Clone of String.prototype.split()

split.js

function split(input, char) {
	let arr = [ ];
	let prevIdx = 0;
	for (let i = 0; i < input.length; i++) {
		if (input[i] === char) {
			let item = '';
			for (let j = prevIdx; j < i; j++) {
				item += input[j];
			}
			arr = [ ...arr, item, ];
			prevIdx = i + 1;
		}
	}
	let item = '';
	for (let j = prevIdx; j < input.length; j++) {
		item += input[j];
	}
	arr = [ ...arr, item, ];
	return arr;
}