Javascript performance tests: Remove elements from array

gistfile1.txt

let o1 = performance.now();
let test = ['a', 'b', 'c']
let toRemove = test.indexOf('b');
if(toRemove !== -1){
test.splice(toRemove, 1)
console.log(test);
}
let o2 = performance.now();
console.log(o2 - o1);

let t1 = performance.now();
let test2 = ['a', 'b', 'c'];
console.log(test2.filter(v => v !== 'b'));
let t2 = performance.now();
console.log(t2 - t1);