<!DOCTYPE html>
<html>
<head>
<title>js读取Excel文件</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body class="Body noover">
<input type="file" id="file" />
<div id="demo"></div>
</body>
<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<script src="https://blog-static.cnblogs.com/files/xieyongbin/xlsx.full.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
/*
FileReader共有4种读取方法：
1.readAsArrayBuffer(file)：将文件读取为ArrayBuffer。
2.readAsBinaryString(file)：将文件读取为二进制字符串
3.readAsDataURL(file)：将文件读取为Data URL
4.readAsText(file, [encoding])：将文件读取为文本，encoding缺省值为'UTF-8'
*/
var wb; //读取完成的数据
var rABS = false; //是否将文件读取为二进制字符串
function fixdata(data) {
//文件流转BinaryString
var o = "",
l = 0,
w = 10240;
for (; l < data.byteLength / w; ++l)
o += String.fromCharCode.apply(
null,
new Uint8Array(data.slice(l * w, l * w + w))
);
o += String.fromCharCode.apply(null, new Uint8Array(data.slice(l * w)));
return o;
}
$("#file").change(function () {
if (!this.files) {
return;
}
var f = this.files[0];
var reader = new FileReader();
reader.onload = function (e) {
var data = e.target.result;
if (rABS) {
wb = XLSX.read(btoa(fixdata(data)), {
type: "base64",
});
} else {
wb = XLSX.read(data, {
type: "binary",
});
}
document.getElementById("demo").innerHTML = JSON.stringify(
XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]])
);
};
if (rABS) {
reader.readAsArrayBuffer(f);
} else {
reader.readAsBinaryString(f);
}
});
});
</script>
</html>
标签：文件,读取,前端,excel,file,var,data,wb From： https://www.cnblogs.com/guxingzhe/p/18238455