JSFiddle - React, Tailwind, and code Playground

JavaScript

function checkForExistance(arrayOfItems, name) {
    return $.grep(arrayOfItems, function (item) {
        return item.Name === name;
    }).length > 0;

}


var arr = [{
    "Name": "blabla",
    "Id": "1"
}, {
    "Name": "foo",
    "Id": "2"
}]

console.log(checkForExistance(arr, "foo"));