示例1： 利用blob动态导出字符串到excel：
<!DOCTYPE html>
<
html
lang=
"en">
<
head>
<
meta
charset=
"UTF-8">
<
meta
name=
"viewport"
content=
"width=device-width, initial-scale=1.0">
<
meta
http-equiv=
"X-UA-Compatible"
content=
"ie=edge">
<
title>Document</
title>
<
style
media=
"screen">
.tableA {
border-collapse:
collapse;
}
.tableA
.title
th {
height:
50
px;
font-size:
24
px;
font-family:
'微软雅黑';
font-weight:
700;
}
.tableA
tr
th {
border:
1
px
#000
solid;
height:
40
px;
background:
#efefef;
}
.tableA
tr
td {
padding:
0
40
px;
border:
1
px
#000
solid;
height:
40
px;
text-align:
center;
}
.tableA
.footer
td {
font-size:
20
px;
font-weight:
700;
}
</
style>
</
head>
<
body>
<
table
bordercolor=
"black"
class=
"tableA">
<
tr
class=
"title">
<
th
colspan=
"4">学生信息</
th>
</
tr>
<
tr>
<
th>名字</
th>
<
th>性别</
th>
<
th>年龄</
th>
<
th>班级</
th>
</
tr>
<
tr>
<
td>小明</
td>
<
td>男</
td>
<
td>19</
td>
<
td>1班</
td>
</
tr>
<
tr>
<
td>小黄</
td>
<
td>男</
td>
<
td>20</
td>
<
td>2班</
td>
</
tr>
<
tr>
<
td>老王</
td>
<
td>男</
td>
<
td>29</
td>
<
td>3班</
td>
</
tr>
<
tr
class=
"footer">
<
td
colspan=
"4">总人数：3人</
td>
</
tr>
</
table>
<
script>
var oHtml
= document.
getElementsByClassName(
'tableA')[
0].outerHTML;
var excelHtml
=
`
<html>
<head>
<meta charset='utf-8' />
<style>
.tableA {
border-collapse: collapse;
}
.tableA .title th{
height: 50px;
font-size: 24px;
font-family: '微软雅黑';
font-weight: 700;
}
.tableA tr th {
border: 1px #000 solid;
height: 40px;
background: #efefef;
}
.tableA tr td {
padding: 0 40px;
border: 1px #000 solid;
height: 40px;
text-align: center;
}
.tableA .footer td {
font-size: 20px;
font-weight: 700;
}
</style>
</head>
<body>
${oHtml
}
</body>
</html>
`;
var debug
= { hello:
"world" };
// var blob = new Blob([JSON.stringify(debug, null, 2)],
// { type: 'application/json' });
var excelBlob
=
new
Blob([excelHtml], { type:
'application/vnd.ms-excel' })
// 创建一个a标签
var oA
= document.
createElement(
'a');
// 利用URL.createObjectURL()方法为a元素生成blob URL
oA.href
= URL.
createObjectURL(excelBlob);
// 给文件命名
oA.download
=
'学生名单.xls';
// 模拟点击
oA.
click();
</
script>
</
body>
</
html>
示例2：
<
script>
var content1
=
"hhh1";
var content2
=
"23332";
var blob
=
new
Blob([content1,content2],{type:
"text/plain"});
var url
= URL.
createObjectURL(blob);
var aEle
= document.
createElement(
"a");
var btn
= document.
querySelector(
"button");
btn.
onclick
=
function (
param) {
aEle.href
= url;
aEle.download
=
"测试下载数据";
aEle.
click();
// Dom.click() 模拟一次该dom的点击事件
}
</
script>
注意： DOM.click(); 是模拟一次dom 的点击事件。