A CPU intensive operation. Use to test imitate blocking code, test WebWorkers etc.

cpu-intensive.js

function mySlowFunction(baseNumber) {
	console.time('mySlowFunction');
	let result = 0;	
	for (var i = Math.pow(baseNumber, 7); i >= 0; i--) {		
		result += Math.atan(i) * Math.tan(i);
	};
	console.timeEnd('mySlowFunction');
}

mySlowFunction(8); // higher number => more iterations => slower

另一个版本

function mySlowFunction(blockTime: number) {
	console.time('mySlowFunction');
        const now = performance.now();
	while(performance.now() - now < blockTime) {}
	console.timeEnd('mySlowFunction');
}

mySlowFunction(1000);