• Nullish Coalescing Operator (??)

The ?? operator is used to provide a default value when dealing with null or undefined. It checks if the left-hand side is either null or undefined, and if it is, it returns the right-hand side value.

let value = null;
let defaultValue = "DefaultValue";

let result = value ?? defaultValue;
console.log(result); 
// Output: DefaultValue

• Safe assignment operator (?=) [Proposed]

The Safe Assignment Operator (?=) is a simple solution for error handling. Instead of wrapping code in complex try/catch blocks, ?= allows you to handle errors directly within assignments, making your code easier to read and manage.

try {
  const result = errorCausingFunction();
  // More logic with result
} catch (error) {
  console.error('An error occurred:', error);
}

Now you can handle this try/catch block in one line

const result ?= errorCausingFunction();

• Double Exclamation Mark (!!)

The !! operator is a trick used to convert a value to a boolean (true or false). This is useful when you want to check if a value is truthy or falsy.

Step up your validation game using this operator

let value = ''

// Basic Approach
if (value === null || value === undefined || value === '') {
  console.log("Value is null, undefined, or an empty string");
} 

// Advanced Approach
if(!!value) {
  console.log("Value is null, undefined, or an empty string");
}

Happy Coding!