Find element in an array with JavaScript #javascript #array

Find-element-in-an-array-with-JavaScript.js

let charts = {
  curationstate: "Curation State",
  modellingapproach: "Modelling Approach",
  organism: "Organism",
  journal: "Journal"
};

// Note: the three equal signs so that null won't be equal to undefined
if (charts["curationstate"] === undefined) {
   // do something
}

// this works even if you have {"publication": undefined}
if ("publication" in charts) {
   // do something
}

////////////////////////////

var fruits = ["Banana", "Orange", "Apple", "Mango"];
console.log(fruits instanceof Array); // the output: true
console.log(fruits[0] === undefined); // the output: false

//============================================//
vendors = [
    {
      Name: 'Magento',
      ID: 'ABC'
     },
    {
      Name: 'Microsoft',
      ID: 'DEF'
    } //and so on goes array... 
];

if (vendors.filter(e => e.Name === 'Magento').length > 0) {
  /* true - do sometyhing */
}
// or:

if (vendors.some(e => e.Name === 'Magento')) {
  /* true */
}
// Compatibility with old browsers:
if (vendors.filter(function(e) { return e.Name === 'Magento'; }).length > 0) {
  /* true - do sometyhing */
}