Question

In PHP we can specify default value of variable in function like:

function myFunction(myDefaultVariable, myOtherVariable, myCheckVariable = "basic"){
    // so yeah, myDefaultVariable is required always,
    // same applies for myOtherVariable,
    // and myCheckVariable can be skipped in function call, because it has a default value already specified.
}

Is there something similar to this in JavaScript?

Answer 1

You don’t need to pass all the variables in Javascript.

Although a less hacky way would be to use objects:

function foo(args) {
    var text = args.text || 'Bar';

    alert(text);
}

To call it:

foo({ text: 'Hello' }); // will alert "Hello"
foo(); // will alert "Bar" as it was assigned if args.text was null