Formatter Utils

Helping Tree-Shake

You will notice all examples import format Object from Quasar. However, if you need only one formatter method from it, then you can use ES6 destructuring to help Tree Shaking embed only that method and not all of format.

Example:

// we import all of `format`
import { format } from 'quasar'
// destructuring to keep only what is needed
const { capitalize, humanStorageSize } = format

console.log( capitalize('some text') )
// Some text
console.log( humanStorageSize(13087) )
// 12.8kB

You can also import all formatters and use whatever you need like this (but note that your bundle will probably contain unused methods too):

import { format } from 'quasar'

console.log( format.capitalize('some text') )
console.log( format.humanStorageSize(13087) )

TIP

For usage with the UMD build see here.

Capitalize

import { format } from 'quasar'
const { capitalize } = format

console.log( capitalize('some text') )
// Some text

Format to Human Readable Size

import { format } from 'quasar'
const { humanStorageSize } = format

// humanStorageSize(value, decimals = 1)
// "decimals" param requires Quasar v2.15.3+

console.log( humanStorageSize(13087) )
// 12.8KB

console.log( humanStorageSize(1024 * 1024 * 2.25, 3) )
// 2.250MB

Normalize Number to Interval

import { format } from 'quasar'
const { between } = format

// (Number) between(Number, Number min, Number max)
console.log( between(50, 10, 20) )
// 20

import { format } from 'quasar'
const { normalizeToInterval } = format

// (Number) normalizeToInterval(Number, Number lower_margin, Number upper_margin)

console.log( normalizeToInterval(21, 10, 20) ) // 10
console.log( normalizeToInterval(33, 10, 20) ) // 11
console.log( normalizeToInterval(52, 10, 20) ) // 19
console.log( normalizeToInterval(5, 10, 16) ) // 12

Pad String

import { format } from 'quasar'
const { pad } = format

// (String) pad(String toPad, Number length, String paddingCharacter)
// length is default 2
// paddingCharacter is default '0'
console.log( pad('2', 4) )
// '0002'

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1. Introduction

1.1. Helping Tree-Shake

2. Capitalize

3. Format to Human Readable Size

4. Normalize Number to Interval

5. Pad String