What are undeclared and undefined variables in js?
Welcome to Answerclub.org
Questions | Answers | Discussions | Knowledge sharing | Communities & more.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Questions | Answers | Discussions | Knowledge sharing | Communities & more.
When variables are not declared in a program, then it is known as Undeclared Variables.
If no variable exists in our program and the program wants to read those variables, it will generate a runtime error.
When there is the declaration of a variable given no value to the variable inside a program is known as an Undefined Variable.
When a program wants to read the variable’s value, then the undefined values are returned.