Check consecutive numbers in array javascript

There is a array like this on my hand;

var array = [{value:"0"},{value:"1"},{value:"2"},{value:"3"},{value:"4"}];

I need check, this numbers is going consecutive?

[{value:"0"},{value:"1"},{value:"2"},{value:"3"},{value:"4"}];
TRUE (0,1,2,3,4)

[{value:"0"},{value:"1"},{value:"2"},{value:"3"},{value:"5"}];
FALSE (0,1,2,3,5)

Answer

You can use reduce with the initial value as the first element of the array

const checkIsConsecutive = (array) =>
    Boolean(array.reduce((res, cur) => (res ? (Number(res.value) + 1 === Number(cur.value) ? cur : false) : false)));

console.log(checkIsConsecutive([{ value: '0' }, { value: '1' }, { value: '2' }, { value: '3' }, { value: '4' }]));
console.log(checkIsConsecutive([{ value: '0' }, { value: '1' }, { value: '2' }, { value: '3' }, { value: '5' }]));