Javascript Function Optional Parameter 3 Ways Examples Code

Javascript Function Optional Parameter 3 Ways Examples Code Declaring optional function parameters in javascript means defining function parameters that aren't required when the function is called. you can assign default values to these parameters using the = syntax, so if no argument is provided, the default value is used instead. Starting with ecmascript 2015 (es6), the language introduced a clear way to declare default parameters. here’s an example: console.log(`value of a: ${a}, value of b: ${b}`); in this case, if the caller does not provide a value for b, it automatically defaults to 0.

Javascript Function Optional Parameter 3 Ways Examples Code Default parameters in javascript can be implemented in mainly two ways: use this if you specifically want to know if b was passed if (b === undefined) { b was not passed . use this if you know that a truthy value comparison will be enough if (b) { b was passed and has truthy value . } else { b was not passed or has falsy value .

Javascript Function Parameter Naukri Code 360

Javascript Function With An Optional Parameter Maker S Aid

How To Declare Optional Function Parameters In Javascript Flexiple