Function parameters can be assigned default values. While calling the function, if a parameter is omitted, the default value assigned to the parameter is used:
function render(fog_level=0, spark_level=100){
console.log(`Fog Level: ${fog_level} and spark_level:
${spark_level}`)
}
render(10); //Fog Level: 10 and spark_level: 100
In this example, we are omitting the spark_level parameter, and hence the default value assigned to the parameter is used. It is important to note that undefined is considered as an absence of parameter value; consider the following line of code, for example:
render(undefined,10); //Fog Level: 0 and spark_level: 10
While providing default values of parameters, it is possible to refer to other parameters as well:
function t(fog_level=1, spark_level=fog_level){
console.log(`Fog Level: ${fog_level} and spark_level:
${spark_level}`)
//Fog Level: 10 and...