Check Array Before Element When Push Element

Question

I have an Array ( key, startValue , EndValue);

var fruits = [[1,10, 15], [1,25, 30]];

i want to Validate before Push

console.log(push([1,5, 35]));  // false
console.log(push([2,5, 35]));  // true
console.log(push([1,30, 40])); // true
console.log(push([1,15, 25])); // true
console.log(push([1,5, 10]));  // true

console.log(fruits);

Similarly i have key 2,3,4,5, ect.

i am working with below Script.

function push(array) {
    return fruits.every(function(a) {
        return array[0] == a[0] && (array[2] <= a[1] || a[2] <= array[1]);
    }) && fruits.push(array) && true;
}

My script is work only for startValue , EndValue, not for Key. — Mr world wide
– Mr world wide, Commented Dec 6, 2016 at 11:57
oh that's what you want ? console.log(push([2,5, 35])); you want this to be true instead of false ? — Mahi
– Mahi, Commented Dec 6, 2016 at 12:01

Nina Scholz · Accepted Answer · 2016-12-06 12:11:25Z

3

You could check for the keys first.

return array[0] !== a[0] || array[2] <= a[1] || a[2] <= array[1];
//     ^^^^^^^^^^^^^^^^^^^^

function push(array) {
    return fruits.every(function(a) {
        return array[0] !== a[0] || array[2] <= a[1] || a[2] <= array[1];
    }) && fruits.push(array) && true;
}

var fruits = [[1, 10, 15], [1, 25, 30]];

console.log(push([1, 5, 35]));  // false
console.log(push([2, 5, 35]));  // true
console.log(push([1, 30, 40])); // true
console.log(push([1, 15, 25])); // true
console.log(push([1, 5, 10]));  // true
console.log(push([2, 0, 5]));   // true
console.log(fruits);

.as-console-wrapper { max-height: 100% !important; top: 0; }

answered Dec 6, 2016 at 12:11

Nina Scholz

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