d3-format-india's Introduction

d3-format-india

Indian Number System formatter.

Installing

If you use NPM, npm install d3-format-india. Otherwise, download the latest release.

API Reference

# formatIndia(value)

Formats the given number value using the Indian Number System. For example:

var formatIndia = require("d3-format-india").formatIndia;

console.log(formatIndia(10)); // Prints "10"
console.log(formatIndia(100)); // Prints "100"
console.log(formatIndia(1000)); // Prints "1,000"
console.log(formatIndia(10000)); // Prints "10,000"
console.log(formatIndia(100000)); // Prints "1,00,000"
console.log(formatIndia(1000000)); // Prints "10,00,000"
console.log(formatIndia(10000000)); // Prints "1,00,00,000"
console.log(formatIndia(10000000.4543)); // Prints "1,00,00,000.4543"
console.log(formatIndia(-1000000)); // Prints "-10,00,000"
console.log(formatIndia(-10000000.4543)); // Prints "-1,00,00,000.4543"

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d3-format-india's Issues

Fails on large numbers

At some point JavaScript starts Stringing numbers as '1e,+21'. I think we'd like to avoid this.

One solution may be to use d3-format internally, instead of the String constructor.

Failing tests are in the branch https://github.com/curran/d3-format-india/tree/large-numbers

# formatIndia() returns correctly formatted numbers using the Indian Number System.
ok 1 should be equal
ok 2 should be equal
ok 3 should be equal
ok 4 should be equal
ok 5 should be equal
ok 6 should be equal
ok 7 should be equal
ok 8 should be equal
ok 9 should be equal
ok 10 should be equal
ok 11 should be equal
ok 12 should be equal
ok 13 should be equal
not ok 14 should be equal
  ---
    operator: equal
    expected: '1,00,00,00,00,00,00,00,00,00,000'
    actual:   '1e,+21'
    at: Test.<anonymous> (/home/curran/repos/d3-format-india/test/format-india-test.js:21:8)
  ...
not ok 15 should be equal
  ---
    operator: equal
    expected: '1,00,00,00,00,00,00,00,00,00,00,000'
    actual:   '1e,+23'
    at: Test.<anonymous> (/home/curran/repos/d3-format-india/test/format-india-test.js:22:8)
  ...

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