[There's a nicer way.]
代碼段如下:
# alllw the browser to create a CSV file and download it.
# _arrays = [[..], [..],.., [..]]
# ps: "\uFEFF" to solve the problem of wrong display of chinese in excel
module.exports =
csv: (_filename, _arrays)->
# store data into a string
_str = ''
for _arr in _arrays
_line = ''
for _index in _arr
_line += ',' if _line isnt ''
_line += _index
_str += _line + '\r\n'
# create the click to download csv file
_a = $('<a class="hide">點擊下載</a>')
_a.attr "download", "#{_filename}.csv"
blob = new Blob ["\uFEFF" + _str], {'type':'application\/octet-stream'}
_a.attr "href", window.URL.createObjectURL(blob)
$("body").append _a
_a[0].click()
setTimeout ->
_a.remove()
, 1000
ps:
(1)arrays爲傳入的參數,其中包含多個array,每個代表csv的一行數據,第一行爲標題行
(2)整個過程分爲兩部分,一是將arrays中的數據傳入到_str中,變成一個字符串;第二個部分是添加一個下載按鈕並觸發,下載相應文件,Blob(binary large object)爲一種二進制大對象類型
(3)\uFEFF解決了excel打開下載文件中中文亂碼的問題