The "braces" are making an object literal, i.e. they create an object. It is one argument. Example: function someFunc(arg) { alert(arg.foo); ... ... <看更多>

In JavaScript, all function arguments are always passed by value. It means that JavaScript copies the values of the passing variables into arguments inside of ... ... <看更多>

Before an object literal that is the first argument of a function or the first element in an array literal (e.g. foo({a: [{c: d}]}) ). In a ... ... <看更多>

Summary: in this tutorial, you will learn how to use the TypeScript optional parameters for functions. In JavaScript, you can call a function without ... ... <看更多>

Object. The following type expressions are supported: Multiple arguments: string, number, Function; Union types: number | string ... ... <看更多>

This video looks at re-usability and functions. How does defining a function with parameters allow a ... ... <看更多>