JavaScript TypeError – “X” is not a constructor

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This JavaScript exception is not a constructor that occurs if the code tries to use an object or a variable as a constructor, which is not a constructor.

Message:

TypeError: Object doesn't support this action (Edge)
TypeError: "x" is not a constructor

TypeError: Math is not a constructor
TypeError: JSON is not a constructor
TypeError: Symbol is not a constructor
TypeError: Reflect is not a constructor
TypeError: Intl is not a constructor
TypeError: Atomics is not a constructor

Error Type:

TypeError

Cause of Error: Somewhere the code is trying to use an object or a variable as a constructor, which is not a constructor.

Example 1: In this example, the variable(‘var2’) which is a string, is used as a constructor, So the error has occurred.

Javascript

let var2 = "This is string";
console.log(new var2());

Output(In Edge console):

TypeError: Object doesn't support this action

Example 2: In this example, Math is used as a constructor, So the error has occurred.

Javascript

console.log(new Math());

Output(In Edge console):

TypeError: Object doesn't support this action

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