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objelity

v1.1.2

Published

## api --- ### deepKeys(obj) ---

Downloads

6

Readme

Object + Utility

objelity

api


deepKeys(obj)


object内すべてのdeepKey(path)を取得します。

Since

1.0.0

Arguments

Object (Object | Array)

Returns

Array

Example

var _keys, obj;
obj = {
  a: {
    b: {
      c: [1, 2, 3]
    },
    d: new Date()
  },
  e: {
    f: {
      g: 'h'
    }
  }
};
objelity.deepKeys(obj);
// => ['a.b.c.0', 'a.b.c.1', 'a.b.c.2', 'a.d', 'e.f.g']
obj = [
  {
    name: 'alice',
    age: 17
  },
  {
    name: 'bob',
    age: 32
  },
  {
    name: 'charlie',
    age: 25
  }
];
objelity.deepKeys(obj);
// => ['0.name', '0.age', '1.name', '1.age', '2.name', '2.age']

compactObject(obj)


objectから値がnullundefinedの要素を除去します

Since

1.0.0

Arguments

Object (Object | Array)

Returns

Object

Example

var obj;
obj = {
  aaa: {
    bbb: {
      ccc: 1,
      ddd: 0
    },
    eee: {
      fff: undefined,
      ggg: null
    },
    hhh: {
      iii: {
        jjj: true
      }
    }
  }
};
objelity.compactObject(obj);
// =>
{
  aaa: {
    bbb: {
      ccc: 1,
      ddd: 0
    },
    hhh: {
      iii: {
        jjj: true
      }
    }
  }
}

flattenObject(obj, separator)


objectをflatten(フラット化)します

Since

1.0.0

Arguments

Object (Object | Array)

Returns

Object

Example

var obj;
obj = {
  aaa: {
    bbb: {
      ccc: 1,
      ddd: 0
    },
    eee: {
      fff: void 0,
      ggg: null
    },
    hhh: {
      iii: {
        jjj: true
      }
    }
  }
};
objelity.flattenObject(obj);
// =>
{
  aaa_bbb_ccc: 1,
  aaa_bbb_ddd: 0,
  aaa_eee_fff: void 0,
  aaa_eee_ggg: null,
  aaa_hhh_iii_jjj: true
}

objelity.flattenObject(obj, '-'); 
// =>
{
  'aaa-bbb-ccc': 1,
  'aaa-bbb-ddd': 0,
  'aaa-eee-fff': void 0,
  'aaa-eee-ggg': null,
  'aaa-hhh-iii-jjj': true
}

eachObject(obj, fn)


objectのすべての要素をイテレートします。

Since

1.0.0

Arguments

Object (Object | Array) callback (val, path, index, object)

Returns

void

Example

var obj;
obj = {
  aaa: {
    bbb: {
      ccc: 1,
      ddd: 2
    },
    eee: {
      fff: 3,
      ggg: 4
    }
  }
};
objelity.eachObject(obj, function(val, path, index, object) {
  console.log(val, path, index);
});

// =>
1 'aaa.bbb.ccc' 0
2 'aaa.bbb.ddd' 1
3 'aaa.eee.fff' 2
4 'aaa.eee.ggg' 3

mapObject(obj, fn)


objectのすべての要素をイテレートします。

Since

1.0.0

Arguments

Object (Object | Array) callback (val, path, index, object)

Returns

Array

Example

// changing values
var obj;
obj = {
  aaa: {
    bbb: {
      ccc: 1,
      ddd: 2
    },
    eee: {
      fff: 3,
      ggg: 4
    }
  }
};
objelity.mapObject(obj, function(val, path, index, object) {
  return val * 2;
});
// =>
{
  aaa: {
    bbb: {
      ccc: 2,
      ddd: 4
    },
    eee: {
      fff: 6,
      ggg: 8
    }
  }
}
// returning array
var obj;
obj = {
  aaa: {
    bbb: {
      ccc: 1,
      ddd: 0
    },
    eee: {
      fff: void 0,
      ggg: null
    }
  }
};
objelity.mapObject(obj, function(val, path, index, object) {
  var newPath;
  if (path.match(/aaa\.bbb/)) {
    newPath = path.replace('aaa.bbb', 'xxx');
    return [newPath, val];
  } else {
    return [path, val];
  }
});
// =>
{
  xxx: {
    ccc: 1,
    ddd: 0
  },
  aaa: {
    eee: {
      fff: void 0,
      ggg: null
    }
  }
})
// returning an object
var obj;
obj = {
  aaa: {
    bbb: {
      ccc: 1,
      ddd: 0
    },
    eee: {
      fff: void 0,
      ggg: null
    }
  }
};
objelity.mapObject(obj, function(val, path, index, object) {
  var newPath;
  if (path.match(/aaa\.bbb/)) {
    newPath = path.replace('aaa.bbb', 'xxx');
    return {
      [newPath]: val
    };
  } else {
    return {
      [path]: val
    };
  }
});
// =>
{
  xxx: {
    ccc: 1,
    ddd: 0
  },
  aaa: {
    eee: {
      fff: void 0,
      ggg: null
    }
  }
})

toText(val)


toStringの変形です。objectの場合はJSON.stringifyします。

Since

1.0.0

Arguments

val (any)

Returns

string

Example

objelity.toText({a: 1});
// => The return value is a string
// {
//   "a": 1
// }

objelity.toText([1, 2, 3]);
// => The return value is a string
// [
//   1,
//   2,
//   3
// ]

objelity.toText(() => {return true;};);
// => The return value is a string
// (() => {
//   return true;
// })()

objelity.toText('str');
// => The return value is a string
// 'str'

objelity.toText(123);
// => The return value is a string
// '123'

objelity.toText(undefined);
// => The return value is a string
// 'undefined'

objelity.toText(null);
// => The return value is a string
// 'null'

objelity.toText(true);
// => The return value is a string
// 'true'

objelity.toText(0/0);
// => The return value is a string
// 'NaN'

filterObject(obj, fn)


objectのすべての要素をイテレートします。 callbackで真の値を返した要素を抽出します。 新しいobjectを返します。

Since

1.0.0

Arguments

Object (Object | Array) callback (val, path, index, object)

Returns

Object

Example

var obj = {
  aaa: {
    bbb: {
      ccc: 1,
      ddd: 2
    },
    eee: {
      fff: 3,
      ggg: 4
    }
  }
};
objelity.filterObject(obj, function(val, path, index, object) {
  return val % 2 === 0;
});
// =>
aaa: {
  bbb: {
    ddd: 2
  },
  eee: {
    ggg: 4
  }
}
obj = {
  a: {
    aa: 11,
    bb: 22
  },
  b: 2,
  c: 3
};
objelity.rejectObject(obj, ['a','c'])
// => short hand for path 'a' and 'c'
{
  a: {
    aa: 11,
    bb: 22
  },
  c: 3
}
objelity.rejectObject(obj, ['a.b', 'c'])
// => path 'a.b' is included in 'a.bb'
{
  a: {
    bb: 22
  },
  c: 3
}

rejectObject(obj, fn)


objectのすべての要素をイテレートします。 callbackで真の値を返した要素を削除します。 新しいobjectを返します。

Since

1.0.0

Arguments

Object (Object | Array) callback (val, path, index, object)

Returns

Object

Example

var obj = {
  aaa: {
    bbb: {
      ccc: 1,
      ddd: 2
    },
    eee: {
      fff: 3,
      ggg: 4
    }
  }
};
objelity.rejectObject(obj, function(val, path, index, object) {
  return val % 2 === 0;
});
// =>
{
  aaa: {
    bbb: {
      ccc: 1
    },
    eee: {
      fff: 3
    }
  }
})
obj = {
  a: {
    aa: 11,
    bb: 22
  },
  b: 2,
  c: 3
};
objelity.rejectObject(obj, ['a'])
// => short hand for path 'a'
{
  b: 2,
  c: 3
}
objelity.rejectObject(obj, ['a.b', 'c'])
// => path 'a.b' is included in 'a.bb'
{
  a: {
    aa: 11
  },
  b: 2
})

stringify(obj, replacer, space)


通常のJSON.stringifyに加えて複数の項目もstringifyします。

Since

1.1.0

Arguments

Object (Any) replacer (fanction (key, value)) space (Number | String)

Returns

String

Example

obj = {
  undefined: void 0,
  function: function() {
    return true;
  },
  generator: function*() {
    return (yield 0);
  },
  RegExp: /foo/,
  newReg: new RegExp('foo'),
  err: new Error('unknown error'),
  NaN: 0 / 0
};
JSON.stringify(obj, null, 2);
// =>
// {
//   NaN: null,
//   RegExp: {},
//   err: {},
//   newReg: {},
// }

objelity.stringify(obj, null, 2);

// =>
// {
//   NaN: '[object Number] NaN',
//   RegExp: '[object RegExp] /foo/',
//   err: '[object Error] Error: unknown error',
//   function: `(function () {␊
//           return true;␊
//         }()`,
//   generator: `(function* () {␊
//           return yield 0;␊
//         }()`,
//   newReg: '[object RegExp] /foo/',
//   undefined: '[object Undefined] undefined',
}

pickValue(obj, fn)


filterObjectして残った要素の値を1つ返します。 複数の要素が当てはまる場合は最初の要素の値が返ります。 ただしobjectは順番が保証されません。最初の要素が何になるかはわかりません。

Since

1.1.1

Arguments

Object (Object | Array) callback (val, path, index, object)

Returns

Any

Example

var obj = {
  aaa: {
    bbb: {
      ccc: 1,
      ddd: 2
    },
    eee: {
      fff: 3,
      ggg: 4
    }
  }
};
objelity.pickValue(obj, function(val, path, index, object) {
  return path.includes('aaa');
}); // => 1
// 条件がすべての要素に当てはまっています。最初のcccがpickされています。

objelity.pickValue(obj, function(val, path, index, object) {
  return val % 2 === 0;
}); //=> 2
// bbbとgggが条件に合致しています。最初のbbbがpickされています。

objelity.pickValue(obj, function(val, path, index, object) {
  return /fff|ggg/.test(path);
}); //=> 3
// fffとgggが条件に合致しています。最初のfffがpickされています。

pickObject(obj, fn)


filterObjectして残った要素を1つ返します。 複数の要素が当てはまる場合は最初の要素の値が返ります。 ただしobjectは順番が保証されません。最初の要素が何になるかはわかりません。

Since

1.1.1

Arguments

Object (Object | Array) callback (val, path, index, object)

Returns

Object

Example

var obj = {
  aaa: {
    bbb: {
      ccc: 1,
      ddd: 2
    },
    eee: {
      fff: 3,
      ggg: 4
    }
  }
};
objelity.pickObject(obj, function(val, path, index, object) {
  return path.includes('aaa');
}); // => {aaa:{bbb:{ccc:1}}}
// 条件がすべての要素に当てはまっています。最初のcccがpickされています。

objelity.pickObject(obj, function(val, path, index, object) {
  return val % 2 === 0;
}); //=> {aaa:{bbb:{ddd:2}}}
// bbbとgggが条件に合致しています。最初のbbbがpickされています。

objelity.pickObject(obj, function(val, path, index, object) {
  return /fff|ggg/.test(path);
}); //=> {aaa:{eee:{fff:3}}}
// fffとgggが条件に合致しています。最初のfffがpickされています。