write the callback function that is passed into it as its argument, inline within the function call's parameter list, using the error callbac code example
Example 1: callback function js
function greeting(name) {
alert('Hello ' + name);
}
function processUserInput(callback) {
var name = prompt('Please enter your name.');
callback(name);
}
processUserInput(greeting);
Example 2: javascript callback function
const message = function() {
console.log("This message is shown after 3 seconds");
}
setTimeout(message, 3000);