How to Check If an Object Is Empty in JavaScript Use Object.keys Loop Over Object Properties With for…in Use JSON.stringify Use jQuery Use Underscore and Lodash Libraries 1. Use Object.keys Object.keys will return an array, which contains the property names of the object. If the length of...
In your day-to-day JavaScript development, you might need to check if an object is empty or not. And if you’ve had to do this, you probably know that there’s no single direct solution. However, there are different techniques that you can use to create a custom solution for your own...
Here's a Code Recipe to check if an object is empty or not. For newer browsers, you can use plain vanilla JS and use the new "Object.keys" 🍦 But for older browser support, you can install the Lodash library and use their "isEmpty" method 🤖 ...
The Object.keys() method is the best way to check if an object is empty because it is supported by almost all browsers, including IE9+. It returns an array of a given object's own property names. So we can simply check the length of the array afterward: Object.keys({}).length ==...
The reason for this is thatObject.keys()has to return an array of the object’s keys before the length can be checked, whereas the method used in the first example will break out of the loop as soon as a key is discovered. Using jQuery to check if an object is empty. ...
Read this tutorial and find methods of checking whether a JavaScript object is empty or not. Choose the best one for you and get the code immediately.
This method determines whether the object has the specified property as a direct property of that object. Unlike the in operator, hasOwnProperty does not check for a property in the object's prototype chain. If an object is an Array, this method can check whether an index exists...
Here is an example of this method in action: let obj = {}; if (JSON.stringify(obj) === "{}") { console.log("The object is empty"); } else { console.log("The object is not empty"); } You can also use the for...in loop to check if an object is empty or not, which ...
The best way to check if an array is empty in JavaScript is by using the Array.isArray() method (ES5+) and array's length property together like so: // ES5+ if (!Array.isArray(array) || !array.length) { // ... } Similarly, using else, or the inverse would che...
typeof check: if (typeof str === "string") Checks if str is of type "string", which applies to string literals. It does not return "string" for new String() because new String() is an object. Fallback: return "another type"; Handles cases where str is neither a string literal ...