is-index

Checks if the given value is a valid array-like index.

Install

$ npm install --save is-index 

Usage

For more use-cases see the tests

var isIndex = require('is-index');
 
isIndex(1);        // => true
isIndex(1, 5);     // => true
isIndex('1');      // => true
isIndex('1', 5);   // => true
isIndex('1', '5'); // => true
 
isIndex();         // => false
isIndex(null);     // => false
isIndex(true);     // => false
isIndex({});       // => false
isIndex([]);       // => false

API

isIndex(value, length)

value - The value to check.

length - The upper bounds of a valid index. Default is MAX_SAFE_INTEGER.

Related

• is-length - Checks if the given value is a valid array-like length.
• to-length - Converts value to an integer suitable for use as the length of an array-like object.
• drop-left - Creates a slice of array with n elements dropped from the beginning.
• drop-right - Creates a slice of array with n elements dropped from the end.
• pick-items - Randomly sampling some items from an array.
• pick-item - Randomly sampling a item from an array.
• shuffle-arr - Randomize the order of the elements in an array or array-like object.
• is-array-like - Checks if the given value is an array or array-like object.

Contributing

Pull requests and stars are highly welcome.

For bugs and feature requests, please create an issue.