with function in js code example
Example 1: javascript function
function myFunc(theObject) {
theObject.make = 'Toyota';
}
var mycar = {make: 'Honda', model: 'Accord', year: 1998};
var x, y;
x = mycar.make; // x gets the value "Honda"
myFunc(mycar);
y = mycar.make; // y gets the value "Toyota"
// (the make property was changed by the function)
Example 2: declare function javascript
function myFunction(var1, var2) {
return var1 * var2;
}