// source: http://stackoverflow.com/questions/16491758/remove-objects-from-array-by-object-property
// source: https://gist.github.com/scottopolis/6e35cf0d53bae81e6161662e6374da04

// We have an array of objects, we want to remove one object using only the id property
var fruits = [{id:11, name:'Apple', color:'red'}, {id:12, name:'Mangosteen', color:'black'}, {id:13, name:'Banana', color:'yellow'}];

// Get index of object with id = 12
var removeAtIndex = fruits.map(function(item) { return item.id; }).indexOf(12);

// remove object
fruits.splice(removeAtIndex, 1);



// Checking Is Existing Value
let isApple = fruits.some(element => element.name === 'Apple');