2017-03-20 09:02:25 +00:00
|
|
|
#### Data Types
|
|
|
|
|
|
|
|
|
|
The raw value is stored in the `v` field, interpreted based on the `t` field.
|
|
|
|
|
|
|
|
|
|
Type `b` is the Boolean type. `v` is interpreted according to JS truth tables.
|
|
|
|
|
|
|
|
|
|
Type `e` is the Error type. `v` holds the number and `w` holds the common name:
|
|
|
|
|
|
|
|
|
|
| Value | Error Meaning |
|
|
|
|
|
| -----: | :-------------- |
|
|
|
|
|
| `0x00` | `#NULL!` |
|
|
|
|
|
| `0x07` | `#DIV/0!` |
|
|
|
|
|
| `0x0F` | `#VALUE!` |
|
|
|
|
|
| `0x17` | `#REF!` |
|
|
|
|
|
| `0x1D` | `#NAME?` |
|
|
|
|
|
| `0x24` | `#NUM!` |
|
|
|
|
|
| `0x2A` | `#N/A` |
|
|
|
|
|
| `0x2B` | `#GETTING_DATA` |
|
|
|
|
|
|
|
|
|
|
Type `n` is the Number type. This includes all forms of data that Excel stores
|
|
|
|
|
as numbers, such as dates/times and Boolean fields. Excel exclusively uses data
|
|
|
|
|
that can be fit in an IEEE754 floating point number, just like JS Number, so the
|
|
|
|
|
`v` field holds the raw number. The `w` field holds formatted text. Dates are
|
|
|
|
|
stored as numbers by default and converted with `XLSX.SSF.parse_date_code`.
|
|
|
|
|
|
|
|
|
|
Type `d` is the Date type, generated only when the option `cellDates` is passed.
|
|
|
|
|
Since JSON does not have a natural Date type, parsers are generally expected to
|
|
|
|
|
store ISO 8601 Date strings like you would get from `date.toISOString()`. On
|
|
|
|
|
the other hand, writers and exporters should be able to handle date strings and
|
|
|
|
|
JS Date objects. Note that Excel disregards timezone modifiers and treats all
|
|
|
|
|
dates in the local timezone. js-xlsx does not correct for this error.
|
|
|
|
|
|
|
|
|
|
Type `s` is the String type. `v` should be explicitly stored as a string to
|
|
|
|
|
avoid possible confusion.
|
|
|
|
|
|
|
|
|
|
Type `z` represents blank stub cells. These do not have any data or type, and
|
|
|
|
|
are not processed by any of the core library functions. By default these cells
|
|
|
|
|
will not be generated; the parser `sheetStubs` option must be set to `true`.
|
|
|
|
|
|
2017-03-21 20:44:35 +00:00
|
|
|
#### Dates
|
|
|
|
|
|
|
|
|
|
By default, Excel stores dates as numbers with a format code that specifies date
|
|
|
|
|
processing. For example, the date `19-Feb-17` is stored as the number `42785`
|
|
|
|
|
with a number format of `d-mmm-yy`. The `SSF` module understands number formats
|
|
|
|
|
and performs the appropriate conversion.
|
|
|
|
|
|
|
|
|
|
XLSX also supports a special date type `d` where the data is an ISO 8601 date
|
|
|
|
|
string. The formatter converts the date back to a number.
|
|
|
|
|
|
|
|
|
|
The default behavior for all parsers is to generate number cells. Setting
|
|
|
|
|
`cellDates` to true will force the generators to store dates.
|
|
|
|
|
|
