How to Call a Function in JavaScript ?
Calling a function in JavaScript is quite straightforward. You use the function name followed by parentheses ()
.
Example 1: Here, sayHello
is the function, and to call it, you simply write sayHello()
. If the function takes parameters, you include them inside the parentheses.
Javascript
function sayHello() { console.log( "Hello, World!" ); } // Calling the function sayHello(); |
Output
Hello, World!
Example 2: Here, the function greet
takes a name
parameter, and when calling it, you provide a value for the parameter like this: greet("Alice")
.
Javascript
function greet(name) { console.log( "Hello, " + name + "!" ); } // Calling the function with an argument greet( "Alice" ); |
Output
Hello, Alice!
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