js -- 搜索功能，对于搜索关键字高亮处理

js：

export const highlightKeyword = (str, key) => {
  if (!str) return '';
  let reg = new RegExp('(' + key + ')', 'gi');
  let newstr = str.replace(reg, '<em class="heightlight-kd">$1</em>');
  return newstr;
};

css：

.heightlight-kd {
    color: blue;
  }

html：

import { highlightKeyword } from 'common';
renderHighlightKeyword = field => {
    return <span dangerouslySetInnerHTML={{ __html: highlightKeyword(field, props.keyword) }}></span>;
  };

this.columns = [
      {
        title: '类型',
        dataIndex: 'name',
        key: 'name',
        render: this.renderHighlightKeyword,
      }]