JSFiddle - React, Tailwind, and code Playground

by meo

JavaScript

var brasizes = { 
    "A": 12.5 , 
    "B": 15, 
    "C": 17.5,
    "D": 20,
    "E/DD": 22.5,
    "F/EE/DDD": 25,
    "G/FF/EEE": 27.5,
    "H": 30,
    "HH" : 32.5,
    "II/J": 35,
    "JJ": 1000
}



findStandartBraSize = function( difference,sizes ){

    for(var key in sizes){
        if( difference <= sizes[key] ){
            return sizes[key]
        }
    }
}

findStandartBraSize(15,brasizes )