function javascript

1function idk() {
2	alert('This is an alert!')
3}
4//call the function to make the function run by saying "Name of function + ()"
5idk()

1var x = myFunction(4, 3);     // Function is called, return value will end up in x
2
3function myFunction(a, b) {
4    return a * b;             // Function returns the product of a and b
5}

1function myFunc(theObject) {
2  theObject.make = 'Toyota';
3}
4
5var mycar = {make: 'Honda', model: 'Accord', year: 1998};
6var x, y;
7
8x = mycar.make; // x gets the value "Honda"
9
10myFunc(mycar);
11y = mycar.make; // y gets the value "Toyota"
12                // (the make property was changed by the function)
13

1function name( parameter1 ,parameter 2,..)  //name signifies funcname
2{
3  
4}  

1A JavaScript function is defined with the function keyword,
2  followed by a name, followed by parentheses ().
3
4Function names can contain letters, digits, underscores,
5and dollar signs (same rules as variables).
6
7The parentheses may include parameter names separated by commas:
8(parameter1, parameter2, ...)
9
10The code to be executed, by the function, is placed inside curly brackets: {}
11
12_____________________________________________________
13function name(parameter1, parameter2, parameter3) {
14  // code to be executed
15}
16
17____________________________________________________
18let x = myFunction(4, 3);   // Function is called, return value will end up in x
19
20function myFunction(a, b) {
21  return a * b;             // Function returns the product of a and b
22}
23

1function myFunction() {
2  alert("Hello World!");
3}
4myFunction;