## JavaScript导出Excel类
~~~
var ExcelHelper = {};
ExcelHelper.getBrowserName = function() {
var ua = window.navigator.userAgent;
//ie
if (ua.indexOf("MSIE") >= 0) {
return 'ie';
}
//firefox
else if (ua.indexOf("Firefox") >= 0) {
return 'Firefox';
}
//Chrome
else if (ua.indexOf("Chrome") >= 0) {
return 'Chrome';
}
//Opera
else if (ua.indexOf("Opera") >= 0) {
return 'Opera';
}
//Safari
else if (ua.indexOf("Safari") >= 0) {
return 'Safari';
}
}
ExcelHelper.tableToExcel = (function() {
var uri = 'data:application/vnd.ms-excel;base64,',
template = '<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"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>',
base64 = function(s) {
return window.btoa(unescape(encodeURIComponent(s)))
},
format = function(s, c) {
return s.replace(/{(\w+)}/g,
function(m, p) {
return c[p];
})
}
return function(table, name) {
var ctx = {
"worksheet": name || 'Worksheet',
table: table.innerHTML
}
window.location.href = uri + base64(format(template, ctx))
}
})();
ExcelHelper.CreateExcelByTable = function(table) {
var bn = this.getBrowserName();
if (bn == "ie") {
var ax = new ActiveXObject("Excel.Application");
var wb = ax.Workbooks.Add();
var sheet = wb.Worksheets(1);
var tr = document.body.createTextRange();
tr.moveToElementText(table);
tr.select();
tr.execCommand("Copy");
sheet.Paste();
ax.Visible = true;
var si = null;
var cleanup = function() {
if (si) {
window.clearInterval(si);
}
}
try {
var fname = ax.Application.GetSaveAsFilename("Excel.xls", "Excel Spreadsheets (*.xls), *.xls");
} catch (e) {
print("Nested catch caught " + e);
} finally {
wb.SaveAs(fname);
var savechanges = false;
wb.Close(savechanges);
ax.Quit();
ax = null;
si = window.setInterval(cleanup, 1);
}
} else {
this.tableToExcel(table);
}
}
~~~
## 测试代码
~~~
var table = document.getElementById('table_id');
ExcelHelper.CreateExcelByTable(table);
~~~
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