Filter away object in array with null values JavaScript

Let’s say, we have an array of objects about some employees of a company. But the array contains some bad data i.e., key pointing to empty strings or false values. Our job is to write a function that takes in the array and away the objects that have null or undefined or empty string value for the name key and return the new object.

The array of objects are like this −

let data = [{
   "name": "Ramesh Dhiman",
   "age": 67,
   "experience": 45,
   "description": ""
}, {
      "name": "",
      "age": 31,
      "experience": 9,
      "description": ""
}, {
      "name": "Kunal Dhiman",
      "age": 27,
      "experience": 7,
      "description": ""
}, {
      "name": "Raman Kumar",
      "age": 34,
      "experience": 10,
      "description": ""
}, {
      "name": "",
      "age": 41,
      "experience": 19,
      "description": ""
   }
]

Let’s write the code for this function −

Example

let data = [{
   "name": "Ramesh Dhiman",
   "age": 67,
   "experience": 45,
   "description": ""
}, {
      "name": "",
      "age": 31,
      "experience": 9,
      "description": ""
}, {
      "name": "Kunal Dhiman",
      "age": 27,
      "experience": 7,
      "description": ""
}, {
      "name": "Raman Kumar",
      "age": 34,
      "experience": 10,
      "description": ""
}, {
      "name": "",
      "age": 41,
      "experience": 19,
      "description": ""
   }
]
const filterUnwanted = (arr) => {
   const required = arr.filter(el => {
      return el.name;
   });
   return required;
};
console.log(filterUnwanted(data));

Output

The output in the console will be −

[
   { name: 'Ramesh Dhiman', age: 67, experience: 45, description: '' },
   { name: 'Kunal Dhiman', age: 27, experience: 7, description: '' },
   { name: 'Raman Kumar', age: 34, experience: 10, description: '' }
]

AmitDiwan

Updated on 24-Aug-2020 09:07:24

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