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Add notes about working with date cells

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fixes #127 h/t @elad
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elad 2017-03-20 02:04:31 +03:00 committed by SheetJS
parent 8ac3cf6ff7
commit 912d586e8b
1 changed files with 10 additions and 2 deletions
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README.md
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@ -465,7 +465,8 @@ Type `e` is the Error type. `v` holds the number and `w` holds the common name:
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.
`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
@ -540,6 +541,12 @@ Special worksheet keys (accessible as `worksheet[key]`, each starting with `!`):
custom properties. Since the XLS standard properties deviate from the XLSX
standard, XLS parsing stores core properties in both places. .
`wb.WBProps` includes more workbook-level properties:
- Excel supports two epochs (January 1 1900 and January 1 1904), see
[1900 vs. 1904 Date System](http://support2.microsoft.com/kb/180162).
The workbook's epoch can be determined by examining the workbook's
`wb.WBProps.date1904` property.
## Parsing Options
@ -932,6 +939,7 @@ $ open -a Chromium.app http://localhost:8000/stress.html
Tests utilize the mocha testing framework. Travis-CI and Sauce Labs links:
- <https://travis-ci.org/SheetJS/js-xlsx> for XLSX module in nodejs
- <https://semaphoreci.com/sheetjs/js-xlsx> for XLSX module in nodejs
- <https://travis-ci.org/SheetJS/SheetJS.github.io> for XLS\* modules
- <https://saucelabs.com/u/sheetjs> for XLS\* modules using Sauce Labs
@ -1005,7 +1013,7 @@ Worksheet File Format (From Lotus) December 1984
[![Build Status](https://travis-ci.org/SheetJS/js-xlsx.svg?branch=master)](https://travis-ci.org/SheetJS/js-xlsx)
[![Build Status](https://semaphoreci.com/api/v1/sheetjs/js-xlsx/branches/master/badge.svg)](https://semaphoreci.com/sheetjs/js-xlsx)
[![Build Status](https://semaphoreci.com/api/v1/sheetjs/js-xlsx/branches/master/shields_badge.svg)](https://semaphoreci.com/sheetjs/js-xlsx)
[![Coverage Status](http://img.shields.io/coveralls/SheetJS/js-xlsx/master.svg)](https://coveralls.io/r/SheetJS/js-xlsx?branch=master)