js导出页面数据

function exportTableToCSV(filename) {
    var csv = [];
    var rows = document.querySelectorAll("table tr");
    
    for (var i = 0; i < rows.length; i++) {
        var row = [], cols = rows[i].querySelectorAll("td, th");
        
        for (var j = 0; j < cols.length; j++) 
            row.push(cols[j].innerText);
        
        csv.push(row.join(","));        
    }

    // 创建Blob对象
    var blob = new Blob([csv.join("\n")], {type: "text/csv;charset=utf-8;"});
    
    // 创建下载链接
    var link = document.createElement("a");
    if (link.download !== undefined) { // feature detection
        var url = URL.createObjectURL(blob);
        link.setAttribute("href", url);
        link.setAttribute("download", filename);
        link.style.visibility = 'hidden';
        document.body.appendChild(link);
        link.click();
        document.body.removeChild(link);
    }
}

// 使用示例
document.getElementById("exportButton").addEventListener("click", function(){
    exportTableToCSV('table-data.csv');
});