I have an array of objects. Each object contains max and min key value pairs. How do I find the object that contains a predefined value?

Question

I have an array of insurance rates that looks like this

const insuranceRate = [
{
    "min_value": 1,
    "max_value": 25000,
    "add": 328
}, {
    "min_value": 25001,
    "max_value": 25500,
    "add": 331
}, {
    "min_value": 25501,
    "max_value": 26000,
    "add": 335
}, {
    "min_value": 26001,
    "max_value": 26500,
    "add": 338
}]

Let's say I purchase a car at $25,900. How to I find the right object and add $335 to my insurance cost?

Answer 1

Thats pretty simple, have an for loop go through every element and check if ur value is inbetween the min and max values the function would look something like that:

function F(value){
    for( i=0;i<insuranceRate.length;i++){
        if ( value >= insuranceRate[i].min_value  && value <= insuranceRate[i].max_value){
            return insuranceRate[i];
        }
    }
    return -1;
}

which returns the element within the range, which u then can use to get your add value, also if ur value is not between the range, it'll return -1

Answer 2

If you want the one with the lowest price I'd go with this:

var valid_rates = []; 
insuranceRate.forEach((item, index)=>{ 
    if (price >= item.min_value &&  price <= item.max_value) { 
        valid_rates.push(item.add) ;
    }
}) ;

// Lowest price
Math.min(valid_rates) ;

Answer 3

Loop over the aray and check whether your car cost is in the range, if so - add it to the insurance cost - in this example I initialized it with 0:

var my_car = 25900;
var insuranceCost = 0;
for (var i=0; i<insuranceRate.length; i++) {
    if (my_car >= insuranceRate[i].min_value && 
        my_car <= insuranceRate[i].max_value) {
           insuranceCost += insuranceRate[i].add;
    }
} 

console.log(insuranceCost); //335

Answer 4

Here you go

 const insuranceRate = [
   {
    "min_value": 1,
    "max_value": 25000,
    "add": 328
   }, {
    "min_value": 25001,
    "max_value": 25500,
    "add": 331
   }, {
    "min_value": 25501,
    "max_value": 26000,
    "add": 335
   }, {
    "min_value": 26001,
    "max_value": 26500,
    "add": 338
   }];
   var price=25900;

   var filter=insuranceRate.filter(i=>price >= i.min_value && price <= 
   i.max_value);
   console.log("Result:",filter);