JavaScript导出Excel的代码示例

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<script crossorigin="anonymous" integrity="sha384-m/TzZt0ykrLNcWKIbWS5Ki26N6AvwYe1BnqHriftAK8tohV7lhiLyXwUI3C8YdOD" src="https://lib.baomitu.com/xlsx/0.14.1/xlsx.full.min.js">
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function saveAs(obj, fileName) {//当然可以自定义简单的下载文件实现方式
 var tmpa = document.createElement("a");
 tmpa.download = fileName || "下载";
 tmpa.href = URL.createObjectURL(obj); //绑定a标签
 tmpa.click(); //模拟点击实现下载
 setTimeout(function () { //延时释放
 URL.revokeObjectURL(obj); //用URL.revokeObjectURL()来释放这个object URL
 }, 100);
 }
 const wopts = { bookType: 'xlsx', bookSST: false, type: 'binary' };//这里的数据是用来定义导出的格式类型
 // const wopts = { bookType: 'csv', bookSST: false, type: 'binary' };//ods格式
 // const wopts = { bookType: 'ods', bookSST: false, type: 'binary' };//ods格式
 // const wopts = { bookType: 'xlsb', bookSST: false, type: 'binary' };//xlsb格式
 // const wopts = { bookType: 'fods', bookSST: false, type: 'binary' };//fods格式
 // const wopts = { bookType: 'biff2', bookSST: false, type: 'binary' };//xls格式

 function downloadExl(data, name) {
 const wb = { SheetNames: ['Sheet1'], Sheets: {}, Props: {} };
 wb.Sheets['Sheet1'] = XLSX.utils.json_to_sheet(data);//通过json_to_sheet转成单页(Sheet)数据
 saveAs(new Blob([s2ab(XLSX.write(wb, wopts))], { type: "application/octet-stream" }), name + '.' + (wopts.bookType=="biff2"?"xls":wopts.bookType));
 }
 function s2ab(s) {
 if (typeof ArrayBuffer !== 'undefined') {
 var buf = new ArrayBuffer(s.length);
 var view = new Uint8Array(buf);
 for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
 return buf;
 } else {
 var buf = new Array(s.length);
 for (var i = 0; i != s.length; ++i) buf[i] = s.charCodeAt(i) & 0xFF;
 return buf;
 }
 }
 function downloadXLSById(idName,fileName){
 var title = new Array();

 $(`#${idName} table thead tr th`).each(function(i,v){
 title.push(v.textContent);
 });

 var jsonData = [];
 $("#"+idName+" table tbody tr").each(function(i,v){
 var data = {};
 v.childNodes.forEach(function(value,index){
 data[title[index]] = $.trim(value.textContent);
 });
 jsonData.push(data);
 });
 downloadExl(jsonData,fileName);
 }