calculator.display ();

let calculator = (function(){

display: function () { console.log ( "Result:", data.number); }

calculator.sum (3);

return { sum: function (n) { data.number + = n; },

calculator.sum (10);

let data = {number: 0};

} }) ();

$(" … ").click(function(){

$ (…) .hide ();

$( … ).ready (function (){

<script type="text/… ">

} ); } ); </… >

<input type=" submit " … ="Submit">

<label … ="choose"> e-mail </label>

<input type=" text" id="choose" … ="i_like" required>

<label for="choose"> … </label>

<… form >

<input type=" text " id="choose" name ="mail" … >

<form action ="handler.php" method=" … ">

$(“h3”)

$(“ul li:first”)

$("#header")

$(“.photo”)

$(“ul li”)

<input type=" submit " … ="Submit">

</ … >

<label … ="choose"> e-mail </label>

<input type=" text" id="choose" … ="i_like" required>

<label for="choose"> … </label>

<input type=" … " id="choose" name ="mail" required>

<form … ="handler.php" method=" post ">