var TableDatas  = '数据源';
function getCSV(){

    if(this.TableDatas.length === 0){

        alert("没有数据呀呀呀呀！");

        return false;

    }

    const jsonData = {

        target: {

          header: ['是否有效', '区分', 'URL', '担当', '日期', '説明'],

          filter: ['url_flag', 'division', 'url_value', 'opt_user_nm', 'opt_datetime', 'url_note'],

          list: this.TableDatas

        }

    };

    this.exportMethod(jsonData);
}

function exportMethod(data) {

    const csvTitle = data.target.header;

    const csvFilter = data.target.filter;

    const csvList = data.target.list;

    const csvData = [];

    csvData.push('"' + csvTitle.join('","') + '"\n');

    for (let i = 0; i < csvList.length; i++) {

        const tmp = [];
　　　　　for (let j = 0; j < csvFilter.length; j++) {

        　　var d = csvList[i][csvFilter[j]];

        　　tmp.push(d);

    　　}

    　　csvData.push('"' + tmp.join('","') + '"\n');

     }

     // csv download

     const uri = 'data:text/csv;charset=utf-8,\ufeff' + encodeURIComponent(csvData.join(''));

     const link = document.createElement('a');

     link.href = uri;

     link.download = `text.csv`;

     document.body.appendChild(link);

     link.click();
}