比较数组项

Question

I got array (someObjects) of some objects (someObject) with two properties - number and date. I want to compare all objects in array with each others. If in array exist object with smaller number and latest date than other objects - I need to return "not ok".

How can I do that in JavaScript?

Answer 1

 const filterFunc = (a, _, array) => { return (array.some(el => el.number > a.number) && array.some(el => el.date < a.date)); }; const isNotOk = array => { if (array.some(filterFunc)) console.log("not ok"); }; const someObjects = [{ number: 42, date: new Date(999999999999) }, { number: 7, date: new Date(555555555555) }]; const someObjects2 = [{ number: 1, date: new Date(999999999999) }, { number: 7, date: new Date(555555555555) }]; isNotOk(someObjects); // prints "not Ok" isNotOk(someObjects2); // does nothing