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...
If you don't want it to throw aTypeError, you can add an extra check: letvalue;value// 👈 null and undefined check&&Object.keys(value).length===0&&value.constructor===Object;value=null;// nullvalue=undefined;// undefined Perfect, no error is thrown 😁 ...
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...
The JavaScript function above takes in an object as a parameter before checking to see whether it is empty or not. If the object is empty, this function will return a boolean TRUE value. If the object isnot empty, then it will return a FALSE value. Basically, this function loops through...
length === 0 // true Object.getOwnPropertyNames({ id: 1, name: 'John Doe' }).length === 0 // false 3rd-Party Libraries If you are already using 3rd-party libraries like jQuery or Lodash in your web application, you can also use them to check if an object is empty: // jQuery...
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.
'declare object variable to hold reference to cell you work with Dim myCell As Range 'identify cell you work with Set myCell = ThisWorkbook.Worksheets("Empty Cell").Range("B9") 'check if cell is empty. Depending on result, display message box indicating whether cell is empty (True) or ...
The std::string class has a built-in method empty() to check if the given string is empty or not. This method is of type bool and returns true when the object does not contain characters. The empty() method does not take any argument and implements a constant time complexity function....
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The function returnsTrueif the object is an instance of the given type. Otherwise, it returnsFalse. Here’s an example of using theisinstance()function to check if a string is an instance of theIterableclass: fromcollections.abcimportIterablemy_string="Nathan"is_iterable=isinstance(my_string,It...