vue 导出到excel

安装 npm install file-saver xlsx --save-dev

import FileSaver from "file-saver";
import XLSX from 'xlsx'

 1 //设置excel行高列宽
 2     auto_width (ws, data) {
 3       /*set worksheet max width per col*/
 4       const colWidth = data.map(row =>
 5         row.map(val => {
 6           /*if null/undefined*/
 7           return {
 8             wch: 18
 9           };
10         })
11       );
12       /*start in the first row*/
13       let resultc = colWidth[0];
14       for (let i = 1; i < colWidth.length; i++) {
15         for (let j = 0; j < colWidth[i].length; j++) {
16           if (resultc[j]["wch"] < colWidth[i][j]["wch"]) {
17             resultc[j]["wch"] = colWidth[i][j]["wch"];
18           }
19         }
20       }
21       ws["!cols"] = resultc;
22       const rowHeight = data.map(row => {
23         return {
24           hpt: 15
25         };
26       });
27       ws["!rows"] = rowHeight;
28     },
29     formatJson (filterVal, jsonData) {
30       return jsonData.map(v => filterVal.map(j => v[j]))
31     },
32     savetoExcel () {
33       //excel数据导出
34       let _ = this
35       _.getalldataList()
36       const tHeader = ['ID', '型号', '类型'];
37       const filterVal = ['id', 'Model', 'Type'];
38       const list = _.alldataList42       const data = _.formatJson(filterVal, list);
43       data.unshift(tHeader);
44       var ws_name = "列表"; //sheetname
45 
46       var wb = XLSX.utils.book_new(),
47         ws = XLSX.utils.json_to_sheet(data);
48       _.auto_width(ws, data);
49       /* add worksheet to workbook */
50       wb.SheetNames.push(ws_name);
51       wb.Sheets[ws_name] = ws;
52 
53       const s2ab = s => {
54         if (typeof ArrayBuffer !== 'undefined') {
55           var buf = new ArrayBuffer(s.length)
56           var view = new Uint8Array(buf)
57           for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xff
58           return buf
59         } else {
60           var buf = new Array(s.length);
61           for (var i = 0; i != s.length; ++i) buf[i] = s.charCodeAt(i) & 0xFF;
62           return buf;
63         }
64       }
65 
66       var wbout = XLSX.write(wb, {
67         bookType: "xlsx",
68         bookSST: false,
69         type: "binary"
70       });
71       var title = "列表";
72       FileSaver.saveAs(
73         new Blob([s2ab(wbout)], { type: "application/octet-stream" }),
74         title + ".xlsx"
75       );
76     },