letvalue;value// 👈 null and undefined check&&Object.keys(value).length===0&&value.constructor===Object;value=null;// nullvalue=undefined;// undefined Perfect, no error is thrown 😁 #B. Empty Object Check in Older Browsers What if you need to support older browsers? Heck, who am I...
1. Use Object.keys Object.keys will return an array, which contains the property names of the object. If the length of the array is 0, then we know that the object is empty. function isEmpty(obj) { return **Object.keys(obj).length === 0**; } We can also check this using Objec...
The Object.keys() method returns an array of enumerable property names of a given object. And thus, we can use it to check if an object has any properties by counting the length of this array. Let’s have a look at the following example. 1 function isEmptyObject(obj) { 2 return ...
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 the object while checking to see if a property exists. If an object property is found, then it returns a TRUE va...
For JavaScript objects, there is no built-in .length or .isEmpty method available to check if they are empty. Here are 4 different methods that you can use to make sure that a given object does not have its own properties: Object.entries() Method The Object.entries() method takes an ...
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.
It is an array of objects, basically I have an array which holds all the patients that are checked in, and I have a function which checks out patients. When I check out a patient, I need to remove the object from the array since it is no longer checked in. ...
2. Check String is Empty using len()The Python len() is used to get the total number of characters present in the string and check if the length of the string is 0 to identify the string is empty. Actually, the len() function returns the length of an object. The object can be a...
To check if a cell is empty, you can use VBA’s ISEMPTY function. In this function, you need to use the range object to specify the cell you want to check, and it returns true if that cell is empty; otherwise false. You can use a message box or a cell to get the result. ...
'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 ...