# 原生js导出json为excel的三种方式
# 通过table标签转换excel
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<meta charset="utf-8" />
<style>
/* 此样式仅用于浏览器页面效果，Excel不会分离表格边框，不需要此样式 */
table {
border-collapse: collapse;
}
</style>
</head>
<body>
<!-- 设置border="1"以显示表格框线 -->
<table border="1">
<!-- caption元素可以生成表标题，其单元格列跨度为表格的列数 -->
<caption>学生成绩表</caption>
<tr>
<!-- 可以使用rowspan和colspan来合并单元格 -->
<th rowspan="2">编号</th>
<th rowspan="2">学号</th>
<th rowspan="2">姓名</th>
<th rowspan="2">性别</th>
<th rowspan="2">年龄</th>
<th colspan="3">成绩</th>
</tr>
<tr>
<th>语文</th>
<th>数学</th>
<th>英语</th>
</tr>
<tr>
<td>1</td>
<td>2016001</td>
<td>张三</td>
<td>男</td>
<td>13</td>
<td>85</td>
<td>94</td>
<td>77</td>
</tr>
<tr>
<td>2</td>
<td>2016002</td>
<td>李四</td>
<td>女</td>
<td>12</td>
<td>96</td>
<td>84</td>
<td>89</td>
</tr>
</table>
<a>导出表格</a>
<script>
// 使用outerHTML属性获取整个table元素的HTML代码（包括<table>标签），然后包装成一个完整的HTML文档，设置charset为urf-8以防止中文乱码
var html = "<html><head><meta charset='utf-8' /></head><body>" + document.getElementsByTagName("table")[0].outerHTML + "</body></html>";
// 实例化一个Blob对象，其构造函数的第一个参数是包含文件内容的数组，第二个参数是包含文件类型属性的对象
var blob = new Blob([html], { type: "application/vnd.ms-excel" });
var a = document.getElementsByTagName("a")[0];
// 利用URL.createObjectURL()方法为a元素生成blob URL
a.href = URL.createObjectURL(blob);
// 设置文件名，目前只有Chrome和FireFox支持此属性
a.download = "学生成绩表.xls";
</script>
</body>
</html>
# 导出json到excel
- 采用拼接table的HTML代码方式
封装生成excel函数
function exportExcel(JSONData, FileName, title, filter) {
if (!JSONData) return;
//转化json为object
var arrData = typeof JSONData != "object" ? JSON.parse(JSONData) : JSONData;
var excel = "<table>";
//设置表头
var row = "<tr>";
if (title) { //使用标题项
for (var i in title) {
row += "<th align='center'>" + title[i] + "</th>";
}
} else {//不使用标题项
for (var i in arrData[0]) {
row += "<th align='center'>" + i + "</th>";
}
}
excel += row + "</tr>";
//设置数据
for (var i = 0; i < arrData.length; i++) {
var row = "<tr>";
for (var index in arrData[i]) {
//判断是否有过滤行
if (filter) {
if (filter.indexOf(index) == -1) {
var value = arrData[i][index] == null ? "" : arrData[i][index];
row += "<td>" + value + "</td>";
}
} else {
var value = arrData[i][index] == null ? "" : arrData[i][index];
row += "<td align='center'>" + value + "</td>";
}
}
excel += row + "</tr>";
}
excel += "</table>";
var excelFile =
"<html xmlns:o='urn:schemas-microsoft-com:office:office' xmlns:x='urn:schemas-microsoft-com:office:excel' xmlns='http://www.w3.org/TR/REC-html40'>";
excelFile +=
'<meta http-equiv="content-type" content="application/vnd.ms-excel; charset=UTF-8">';
excelFile +=
'<meta http-equiv="content-type" content="application/vnd.ms-excel';
excelFile += '; charset=UTF-8">';
excelFile += "<head>";
excelFile += "<!--[if gte mso 9]>";
excelFile += "<xml>";
excelFile += "<x:ExcelWorkbook>";
excelFile += "<x:ExcelWorksheets>";
excelFile += "<x:ExcelWorksheet>";
excelFile += "<x:Name>";
excelFile += "{worksheet}";
excelFile += "</x:Name>";
excelFile += "<x:WorksheetOptions>";
excelFile += "<x:DisplayGridlines/>";
excelFile += "</x:WorksheetOptions>";
excelFile += "</x:ExcelWorksheet>";
excelFile += "</x:ExcelWorksheets>";
excelFile += "</x:ExcelWorkbook>";
excelFile += "</xml>";
excelFile += "<![endif]-->";
excelFile += "</head>";
excelFile += "<body>";
excelFile += excel;
excelFile += "</body>";
excelFile += "</html>";
var uri =
"data:application/vnd.ms-excel;charset=utf-8," +
encodeURIComponent(excelFile);
var link = document.createElement("a");
link.href = uri;
link.style = "visibility:hidden";
link.download = FileName + ".xls";
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
# 使用封装函数生成excel
<script src="./excelExport.js"></script>
<script>
const jsonData = [
{
name:'路人甲',
phone:'123456',
email:'123@123456.com',
bool:true
},
{
name:'炮灰乙',
phone:'123456',
email:'123@123456.com',
bool:false
},
{
name:'土匪丙',
phone:'123456',
email:'123@123456.com',
bool:true
},
{
name:'流氓丁',
phone:'123456',
email:'123@123456.com',
bool:false
},
]
function excelExportFn(){
let title = ['姓名','电话','邮箱'];
let filter = []; // 不导出的字段
exportExcel(jsonData,'测试excel',title,filter);
}
</script>
# 导出csv文件
function tableToExcel(){
const jsonData = [
{
name:'路人甲',
phone:'123456',
email:'123@123456.com'
},
{
name:'炮灰乙',
phone:'123456',
email:'123@123456.com'
},
{
name:'土匪丙',
phone:'123456',
email:'123@123456.com'
},
{
name:'流氓丁',
phone:'123456',
email:'123@123456.com'
},
]
//列标题，逗号隔开，每一个逗号就是隔开一个单元格
let str = `姓名,电话,邮箱\n`;
//增加\t为了不让表格显示科学计数法或者其他格式
for(let i = 0 ; i < jsonData.length ; i++ ){
for(let item in jsonData[i]){
str+=`${jsonData[i][item] + '\t'},`;
}
str+='\n';
}
//encodeURIComponent解决中文乱码
let uri = 'data:text/csv;charset=utf-8,\ufeff' + encodeURIComponent(str);
//通过创建a标签实现
let link = document.createElement("a");
link.href = uri;
//对下载的文件命名
link.download = "json数据表.csv";
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
参考文章： 原生js导出json为excel的三种方式
