本文主要和大家分享js实现动态导出字符串方法，希望能帮助到大家。
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: 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>
<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。
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