sample practice functions

sample

by srikar7

HTML

<!DOCTYPE html>
<html>

  <head>
    <p>sample practice</p>
    <button type="button" onclick="myFunction()">Count!</button>
  </head>

  <body>
    <p id="demo"></p>
    <p id="demo1"></p>
    <p id="demo2"></p>
    <p id="demo3"></p>
    <p id="demo4">0</p>
  </body>

</html>

JavaScript

//function expression stored in variable and variable used as function
var x = function(a) {
  var d = a;
  return d
}
document.getElementById("demo").innerHTML = x("rajj");

// calling a function and return result and stored in a variable
var f = myfunction();
document.getElementById("demo1").innerHTML = f;

function myfunction() {
  var d = "sam";
  return d;
}

//self invoking function with out name//
(function() {
  var f = "df";
  document.getElementById("demo2").innerHTML = f;
})()

//
function mfunction(d) {
  var a = d
  return a
}
document.getElementById("demo3").innerHTML = mfunction("fg");

var add = (function () {
    var counter = 0;
    return function () {counter += 1; return counter;}
})();

function myFunction(){
    document.getElementById("demo4").innerHTML = add();
}