Function Parameters

Functions can take in external information in the form of variables or directly through function parameters. They are specified inside the parenthesis after the function name. Multiple parameters can be separated by commas.

Function parameters are given a variable name inside the parenthesis during function declaration. The desired values are passed when the function call is invoked. Below code block demonstrate some examples of specifying function parameters and calling functions with parameters.

1function func1(name) {
2    console.log("Hello I am " + name);
3}
4
5function add(a, b, c) {
6    let d = a + b + c;
7    console.log("Sum of a, b, and c is: " + d);
8}
9
10func1("Beth");
11add(2, 3, 4);

Note: Here the variable d is of type int. We usestr(d)to convert the type of variabledfrominttostring, as string concatenation only works with two variables of typestring. Concatenation ofstringandint` would generate an error.