Javascript Tips

Shorten the console.log

 const log = console.log.bind(document)
 log("some message")

Use isNum to verify a number

function isNum(n) {return !isNaN(parseFloat(n)) && isFinite(n);}

Use isNull

 
 const isNull = value => value === null || value === undefined;

Remove duplicates from an array

const delDuplicates = array => [...new Set(array)]