Explore an array of objects in JavaScript to find objects that are not empty

Question

Explore an array of objects in JavaScript to find objects that are not empty

Addressing the heart of my issue:

[
  {amount: 0, name: "", icon: "", description: ""} // default object inserted into array
  {amount: 1, name: "kjfhdkfjh", icon: "67", description: "dasdasd"}
]

I am seeking guidance on utilizing lodash find to determine whether an object should be considered "empty" based on the presence of non-zero or non-empty string values in any key.

In this scenario, using lodash find would result in:

[
  {amount: 1, name: "kjfhdkfjh", icon: "67", description: "dasdasd"}
]

Alternatively, it could return undefined.

This is what I currently have:

lodashFind(theArray, function(obj){
   // How do I proceed to iterate through the objects?
});

I am uncertain how to iterate over the objects and implement a logic that returns an object if amount is not 0 and no strings are empty.

Any suggestions?

javascript lodash

Answer 1

Answer №1

To accomplish this task, you can utilize the functions _.filter, _.some, _.all, or _.negate from the popular library lodash.

var data = [
    { name:'a', age:0 },
    { name:'b', age:1 },
    { name:'',  age:0 }
];

// Filters out non-empty objects (at least one non-empty field)
console.log(_.filter(data, _.some));
// Result: [{name:'a',age:0},{name:'b',age:1}]

// Filters out fully populated objects (no empty fields)
console.log(_.filter(data, _.all));
// Result: [{name:'b',age:1}]

// Filters out completely empty objects (only empty fields)
console.log(_.filter(data, _.negate(_.some)));
// Result: [{name:'',age:0}]

The functions _.some and _.all specifically look for values that are considered "truthy". Keep in mind that empty strings ('') and zeros (0) are not truthy in JavaScript. Common falsy values include

false, 0, '', null, undefined, NaN

. Everything else is treated as truthy.

Answer 2

To accomplish this task, you can utilize the functions _.filter, _.some, _.all, or _.negate from the popular library lodash.

var data = [
    { name:'a', age:0 },
    { name:'b', age:1 },
    { name:'',  age:0 }
];

// Filters out non-empty objects (at least one non-empty field)
console.log(_.filter(data, _.some));
// Result: [{name:'a',age:0},{name:'b',age:1}]

// Filters out fully populated objects (no empty fields)
console.log(_.filter(data, _.all));
// Result: [{name:'b',age:1}]

// Filters out completely empty objects (only empty fields)
console.log(_.filter(data, _.negate(_.some)));
// Result: [{name:'',age:0}]

The functions _.some and _.all specifically look for values that are considered "truthy". Keep in mind that empty strings ('') and zeros (0) are not truthy in JavaScript. Common falsy values include

false, 0, '', null, undefined, NaN

. Everything else is treated as truthy.

Answer 3

Answer №2

With standard JavaScript, accomplishing this task is rather straightforward. All you have to do is filter the array based on the values of the objects contained within it. Here's an example:

var arr = [
  {amount: 0, name: "", icon: "", description: ""},
  {amount: 1, name: "example", icon: "67", description: "description"}
]

arr = arr.filter(function(o) {
  return Object.keys(o).filter(function(key) {
    return o[key] != 0 && o[key].toString().trim().length > 0;
  }).length > 0;
});

FIDDLE

Answer 4

With standard JavaScript, accomplishing this task is rather straightforward. All you have to do is filter the array based on the values of the objects contained within it. Here's an example:

var arr = [
  {amount: 0, name: "", icon: "", description: ""},
  {amount: 1, name: "example", icon: "67", description: "description"}
]

arr = arr.filter(function(o) {
  return Object.keys(o).filter(function(key) {
    return o[key] != 0 && o[key].toString().trim().length > 0;
  }).length > 0;
});

FIDDLE

Explore an array of objects in JavaScript to find objects that are not empty

Answer №1

Answer №2

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