Use Default Parameters in Functions
When dealing with the functions ensure that objects passed as arguments are not undefined using the default parameters.
function setName(person = {}) {
person.name = "John Doe";
return person;
}
let person = setName(); // Call without argument
console.log(person); // { name: 'John Doe' }
How to Fix JavaScript TypeError: Cannot Set Properties of Undefined?
JavaScript is a versatile and widely used programming language but like any language, it can sometimes produce errors that can be tricky to debug. One common error that developers is the TypeError: Cannot set properties of the undefined. This error typically occurs when we attempt to assign a value to the property of an undefined object. In this article, we will explore the causes of this error how to identify it, and the steps taken to fix it.
Contact Us