javascript find item in array and return index code example

Example 1: search for a value in an array of objects javascript and get its index

a = [
  {prop1:"abc",prop2:"qwe"},
  {prop1:"bnmb",prop2:"yutu"},
  {prop1:"zxvz",prop2:"qwrq"}];
    
index = a.findIndex(x => x.prop2 ==="yutu");

console.log(index);

Example 2: .findIndex(

array.findIndex(call back function)

 //index of ............
 //first