最近在做一个导入导出Excel的功能，导出其他类型的文件都比较熟悉，但是导入跟导出一个Excel还是稍微特殊点。根据这次的经验，写了个导出的小样例。
总体思路就是json数据的key，value跟Excel的行列转换，还有就是解决数据在Excel表格中存放的位置，区域问题。
这里要用到的两个小插件，一个是xslx.js，一个是FileSaver.js，前者是来处理生成Excel的，后者是用来把文件下载保存到本地的。
下载地址：
https://github.com/eligrey/FileSaver.js
https://github.com/SheetJS/js-xlsx/tree/028d7010a516383cb9a2fdd0f0a919392e77600a/demos/angular
1 <!DOCTYPE html> 2 <html> 3 ?4 <head> 5 ????<meta charset="UTF-8"> 6 ????<title>导出生成excel</title> 7 ????<script src="js/xlsx.full.min.js"></script> 8 ????<script src="js/FileSaver.min.js"></script> 9 </head>10 11 <body>12 ????<button onclick="downloadExl(students)">导出</button>13 ????<script>14 ????????var students = [{15 ????????????"name": "小明1",16 ????????????"age": "6",17 ????????????"sex": "男",18 ????????????"height": "60"19 ????????}, {20 ????????????"name": "小明2",21 ????????????"age": "7",22 ????????????"sex": "男",23 ????????????"height": "70"24 ????????}, {25 ????????????"name": "小明3",26 ????????????"age": "8",27 ????????????"sex": "男",28 ????????????"height": "80"29 ????????}];30 ????????function downloadExl(data, type) {31 32 ????????????var keys = Object.keys(data[0]);33 ????????????var firstRow = {};34 ????????????keys.forEach(function (item) {35 ????????????????firstRow[item] = item;36 ????????????});37 ????????????data.unshift(firstRow);38 39 ????????????var content = {};40 41 ????????????// 把json格式的数据转为excel的行列形式42 ????????????var sheetsData = data.map(function (item, rowIndex) {43 ????????????????return keys.map(function (key, columnIndex) {44 ????????????????????return Object.assign({}, {45 ????????????????????????value: item[key],46 ????????????????????????position: (columnIndex > 25 ? getCharCol(columnIndex) : String.fromCharCode(65 + columnIndex)) + (rowIndex + 1),47 ????????????????????});48 ????????????????});49 ????????????}).reduce(function (prev, next) {50 ????????????????return prev.concat(next);51 ????????????});52 53 ????????????sheetsData.forEach(function (item, index) {54 ????????????????content[item.position] = { v: item.value };55 ????????????});56 57 ????????????//设置区域,比如表格从A1到D10,SheetNames:标题，58 ????????????var coordinate = Object.keys(content);59 ????????????var workBook = {60 ????????????????SheetNames: ["helloSheet"],61 ????????????????Sheets: {62 ????????????????????"helloSheet": Object.assign({}, content, { "!ref": coordinate[0] + ":" + coordinate[coordinate.length - 1] }),63 ????????????????}64 ????????????};65 ????????????//这里的数据是用来定义导出的格式类型66 ????????????var excelData = XLSX.write(workBook, { bookType: "xlsx", bookSST: false, type: "binary" });67 ????????????var blob = new Blob([string2ArrayBuffer(excelData)], { type: "" });68 ????????????saveAs(blob, "hello.xlsx");69 ????????}70 ????????//字符串转字符流71 ????????function string2ArrayBuffer(s) {72 ????????????var buf = new ArrayBuffer(s.length);73 ????????????var view = new Uint8Array(buf);74 ????????????for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;75 ????????????return buf;76 ????????}77 ????????// 将指定的自然数转换为26进制表示。映射关系：[0-25] -> [A-Z]。78 ????????function getCharCol(n) {79 ????????????let temCol = "",80 ????????????????s = "",81 ????????????????m = 082 ????????????while (n > 0) {83 ????????????????m = n % 26 + 184 ????????????????s = String.fromCharCode(m + 64) + s85 ????????????????n = (n - m) / 2686 ????????????}87 ????????????return s88 ????????}89 ????</script>90 </body>91 92 </html>Json数据导出生成Excel
原文地址：http://www.cnblogs.com/absolute-child/p/8083129.html