How to pass a parameter in JavaScript similar to PHP?

Other Questions JavaScript
1

In PHP, I have a function call like this: 

executeFunction( $parameter2 = ‘example_value’ );


function executeFunction( $parameter1, $parameter2 ) {

// execute some operations

}
. In JavaScript, I’m unclear about how to structure this.
executeFunction( parameter2 = ‘example_value’ ); // This seems incorrect.


function executeFunction( parameter1, parameter2 ) {

// execute some operations

}
. My goal is to set parameter2 while keeping parameter1 undefined. How can I adjust the function call in JavaScript?

2

To achieve behavior similar to PHP's default parameter values in JavaScript, where you want to set only the second parameter while leaving the first undefined, you can make use of ES6 default parameters and the rest parameter syntax.

Here's a practical way to implement it:

function executeFunction(parameter1, parameter2 = 'example_value') {
  // execute operations with parameter1 and parameter2
}

// You can call the function like this
executeFunction(undefined, 'custom_value');

### Explanation:

  • Default Parameter Values: JavaScript allows setting default values directly in the function declaration which will be used if the parameter is undefined.
  • Passing Undefined: By explicitly passing undefined for parameter1, you can skip to the second parameter.
  • Simple and Effective: This approach is a straightforward way to handle default parameters without needing additional checks or complex setups.

This method ensures your code remains clean and efficient, helping you focus on core logic without unnecessary complexity.