Javascript: Check If Object Is Not Null In

In JavaScript, typeof null famously returns "object" , which is a historical bug. To verify that a variable is a non-null object (and not an array or other primitive), use a combined check: javascript

Often, you want to ensure a variable is neither null nor undefined . Using the loose inequality operator ( != ) covers both at once. javascript Check If Object Is Not Null In Javascript

To check if an object is not null in JavaScript, use the strict inequality operator: if (myObject !== null) . In JavaScript, typeof null famously returns "object" ,

Use this when you only care if the value is exactly null . It will return true even if the variable is undefined , 0 , or an empty string. javascript if (myObject !== null) { // Runs if myObject is NOT null } Use code with caution. Copied to clipboard 2. The "Nullish" Check (Recommended) javascript To check if an object is not

const isRealObject = (val) => typeof val === 'object' && val !== null && !Array.isArray(val); if (isRealObject(myObject)) { // Safely work with object properties } Use code with caution. Copied to clipboard 4. Simple Truthiness Check How to check if a Variable Is Not Null in JavaScript