Filter an array of objects searching all key-value pairs

Question

Let's say I have an array of objects in JavaScript that looks something like this:

namesArray = [
  { name: 'John', friend: 'Steve', brother: 'Jeff', sister: 'Karen'},
  { name: 'Sarah', friend: 'Joan', brother: 'Marvin', sister: 'Diana'},
  { name: 'Morris', friend: 'Tanya', brother: 'Mike', sister: 'Lisa'},
  { name: 'Brian', friend: 'Tim', brother: 'Andrew', sister: 'Tanya'},
];

If I wanted to filter out the objects in the above array that contain the value "Tanya" into a new array, how would I go about it? The new array would look like this:

newArray = [
  { name: 'Morris', friend: 'Tanya', brother: 'Mike', sister: 'Lisa'},
  { name: 'Brian', friend: 'Tim', brother: 'Andrew', sister: 'Tanya'},
];

Answer 1

You are looking for filter

 namesArray = [ { name: 'John', friend: 'Steve', brother: 'Jeff', sister: 'Karen'}, { name: 'Sarah', friend: 'Joan', brother: 'Marvin', sister: 'Diana'}, { name: 'Morris', friend: 'Tanya', brother: 'Mike', sister: 'Lisa'}, { name: 'Brian', friend: 'Tim', brother: 'Andrew', sister: 'Tanya'}, ]; const output = namesArray.filter(obj => Object.values(obj).findIndex(val => val === 'Tanya') > -1 ) console.log(output) 

Answer 2

Here's a short solution that requires Object.values ( caniuse? ):

 var namesArray = [ { name: 'John', friend: 'Steve', brother: 'Jeff', sister: 'Karen' }, { name: 'Sarah', friend: 'Joan', brother: 'Marvin', sister: 'Diana' }, { name: 'Morris', friend: 'Tanya', brother: 'Mike', sister: 'Lisa' }, { name: 'Brian', friend: 'Tim', brother: 'Andrew', sister: 'Tanya' }, ]; var tanyaOnly = namesArray.filter(e => Object.values(e).indexOf("Tanya") > -1); console.log(tanyaOnly); 

Answer 3

Use of includes would be much easier.

 const namesArray = [ { name: 'John', friend: 'Steve', brother: 'Jeff', sister: 'Karen'}, { name: 'Sarah', friend: 'Joan', brother: 'Marvin', sister: 'Diana'}, { name: 'Morris', friend: 'Tanya', brother: 'Mike', sister: 'Lisa'}, { name: 'Brian', friend: 'Tim', brother: 'Andrew', sister: 'Tanya'}, ]; let filteredArray = namesArray.filter(x => Object.values(x).includes('Tanya') === false); console.log(filteredArray);