How to get the first portion of object printed by console.log

Question

I have an error object, I have printed it using the code: console.log(error);

The console printed value is:

SigninError {id: "el-20003", description: ""}

I need to get the "SigninError" as string. How to get that?

Answer 1

That string is probably the class name of the object. You can get it like so:

console.log(error.constructor.name)

Note: This may or may not work for you depending on how the Error object class was instantiated and whether or not you use a destructive minifier or a code mangler.

Answer 2

Use Object.keys(error) to get the keys of error object as an array and then use toString() to change it to string value:

 let error = { SigninError:{id: "el-20003", description: ""} } var keys = Object.keys(error); console.log(keys.toString());