pagination-count-helper - npm Package Compare versions

Comparing version 1.0.0 to 1.0.1

index.js

		@@ -8,11 +8,7 @@ module.exports = class PaginationHelper {
		itemCount= ()=> this.items.length

		// get number of all pages. number of all pages is 1-based.
		pageCount= ()=> Math.ceil(this.itemCount()/this.pageLimit)

		// get number of items on this (as provided with pageindex argument) page. Page index is 0-based
		pageItemCount= pageIndex=> pageIndex< 0 \|\| pageIndex >= this.pageCount()? -1: pageIndex+1< this.pageCount()? this.pageLimit: this.itemCount()%this.pageLimit \|\| this.pageLimit

		// get the page number of the page the nth-item will be displayed on. itemIndex and pageIndex are 0-based
		pageIndex= itemIndex=> itemIndex+1> this.itemCount() \|\| itemIndex+1 < 1? -1: Math.ceil((itemIndex+1)/this.pageLimit)-1
		}

index.test.js

		const PaginationHelper = require('./index')
		test("Count pages, items and items on page 0", ()=> {
		const helper = new PaginationHelper(['a','b','c','d','e','f','g','h','i'], 3);
		const helper = new PaginationHelper(['a','b','c','d','e','f','g','h'], 3);
		expect(helper.pageCount()).toBe(3)
		expect(helper.itemCount()).toBe(9)
		expect(helper.pageItemCount(0)).toBe(3)
		expect(helper.itemCount()).toBe(8)
		expect(helper.pageItemCount(2)).toBe(2)
		expect(helper.pageIndex(7)).toBe(2)
		})

package.json

		{
		"name": "pagination-count-helper",
		"version": "1.0.0",
		"version": "1.0.1",
		"description": "Helper class for page and page item counting",
		@@ -5,0 +5,0 @@ "main": "index.js",

README.md

		@@ -7,6 +7,15 @@ # pagination-count-helper
		```js
		const helper = new PaginationHelper(['a','b','c','d','e','f','g','h','i'], 3);
		const helper = new PaginationHelper(['a','b','c','d','e','f','g','h'], 3);

		// retrieve number of pages (1-based)
		helper.pageCount() // 3
		helper.itemCount() // 9
		helper.pageItemCount(2) // 3

		// retrieve number of items
		helper.itemCount() // 8

		// retrieve number of items on this (as provided by the argument) page (0-based)
		helper.pageItemCount(2) // 2

		// retrieve number of the page the specified item will be displayed on (item number and page number are 0-based)
		helper.pageIndex(7) // 2
		```

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