Remove property key using filter()

Question

var a = [{'id':1,'name':'James','age':11}];

a = a.filter(function( obj,i ) {
            //return obj != 'age';
          });

filter will create a new array, but how to splice away the age property key? Didn't use jquery, can't use $.grep in this case. and won't use delete because it's not really delete the key but leave an empty slot.

Answer 1

Use Array#forEach and delete operator to delete the key

var a = [{
  'id': 1,
  'name': 'James',
  'age': 11
}, {
  'id': 2,
  'name': 'James2'
}];

a.forEach(function(obj, i) {
  obj['age'] && delete obj['age'];
});
console.log(a);