how to return from a function inside of a foreacj code example

Example 1: javascript forEach return

const list = [{ name: "John", age: 36 },{ name: "Jack", age: 17 }];

// if you just have to FIND an object with a specific value,
// use Array.prototype.find:
const foundHim = list.find( person => person.name === "John" );
console.log( foundHim );

// if you still want to / need to RETURN the object / value
let returnedHim;
list.forEach( person => {
  if ( person.age === 17 ) {
    returnedHim = person;
  }
});

console.log( returnedHim )

Example 2: foreach access this

data.forEach(function(d) {
    console.log(d);
    console.log(this.value);
  }, this);
  // ^^^^