
  mask.addEventListener('click', function () {
    if (options.btns.length === 0 ) {
      wtDom.del(mask);
      wtDom.del(Alert);
    }
  });
  // 添加遮罩层
  document.body.appendChild(mask);
}
export default Alert;

css代码：

/* alert*/
.wt-alert-mask {
    position: fixed;
    background: rgba(0,0,0,0.3);
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}
.wt-Alert {
    width: 80%;
    background: #fff;
    z-index: 103;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 20px 0px #9b9b9b;
    box-sizing: border-box;
    padding: 0.5rem;
    .title {
      font-size: 0.8rem;
      overflow: hidden;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
  }
  .content {
    font-size: 0.7rem;
    color: #666;
    margin-top: 1rem;
  }
  .wt-Alert-btns {
    display: flex;
    color: #1BB5F1;
    font-size: 0.7rem;
    justify-content: flex-end;
    margin-top: 1rem;
    .wt-Alert-btn{
      padding: 0.3rem 0.5rem;
      &:active {
        background: #eee;
    }
    }
  }
  &.wt-Alert-ios {
    border-radius: 0.5rem;
    padding: 0;
    overflow: hidden;
    .title{
      margin: 1rem;
      margin-bottom: 0;
    }
    .content {
      margin-left: 1rem;
      margin-right: 1rem;
      margin-top: 1rem;
    }
    .wt-Alert-btns {
      position: relative;
      &:after {
        height: 1px;
        content: '';
        border-top: 1px solid #ccc;
        transform: scaleY(.5);
        display: block;
        position: absolute;
        top: 0;
        width: 100%;
      }
      .wt-Alert-btn {
        flex: 1;
        text-align: center;
        line-height: 2.2rem;
        height: 2.2rem;
        box-sizing: border-box;
        position: relative;
        align-items: center;
        display: flex;
        justify-content: center;
        font-size: 0.8rem;
        &:last-child {
          &:after {
            display: none;
          }
        }
        &:after {
          height: 100%;
          content: '';
          border-right: 1px solid #ccc;
          transform: scaleX(0.5);
          display: block;
          position: absolute;
          top: 1px;
          right: 0;
          width: 1px;
        }
      }
    }
  }
}