Answers for "javascript split string into array by separator"

javascript array split chunk

const chunk = (arr, size) => arr.reduce((acc, e, i) => (i % size ? acc[acc.length - 1].push(e) : acc.push([e]), acc), []);

// Examples
chunk([1, 2, 3, 4, 5, 6, 7, 8], 3);     // [[1, 2, 3], [4, 5, 6], [7, 8]]
chunk([1, 2, 3, 4, 5, 6, 7, 8], 4);     // [[1, 2, 3, 4], [5, 6, 7, 8]]

split 2 arrays javascript

const your_array = ['a','b','c','d','e','f']
const thread1Length = Math.floor(your_array.length/2)
const thread2Length = your_array.length-thread1Length
const thread1 = your_array.slice(0,thread1Length)
const thread2 = your_array.slice(thread1Length,your_array.length)