JS Loop Speed Tests

index.js

const els = 10000000;
console.log('setup -> ' + els);
const opts = { 0: 'Fail!', 1: 'Publish!', 2: 'Publish!' };
let arr = [];
for ( let i = 0; i < els; ++i ) {
	if ( Math.floor(Math.random() * 12) > 8 ) {
		arr.push('good');
	} else {
		arr.push('bad');
	}
}

const tests = {
	'forloop_1': {
		'ref': forloop_1,
		'average': null,
	},
	'forloop_2': {
		'ref': forloop_2,
		'average': null,
	},
	'forloop_2_1': {
		'ref': forloop_2_1,
		'average': null,
	},
	'forloop_3': {
		'ref': forloop_3,
		'average': null,
	},
	'foreachloop_1': {
		'ref': foreachloop_1,
		'average': null,
	},
	'foreachloop_2': {
		'ref': foreachloop_2,
		'average': null,
	},
	'map_1': {
		'ref': map_1,
		'average': null,
	},
	'map_2': {
		'ref': map_2,
		'average': null,
	},
	'map_3_sorted': {
		'ref': map_3_sorted,
		'average': null,
	},
	'forloop_3_sorted': {
		'ref': forloop_3_sorted,
		'average': null,
	},
	'while_pop_1': {
		'ref': while_pop_1,
		'average': null,
	},
	'while_pop_1_1': {
		'ref': while_pop_1_1,
		'average': null,
	},
	'while_shift_1': {
		'ref': while_shift_1,
		'average': null,
	},
};

for ( let test in tests ) {
	const t0 = performance.now();
	let newArr = Array.from(arr);
	let out = tests[test]['ref'](newArr);
	const t1 = performance.now();
	console.log(`${test} => ${t1 - t0} ms. (${out})`);
	tests[ test ]['average'] = t1 - t0;
}
//console.log(tests);

function forloop_1(x) {
	let count = 0;
	for ( let i = 0; i < x.length; i++ ) {
		if ( x[i] === 'good' ) {
			count++;
		}
	}

	switch(count) {
		case 0: return 'Fail!';
		case 1: 
		case 2: return 'Publish!';
		default: return 'I smell a series!';
	}
}

function forloop_2(x) {
	let count = 0;
	for ( let i = 0; i < x.length; ++i ) {
		if ( x[i] === 'good' ) {
			count++;
		}
	}

	switch(count) {
		case 0: return 'Fail!';
		case 1: 
		case 2: return 'Publish!';
		default: return 'I smell a series!';
	}
}

// remove x.lenght check in loop
function forloop_2_1(x) {
	let count = 0;
	let total = x.length;
	for ( let i = 0; i < total; ++i ) {
		if ( x[i] === 'good' ) {
			count++;
		}
	}

	switch(count) {
		case 0: return 'Fail!';
		case 1: 
		case 2: return 'Publish!';
		default: return 'I smell a series!';
	}
}

function forloop_3(x) {
	let count = 0;
	for ( let i = 0; i < x.length; ++i ) {
		if ( x[i] === 'good' ) {
			count++;
		}
		if ( count > 2 ) {
			return 'I smell a series!';
		}
	}

	switch(count) {
		case 0: return 'Fail!';
		case 1: 
		case 2: return 'Publish!';
		default: return 'I smell a series!';
	}
}

function foreachloop_1(x) {
	let count = 0;
	for ( let i in x ) {
		if ( x[i] === 'good' ) {
			count++;
		}
	}
	switch(count) {
		case 0: return 'Fail!';
		case 1: 
		case 2: return 'Publish!';
		default: return 'I smell a series!';
	}
}

function foreachloop_2(x) {
	let count = 0;
	for ( let i in x ) {
		if ( x[i] === 'good' ) {
			count++;
		}
		if ( count > 2 ) {
			return 'I smell a series!';
		}
	}
	switch(count) {
		case 0: return 'Fail!';
		case 1: 
		case 2: return 'Publish!';
		default: return 'I smell a series!';
	}
}

function map_1(x) {
	return opts[ x.filter(e => e === 'good').length ] || 'I smell a series!';
}

function map_2(x) {
	let num = x.filter(e => e === 'good').length;
	if ( num > 2 ) { return 'I smell a series'; }
	return opts[ num ];
}

function map_3_sorted(x) {
	x.sort();
	let num = x.filter(e => e === 'good').length;
	if ( num > 2 ) { return 'I smell a series'; }
	return opts[ num ];
}

function forloop_3_sorted(x) {
	x.sort();
	let count = 0;
	for ( let i = 0; i < x.length; ++i ) {
		if ( x[i] === 'good' ) {
			count++;
		}
		if ( count > 2 ) {
			return 'I smell a series!';
		}
	}

	switch(count) {
		case 0: return 'Fail!';
		case 1: 
		case 2: return 'Publish!';
		default: return 'I smell a series!';
	}
}

function while_pop_1(x) {
	let count = 0;
	let a;
	while ( a = x.pop() ) {
		if ( a === 'good' ) {
			count++;
		}
	}

	if ( count > 2 ) {
		return 'I smell a series!';
	}

	if ( count > 0 ) {
		return 'Publish!';
	}

	return 'Fail!';
}

function while_pop_1_1(x) {
	let count = 0;
	let a;
	while ( a = x.pop() ) {
		if ( a === 'good' ) {
			count++;
		}

		if ( count === 3 ) { return 'I smell a series!'; }
	}

	if ( count > 0 ) {
		return 'Publish!';
	}

	return 'Fail!';
}

function while_shift_1(x) {
	return 'skipped';
	let count = 0;
	let a;
	while ( a = x.shift() ) {
		if ( a === 'good' ) {
			count++;
		}

		if ( count === 3 ) { return 'I smell a series!'; }
	}

	if ( count > 0 ) {
		return 'Publish!';
	}

	return 'Fail!';
}