如何使用javascript检查子对象是否存在于对象数组中？

var obj = [];

var parent1 = {};

parent1.children = [];

parent1.children.push({
  name: 'parent1_somename1'
})

parent1.children.push({
  name: 'parent1_somename2'
});
obj.push(parent1);

var parent2 = {};

parent2.children = [];

parent2.children.push({
  name: 'parent2_somename1'
})

parent2.children.push({
  name: 'parent2_somename2'
})

obj.push(parent2);

function checkIfExists(arrList, searchedItem) {
  var results = arrList.filter(function(element) {
    var resultsChild = element.children.filter(function(childElement) {
      return childElement.name === searchedItem;
    });

    if (resultsChild.length > 0) {
      return true;
    } else {
      return false;
    }
  })

  return results;
}


function checkIfItHasChildren(arrList) {
  var results = arrList.map(function(element) {
    return element.children.length > 0;

    if (results.length > 0) {
      return true;
    } else {
      return false;
    }
  })

  return results;
}


// Check if specific children exists
if (obj && checkIfExists(obj, 'parent2_somename2').length > 0) {
  console.log("children exists")
} else {
  console.log("children doesnt exist")
}



// Check if array has childrens
if (obj && checkIfItHasChildren(obj).length > 0) {
  console.log("It has children")
} else {
  console.log("It doesnt has children")
}