导出函数

1. 导出CSS文件

function loadCSS(src){
    var d = $.Deferred();
    var link = document.createElement('link');
    link.type = 'text/css';
    link.rel = 'stylesheet';
    link.onload = function() {
        link.onload = null;
        d.resolve(link.href);
    }
    link.href = src;
    document.head.appendChild(link);

    return d;
}

2. 导出CSV

function exportCSV(data, headers, fileName, otherData){
        let other = '';
    if (otherData) {
        otherData.forEach(item => {
            other += item.name + ',' + item.val + '\n';
        });
        other += '\n';
    }
    headers = other + headers.join(',') + '\n';
    let content = '';
    data.forEach(item => {
        let keys = Object.keys(item);
        keys.forEach((key, index) => {
            let val = item[key];
                        // 以防字段出现","时导致下载格式错乱
            if(String(val).indexOf(',') != -1){
                val = '"' + val + '"';
                          }
                      // 每列用","隔开；
            content += val + (index != keys.length - 1 ? ',' : '');
        });
              // 每行用'\n'隔开
        content += '\n';
    });
    let a = document.createElement('a');
    let str = encodeURIComponent(headers + content); // 对"\n"进行转义
    a.href = 'data:text/csv;charset=utf-8,\ufeff' + str;  // \ufeff解决中文乱码
    a.download = download;
    document.body.appendChild(a);
    a.click();
        document.body.removeChild(a);
}

3.复制文本