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src/vendor/Export2Excel.js

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+/* eslint-disable */
+require('script-loader!file-saver');
+require('script-loader!vendor/Blob');
+require('script-loader!xlsx/dist/xlsx.core.min');
+function generateArray(table) {
+    var out = [];
+    var rows = table.querySelectorAll('tr');
+    var ranges = [];
+    for (var R = 0; R < rows.length; ++R) {
+        var outRow = [];
+        var row = rows[R];
+        var columns = row.querySelectorAll('td');
+        for (var C = 0; C < columns.length; ++C) {
+            var cell = columns[C];
+            var colspan = cell.getAttribute('colspan');
+            var rowspan = cell.getAttribute('rowspan');
+            var cellValue = cell.innerText;
+            if (cellValue !== "" && cellValue == +cellValue) cellValue = +cellValue;
+
+            //Skip ranges
+            ranges.forEach(function (range) {
+                if (R >= range.s.r && R <= range.e.r && outRow.length >= range.s.c && outRow.length <= range.e.c) {
+                    for (var i = 0; i <= range.e.c - range.s.c; ++i) outRow.push(null);
+                }
+            });
+
+            //Handle Row Span
+            if (rowspan || colspan) {
+                rowspan = rowspan || 1;
+                colspan = colspan || 1;
+                ranges.push({s: {r: R, c: outRow.length}, e: {r: R + rowspan - 1, c: outRow.length + colspan - 1}});
+            }
+            ;
+
+            //Handle Value
+            outRow.push(cellValue !== "" ? cellValue : null);
+
+            //Handle Colspan
+            if (colspan) for (var k = 0; k < colspan - 1; ++k) outRow.push(null);
+        }
+        out.push(outRow);
+    }
+    return [out, ranges];
+};
+
+function datenum(v, date1904) {
+    if (date1904) v += 1462;
+    var epoch = Date.parse(v);
+    return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
+}
+
+function sheet_from_array_of_arrays(data, opts) {
+    var ws = {};
+    var range = {s: {c: 10000000, r: 10000000}, e: {c: 0, r: 0}};
+    for (var R = 0; R != data.length; ++R) {
+        for (var C = 0; C != data[R].length; ++C) {
+            if (range.s.r > R) range.s.r = R;
+            if (range.s.c > C) range.s.c = C;
+            if (range.e.r < R) range.e.r = R;
+            if (range.e.c < C) range.e.c = C;
+            var cell = {v: data[R][C]};
+            if (cell.v == null) continue;
+            var cell_ref = XLSX.utils.encode_cell({c: C, r: R});
+
+            if (typeof cell.v === 'number') cell.t = 'n';
+            else if (typeof cell.v === 'boolean') cell.t = 'b';
+            else if (cell.v instanceof Date) {
+                cell.t = 'n';
+                cell.z = XLSX.SSF._table[14];
+                cell.v = datenum(cell.v);
+            }
+            else cell.t = 's';
+
+            ws[cell_ref] = cell;
+        }
+    }
+    if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);
+    return ws;
+}
+
+function Workbook() {
+    if (!(this instanceof Workbook)) return new Workbook();
+    this.SheetNames = [];
+    this.Sheets = {};
+}
+
+function s2ab(s) {
+    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;
+}
+
+export function export_table_to_excel(id) {
+    var theTable = document.getElementById(id);
+    console.log('a')
+    var oo = generateArray(theTable);
+    var ranges = oo[1];
+
+    /* original data */
+    var data = oo[0];
+    var ws_name = "SheetJS";
+    console.log(data);
+
+    var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);
+
+    /* add ranges to worksheet */
+    // ws['!cols'] = ['apple', 'banan'];
+    ws['!merges'] = ranges;
+
+    /* add worksheet to workbook */
+    wb.SheetNames.push(ws_name);
+    wb.Sheets[ws_name] = ws;
+
+    var wbout = XLSX.write(wb, {bookType: 'xlsx', bookSST: false, type: 'binary'});
+
+    saveAs(new Blob([s2ab(wbout)], {type: "application/octet-stream"}), "test.xlsx")
+}
+
+function formatJson(jsonData) {
+    console.log(jsonData)
+}
+export function export_json_to_excel(th, jsonData, defaultTitle) {
+
+    /* original data */
+
+    var data = jsonData;
+    data.unshift(th);
+    var ws_name = "SheetJS";
+
+    var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);
+
+
+    /* add worksheet to workbook */
+    wb.SheetNames.push(ws_name);
+    wb.Sheets[ws_name] = ws;
+
+    var wbout = XLSX.write(wb, {bookType: 'xlsx', bookSST: false, type: 'binary'});
+    var title = defaultTitle || '列表'
+    saveAs(new Blob([s2ab(wbout)], {type: "application/octet-stream"}), title + ".xlsx")
+}