SheetJS/js-xlsx cdn excle数据导出
百里默
引入依赖js
下载 SheetJS
下载FileSaver.js
实现Vue 导出数据 核心方法
export_json_to_excel(th, jsonData, defaultTitle) {
/* original data */
var data = jsonData;
data.unshift(th);
var ws_name = "SheetJS";
var wb = {
SheetNames: [],
Sheets: {},
Props: {}
};
var ws = this.sheet_from_array_of_arrays(data);
/* add worksheet to workbook */
wb.SheetNames.push(ws_name);
wb.Sheets[ws_name] = ws;
var wbout = XLSX.write(wb, { bookType: 'xlsx', bookSST: false, type: 'binary' });
var title = defaultTitle || '列表'
console.log(th);
saveAs(new Blob([this.s2ab(wbout)], { type: "application/octet-stream" }), title + ".xlsx")
},
完整示例
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<!-- import CSS -->
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
</head>
<body>
<div id="app">
<div class="app-container">
<!-- 导出按钮 -->
<div class="filter-container">
<el-button :loading="downloadLoading" class="filter-item" type="primary" icon="el-icon-download"
@click="handleDownload">导出</el-button>
</div>
</div>
</div>
</body>
<!-- import Vue before Element -->
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<!-- import JavaScript -->
<script src="https://unpkg.com/element-ui/lib/index.js"></script>
<!-- 导入你下载的js -->
<script src="./FileSaver.js"></script>
<script src="./xlsx.core.min.js"></script>
<script>
new Vue({
el: '#app',
data: function () {
return {
downloadLoading: false,
tableData: [
{ 'index': '0', "nickName": "哈哈哈", "name": "小明" },
{ 'index': '1', "nickName": "嘿嘿", "name": "小红" },
{ 'index': '2', "nickName": "八百", "name": "小兰" }
]
}
},
methods: {
handleDownload() {
this.downloadLoading = true
const tHeader = ['序号', '昵称', '姓名'];
// 上面设置Excel的表格第一行的标题
const filterVal = ['index', 'nickName', 'name'];
// 上面的index、nickName、name是tableData里对象的属性
const list = this.tableData; //把data里的tableData存到list
const data = this.formatJson(filterVal, list);
this.export_json_to_excel(tHeader, data, '12312321');
setTimeout(() => {
this.downloadLoading = false
}, 100);
},
formatJson(filterVal, jsonData) {
return jsonData.map(v => filterVal.map(j => v[j]))
},
sheet_from_array_of_arrays(data, opts) {
var ws = {};
var range = { s: { c: 10000000, r: 10000000 }, e: { c: 0, r: 0 } };
for (var R = 0; R != data.length; ++R) {
for (var C = 0; C != data[R].length; ++C) {
if (range.s.r > R) range.s.r = R;
if (range.s.c > C) range.s.c = C;
if (range.e.r < R) range.e.r = R;
if (range.e.c < C) range.e.c = C;
var cell = { v: data[R][C] };
if (cell.v == null) continue;
var cell_ref = XLSX.utils.encode_cell({ c: C, r: R });
if (typeof cell.v === 'number') cell.t = 'n';
else if (typeof cell.v === 'boolean') cell.t = 'b';
else if (cell.v instanceof Date) {
cell.t = 'n';
cell.z = XLSX.SSF._table[14];
cell.v = datenum(cell.v);
}
else cell.t = 's';
ws[cell_ref] = cell;
}
}
if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);
return ws;
},
export_json_to_excel(th, jsonData, defaultTitle) {
/* original data */
var data = jsonData;
data.unshift(th);
var ws_name = "SheetJS";
var wb = {
SheetNames: [],
Sheets: {},
Props: {}
};
var ws = this.sheet_from_array_of_arrays(data);
let autoWidth = false;
if (autoWidth) {
/*设置worksheet每列的最大宽度*/
const colWidth = data.map((row) =>
row.map((val) => {
/*先判断是否为null/undefined*/
if (val == null) {
return {
wch: 10,
};
} else if (val.toString().charCodeAt(0) > 255) {
/*再判断是否为中文*/
return {
wch: val.toString().length * 2,
};
} else {
return {
wch: val.toString().length,
};
}
})
);
/*以第一行为初始值*/
let result = colWidth[0];
for (let i = 1; i < colWidth.length; i++) {
for (let j = 0; j < colWidth[i].length; j++) {
if (result[j]["wch"] < colWidth[i][j]["wch"]) {
result[j]["wch"] = colWidth[i][j]["wch"];
}
}
}
ws["!cols"] = result;
}
/* add worksheet to workbook */
wb.SheetNames.push(ws_name);
wb.Sheets[ws_name] = ws;
var wbout = XLSX.write(wb, { bookType: 'xlsx', bookSST: false, type: 'binary' });
var title = defaultTitle || '列表'
console.log(th);
saveAs(new Blob([this.s2ab(wbout)], { type: "application/octet-stream" }), title + ".xlsx")
},
s2ab(s) {
var buf = new ArrayBuffer(s.length);
var view = new Uint8Array(buf);
for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
return buf;
},
}
})
</script>
</html>
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