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Using delete method is the best way to do that, as per MDN description, the delete operator removes a property from an object. So you can simply write:

delete myObject.regex;
// OR
delete myObject['regex'];

The delete operator removes a given property from an object. On successful deletion, it will return true, else false will be returned. However, it is important to consider the following scenarios:

• If the property which you are trying to delete does not exist, delete will not have any effect and will return true

• If a property with the same name exists on the object's prototype chain, then, after deletion, the object will use the property from the prototype chain (in other words, delete only has an effect on own properties).

• Any property declared with var cannot be deleted from the global scope or from a function's scope.

• As such, delete cannot delete any functions in the global scope (whether this is part from a function definition or a function (expression).
• Functions which are part of an object (apart from the
  global scope) can be deleted with delete.

• Any property declared with let or const cannot be deleted from the scope within which they were defined. Non-configurable properties cannot be removed. This includes properties of built-in objects like Math, Array, Object and properties that are created as non-configurable with methods like Object.defineProperty().

The following snippet gives another simple example:

var Employee = {
      age: 28,
      name: 'Alireza',
      designation: 'developer'
    }
    
    console.log(delete Employee.name);   // returns true
    console.log(delete Employee.age);    // returns true
    
    // When trying to delete a property that does 
    // not exist, true is returned 
    console.log(delete Employee.salary); // returns true

For more info about and seeing more example, visit the link below:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete

Using delete method is the best way to do that, as per MDN description, the delete operator removes a property from an object. So you can simply write:

delete myObject.regex;
// OR
delete myObject['regex'];

The delete operator removes a given property from an object. On successful deletion, it will return true, else false will be returned. However, it is important to consider the following scenarios:

• If the property which you are trying to delete does not exist, delete will not have any effect and will return true

• If a property with the same name exists on the object's prototype chain, then, after deletion, the object will use the property from the prototype chain (in other words, delete only has an effect on own properties).

• Any property declared with var cannot be deleted from the global scope or from a function's scope.

• As such, delete cannot delete any functions in the global scope (whether this is part of a function definition or a function (expression).
• Functions which are part of an object (apart from the
  global scope) can be deleted with delete.

• Any property declared with let or const cannot be deleted from the scope within which they were defined. Non-configurable properties cannot be removed. This includes properties of built-in objects like Math, Array, Object and properties that are created as non-configurable with methods like Object.defineProperty().

The following snippet gives another simple example:

var Employee = {
  age: 28,
  name: 'Alireza',
  designation: 'developer'
}

console.log(delete Employee.name);   // returns true
console.log(delete Employee.age);    // returns true

// When trying to delete a property that does 
// not exist, true is returned 
console.log(delete Employee.salary); // returns true

For more info about and seeing more examples visit the link below:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete

Using delete method is the best way to do that, as per MDN description, the delete operator removes a property from an object. So you can simply write:

delete myObject.regex;
// OR
delete myObject['regex'];

The delete operator removes a given property from an object. On successful deletion, it will return true, else false will be returned. However, it is important to consider the following scenarios:

• If the property which you are trying to delete does not exist, delete will not have any effect and will return true

• If a property with the same name exists on the object's prototype chain, then, after deletion, the object will use the property from the prototype chain (in other words, delete only has an effect on own properties).

• Any property declared with var cannot be deleted from the global scope or from a function's scope.

• As such, delete cannot delete any functions in the global scope (whether this is part from a function definition or a function (expression).
• Functions which are part of an object (apart from the
  global scope) can be deleted with delete.

• Any property declared with let or const cannot be deleted from the scope within which they were defined. Non-configurable properties cannot be removed. This includes properties of built-in objects like Math, Array, Object and properties that are created as non-configurable with methods like Object.defineProperty().

The following snippet gives another simple example:

var Employee = {
      age: 28,
      name: 'abc',
      designation: 'developer'
    }
    
    console.log(delete Employee.name);   // returns true
    console.log(delete Employee.age);    // returns true
    
    // When trying to delete a property that does 
    // not exist, true is returned 
    console.log(delete Employee.salary); // returns true

For more info about and seeing more example, visit the link below:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete

Using delete method is the best way to do that, as per MDN description, the delete operator removes a property from an object. So you can simply write:

delete myObject.regex;
// OR
delete myObject['regex'];

The delete operator removes a given property from an object. On successful deletion, it will return true, else false will be returned. However, it is important to consider the following scenarios:

• If the property which you are trying to delete does not exist, delete will not have any effect and will return true

• If a property with the same name exists on the object's prototype chain, then, after deletion, the object will use the property from the prototype chain (in other words, delete only has an effect on own properties).

• Any property declared with var cannot be deleted from the global scope or from a function's scope.

• As such, delete cannot delete any functions in the global scope (whether this is part from a function definition or a function (expression).
• Functions which are part of an object (apart from the
  global scope) can be deleted with delete.

• Any property declared with let or const cannot be deleted from the scope within which they were defined. Non-configurable properties cannot be removed. This includes properties of built-in objects like Math, Array, Object and properties that are created as non-configurable with methods like Object.defineProperty().

The following snippet gives another simple example:

var Employee = {
      age: 28,
      name: 'Alireza',
      designation: 'developer'
    }
    
    console.log(delete Employee.name);   // returns true
    console.log(delete Employee.age);    // returns true
    
    // When trying to delete a property that does 
    // not exist, true is returned 
    console.log(delete Employee.salary); // returns true

For more info about and seeing more example, visit the link below:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete

Using delete method is the best way to do that, as per MDN description, the delete operator removes a property from an object. so you can simply write:

delete myObject.regex;
// OR
delete myObject['regex'];

The delete operator removes a given property from an object. On successful deletion, it will return true, else false will be returned. However, it is important to consider the following scenarios:

• If the property which you are trying to delete does not exist, delete will not have any effect and will return true

• If a property with the same name exists on the object's prototype chain, then, after deletion, the object will use the property from the prototype chain (in other words, delete only has an effect on own properties).

• Any property declared with var cannot be deleted from the global scope or from a function's scope.

• As such, delete cannot delete any functions in the global scope (whether this is part from a function definition or a function (expression).
• Functions which are part of an object (apart from the
  global scope) can be deleted with delete.

• Any property declared with let or const cannot be deleted from the scope within which they were defined. Non-configurable properties cannot be removed. This includes properties of built-in objects like Math, Array, Object and properties that are created as non-configurable with methods like Object.defineProperty().

The following snippet gives another simple example:

var Employee = {
      age: 28,
      name: 'abc',
      designation: 'developer'
    }
    
    console.log(delete Employee.name);   // returns true
    console.log(delete Employee.age);    // returns true
    
    // When trying to delete a property that does 
    // not exist, true is returned 
    console.log(delete Employee.salary); // returns true

For more info about and seeing more example, visit the link below:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete

Using delete method is the best way to do that, as per MDN description, the delete operator removes a property from an object. So you can simply write:

delete myObject.regex;
// OR
delete myObject['regex'];

The delete operator removes a given property from an object. On successful deletion, it will return true, else false will be returned. However, it is important to consider the following scenarios:

• If the property which you are trying to delete does not exist, delete will not have any effect and will return true

• If a property with the same name exists on the object's prototype chain, then, after deletion, the object will use the property from the prototype chain (in other words, delete only has an effect on own properties).

• Any property declared with var cannot be deleted from the global scope or from a function's scope.

• As such, delete cannot delete any functions in the global scope (whether this is part from a function definition or a function (expression).
• Functions which are part of an object (apart from the
  global scope) can be deleted with delete.

• Any property declared with let or const cannot be deleted from the scope within which they were defined. Non-configurable properties cannot be removed. This includes properties of built-in objects like Math, Array, Object and properties that are created as non-configurable with methods like Object.defineProperty().

The following snippet gives another simple example:

var Employee = {
      age: 28,
      name: 'abc',
      designation: 'developer'
    }
    
    console.log(delete Employee.name);   // returns true
    console.log(delete Employee.age);    // returns true
    
    // When trying to delete a property that does 
    // not exist, true is returned 
    console.log(delete Employee.salary); // returns true

For more info about and seeing more example, visit the link below:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete