Find a null inside an object

by Génesis García Morilla

JavaScript

const find_null = obj => JSON.stringify(obj).includes(':null')

// Examples
const obj1 = {
  animals: {
    cat: 'null'
  }
}

const obj2 = {
  animals: {
    manmals: {
      dog: 'Curie',
    	cat: null
    }
  }
}

document.body.innerHTML = `
${JSON.stringify(obj1)} ${find_null(obj1)}
<br>
${JSON.stringify(obj2)} ${find_null(obj2)}
`