How do I remove an array item in TypeScript?

Question

I have an array that I\'ve created in TypeScript and it has a property that I use as a key. If I have that key, how can I remove an item from it?

Answer 1

let a: number[] = [];

a.push(1);
a.push(2);
a.push(3);

let index: number = a.findIndex(a => a === 1);

if (index != -1) {
    a.splice(index, 1);
}

console.log(a);