callbackFunction

by azhwani

JavaScript

function foo(value, callback) {  
    var newvalue = value*2;
    alert(callback(newvalue));
}

// USING ANONYMOUS FUNCTION

foo(5, function(val) {
    return val*2;
});

// USING NORMAL FUNCTION

foo(10,callbackme)

function callbackme(val){
    return val*10;
}