Identify and work with keycodes on JavaScript
npm install js-keycodesjs-keycodes
===========
Identify and work with keyCodes on JavaScript
``shell`
npm i -S js-keycodes
First import the lib into your code:
`javascript`
import * as KeyCodes from 'js-keycodes';
Or individual functions:
`javascript`
import { isLetter, isNumber } from 'js-keycodes';
#### Verify if a keyCode is a letter
`javascript
import { isLetter } from 'js-keycodes';
const myKeyCode = 90;
if (isLetter(myKeyCode)) {
// Do stuff if your keyCode is a letter
}
`
#### Verify if ENTER is pressed on an event
`javascript
import { keyCodes } from 'js-keycodes';
const handleAnEvent = (event) => {
if (event.which === keyCodes.ENTER) {
// Do your stuff here.
}
}
`
#### KeyCodes.isNumber()
Return true if the keyCode is a number from 0 to 9.
#### KeyCodes.isLetter()
Return true if the keyCode is a letter from A to Z.
#### KeyCodes.isNavigation()
Return true if the keyCode represents an Arrow key like UP, DOWN, LEFT or RIGHT.
#### KeyCodes.isWhitespace()
Return true if the keyCode represent ENTER, SPACE or TAB
#### KeyCodes.isF1ToF12()
Return true if the keyCode represent any of the F buttons from F1 to F12
#### KeyCodes.keyCodeToString()
Return a string representation of the keyCode.
`javascript
import { keyCodeToString } from 'js-keycodes';
const myLetter = keyCodeToString(90);
// -> 'Z'
const myNumber = keyCodeToString(50)
// '2'
`
#### KeyCodes.getKeyNameFromKeyCode()
Return a string representation based on the programmatic name of the keyCodejavascript
import { getKeyNameFromKeyCode } from 'js-keycodes';
const myLetter = getKeyNameFromKeyCode(90);
// -> 'Z'
const myNumber = getKeyNameFromKeyCode(50);
// -> 'TWO'
const myKey = getKeyNameFromKeyCode(13);
// -> 'ENTER'
const myF = getKeyNameFromKeyCode(121);
// -> 'F10'
`
javascript
import { keyCodes } from 'js-keycodes';keyCodes.ENTER === 13;
// -> true
keyCodes.F12 === 123;
// -> true
// Using with JQuery
$.click((event) => {
if (event.keyCode === keyCodes.F1) {
// do an amazing think!
}
});
``