"use strict"; !function (NioApp, $) { "use strict"; NioApp.Package.name = "DashLite"; NioApp.Package.version = "2.3"; var $win = $(window), $body = $('body'), $doc = $(document), //class names _body_theme = 'nio-theme', _menu = 'nk-menu', _mobile_nav = 'mobile-menu', _header = 'nk-header', _header_menu = 'nk-header-menu', _sidebar = 'nk-sidebar', _sidebar_mob = 'nk-sidebar-mobile', //breakpoints _break = NioApp.Break; function extend(obj, ext) { Object.keys(ext).forEach(function (key) { obj[key] = ext[key]; }); return obj; } // ClassInit @v1.0 NioApp.ClassBody = function () { NioApp.AddInBody(_sidebar); }; // ClassInit @v1.0 NioApp.ClassNavMenu = function () { NioApp.BreakClass('.' + _header_menu, _break.lg, { timeOut: 0 }); NioApp.BreakClass('.' + _sidebar, _break.lg, { timeOut: 0, classAdd: _sidebar_mob }); $win.on('resize', function () { NioApp.BreakClass('.' + _header_menu, _break.lg); NioApp.BreakClass('.' + _sidebar, _break.lg, { classAdd: _sidebar_mob }); }); }; // Code Prettify @v1.0 NioApp.Prettify = function () { window.prettyPrint && prettyPrint(); }; // Copied @v1.0 NioApp.Copied = function () { var clip = '.clipboard-init', target = '.clipboard-text', sclass = 'clipboard-success', eclass = 'clipboard-error'; // Feedback function feedback(el, state) { var $elm = $(el), $elp = $elm.parent(), copy = { text: 'Copy', done: 'Copied', fail: 'Failed' }, data = { text: $elm.data('clip-text'), done: $elm.data('clip-success'), fail: $elm.data('clip-error') }; copy.text = data.text ? data.text : copy.text; copy.done = data.done ? data.done : copy.done; copy.fail = data.fail ? data.fail : copy.fail; var copytext = state === 'success' ? copy.done : copy.fail, addclass = state === 'success' ? sclass : eclass; $elp.addClass(addclass).find(target).html(copytext); setTimeout(function () { $elp.removeClass(sclass + ' ' + eclass).find(target).html(copy.text).blur(); $elp.find('input').blur(); }, 2000); } // Init ClipboardJS if (ClipboardJS.isSupported()) { var clipboard = new ClipboardJS(clip); clipboard.on('success', function (e) { feedback(e.trigger, 'success'); e.clearSelection(); }).on('error', function (e) { feedback(e.trigger, 'error'); }); } else { $(clip).css('display', 'none'); } ; }; // CurrentLink Detect @v1.0 NioApp.CurrentLink = function () { var _link = '.nk-menu-link, .menu-link, .nav-link', _currentURL = window.location.href, fileName = _currentURL.substring(0, _currentURL.indexOf("#") == -1 ? _currentURL.length : _currentURL.indexOf("#")), fileName = fileName.substring(0, fileName.indexOf("?") == -1 ? fileName.length : fileName.indexOf("?")); $(_link).each(function () { var self = $(this), _self_link = self.attr('href'); if (fileName.match(_self_link)) { self.closest("li").addClass('active current-page').parents().closest("li").addClass("active current-page"); self.closest("li").children('.nk-menu-sub').css('display', 'block'); self.parents().closest("li").children('.nk-menu-sub').css('display', 'block'); } else { self.closest("li").removeClass('active current-page').parents().closest("li:not(.current-page)").removeClass("active"); } }); }; // PasswordSwitch @v1.0 NioApp.PassSwitch = function () { NioApp.Passcode('.passcode-switch'); }; // Toastr Message @v1.0 NioApp.Toast = function (msg, ttype, opt) { var ttype = ttype ? ttype : 'info', msi = '', ticon = ttype === 'info' ? 'ni ni-info-fill' : ttype === 'success' ? 'ni ni-check-circle-fill' : ttype === 'error' ? 'ni ni-cross-circle-fill' : ttype === 'warning' ? 'ni ni-alert-fill' : '', def = { position: 'bottom-right', ui: '', icon: 'auto', clear: false }, attr = opt ? extend(def, opt) : def; attr.position = attr.position ? 'toast-' + attr.position : 'toast-bottom-right'; attr.icon = attr.icon === 'auto' ? ticon : attr.icon ? attr.icon : ''; attr.ui = attr.ui ? ' ' + attr.ui : ''; msi = attr.icon !== '' ? '<span class="toastr-icon"><em class="icon ' + attr.icon + '"></em></span>' : '', msg = msg !== '' ? msi + '<div class="toastr-text">' + msg + '</div>' : ''; if (msg !== "") { if (attr.clear === true) { toastr.clear(); } var option = { "closeButton": true, "debug": false, "newestOnTop": false, "progressBar": false, "positionClass": attr.position + attr.ui, "closeHtml": '<span class="btn-trigger">Close</span>', "preventDuplicates": true, "showDuration": "1500", "hideDuration": "1500", "timeOut": "2000", "toastClass": "toastr", "extendedTimeOut": "3000" }; toastr.options = extend(option, attr); toastr[ttype](msg); } }; // Toggle Screen @v1.0 NioApp.TGL.screen = function (elm) { if ($(elm).exists()) { $(elm).each(function () { var ssize = $(this).data('toggle-screen'); if (ssize) { $(this).addClass('toggle-screen-' + ssize); } }); } }; // Toggle Content @v1.0 NioApp.TGL.content = function (elm, opt) { var toggle = elm ? elm : '.toggle', $toggle = $(toggle), $contentD = $('[data-content]'), toggleBreak = true, toggleCurrent = false, def = { active: 'active', content: 'content-active', "break": toggleBreak }, attr = opt ? extend(def, opt) : def; NioApp.TGL.screen($contentD); $toggle.on('click', function (e) { toggleCurrent = this; NioApp.Toggle.trigger($(this).data('target'), attr); e.preventDefault(); }); $doc.on('mouseup', function (e) { if (toggleCurrent) { var $toggleCurrent = $(toggleCurrent), $s2c = $('.select2-container'), $dpd = $('.datepicker-dropdown'), $tpc = $('.ui-timepicker-container'); if (!$toggleCurrent.is(e.target) && $toggleCurrent.has(e.target).length === 0 && !$contentD.is(e.target) && $contentD.has(e.target).length === 0 && !$s2c.is(e.target) && $s2c.has(e.target).length === 0 && !$dpd.is(e.target) && $dpd.has(e.target).length === 0 && !$tpc.is(e.target) && $tpc.has(e.target).length === 0) { NioApp.Toggle.removed($toggleCurrent.data('target'), attr); toggleCurrent = false; } } }); $win.on('resize', function () { $contentD.each(function () { var content = $(this).data('content'), ssize = $(this).data('toggle-screen'), toggleBreak = _break[ssize]; if (NioApp.Win.width > toggleBreak) { NioApp.Toggle.removed(content, attr); } }); }); }; // ToggleExpand @v1.0 NioApp.TGL.expand = function (elm, opt) { var toggle = elm ? elm : '.expand', def = { toggle: true }, attr = opt ? extend(def, opt) : def; $(toggle).on('click', function (e) { NioApp.Toggle.trigger($(this).data('target'), attr); e.preventDefault(); }); }; // Dropdown Menu @v1.0 NioApp.TGL.ddmenu = function (elm, opt) { var imenu = elm ? elm : '.nk-menu-toggle', def = { active: 'active', self: 'nk-menu-toggle', child: 'nk-menu-sub' }, attr = opt ? extend(def, opt) : def; $(imenu).on('click', function (e) { if (NioApp.Win.width < _break.lg || $(this).parents().hasClass(_sidebar)) { NioApp.Toggle.dropMenu($(this), attr); } e.preventDefault(); }); }; // Show Menu @v1.0 NioApp.TGL.showmenu = function (elm, opt) { var toggle = elm ? elm : '.nk-nav-toggle', $toggle = $(toggle), $contentD = $('[data-content]'), toggleBreak = $contentD.hasClass(_header_menu) ? _break.lg : _break.xl, toggleOlay = _sidebar + '-overlay', toggleClose = { profile: true, menu: false }, def = { active: 'toggle-active', content: _sidebar + '-active', body: 'nav-shown', overlay: toggleOlay, "break": toggleBreak, close: toggleClose }, attr = opt ? extend(def, opt) : def; $toggle.on('click', function (e) { NioApp.Toggle.trigger($(this).data('target'), attr); e.preventDefault(); }); $doc.on('mouseup', function (e) { if (!$toggle.is(e.target) && $toggle.has(e.target).length === 0 && !$contentD.is(e.target) && $contentD.has(e.target).length === 0 && NioApp.Win.width < toggleBreak) { NioApp.Toggle.removed($toggle.data('target'), attr); } }); $win.on('resize', function () { if (NioApp.Win.width < _break.xl || NioApp.Win.width < toggleBreak) { NioApp.Toggle.removed($toggle.data('target'), attr); } }); }; // Animate FormSearch @v1.0 NioApp.Ani.formSearch = function (elm, opt) { var def = { active: 'active', timeout: 400, target: '[data-search]' }, attr = opt ? extend(def, opt) : def; var $elem = $(elm), $target = $(attr.target); if ($elem.exists()) { $elem.on('click', function (e) { e.preventDefault(); var $self = $(this), the_target = $self.data('target'), $self_st = $('[data-search=' + the_target + ']'), $self_tg = $('[data-target=' + the_target + ']'); if (!$self_st.hasClass(attr.active)) { $self_tg.add($self_st).addClass(attr.active); $self_st.find('input').focus(); } else { $self_tg.add($self_st).removeClass(attr.active); setTimeout(function () { $self_st.find('input').val(''); }, attr.timeout); } }); $doc.on({ keyup: function keyup(e) { if (e.key === "Escape") { $elem.add($target).removeClass(attr.active); } }, mouseup: function mouseup(e) { if (!$target.find('input').val() && !$target.is(e.target) && $target.has(e.target).length === 0 && !$elem.is(e.target) && $elem.has(e.target).length === 0) { $elem.add($target).removeClass(attr.active); } } }); } }; // Animate FormElement @v1.0 NioApp.Ani.formElm = function (elm, opt) { var def = { focus: 'focused' }, attr = opt ? extend(def, opt) : def; if ($(elm).exists()) { $(elm).each(function () { var $self = $(this); if ($self.val()) { $self.parent().addClass(attr.focus); } $self.on({ focus: function focus() { $self.parent().addClass(attr.focus); }, blur: function blur() { if (!$self.val()) { $self.parent().removeClass(attr.focus); } } }); }); } }; // Form Validate @v1.0 NioApp.Validate = function (elm, opt) { if ($(elm).exists()) { $(elm).each(function () { var def = { errorElement: "span" }, attr = opt ? extend(def, opt) : def; $(this).validate(attr); }); } }; NioApp.Validate.init = function () { NioApp.Validate('.form-validate', { errorElement: "span", errorClass: "invalid", errorPlacement: function errorPlacement(error, element) { error.appendTo(element.parent()); } }); }; // Dropzone @v1.1 NioApp.Dropzone = function (elm, opt) { if ($(elm).exists()) { $(elm).each(function () { var maxFiles = $(elm).data('max-files'), maxFiles = maxFiles ? maxFiles : null; var maxFileSize = $(elm).data('max-file-size'), maxFileSize = maxFileSize ? maxFileSize : 256; var acceptedFiles = $(elm).data('accepted-files'), acceptedFiles = acceptedFiles ? acceptedFiles : null; var def = { autoDiscover: false, maxFiles: maxFiles, maxFilesize: maxFileSize, acceptedFiles: acceptedFiles }, attr = opt ? extend(def, opt) : def; $(this).addClass('dropzone').dropzone(attr); }); } }; // Dropzone Init @v1.0 NioApp.Dropzone.init = function () { NioApp.Dropzone('.upload-zone', { url: "/images" }); }; // Wizard @v1.0 NioApp.Wizard = function () { var $wizard = $(".nk-wizard").show(); $wizard.steps({ headerTag: ".nk-wizard-head", bodyTag: ".nk-wizard-content", labels: { finish: "Submit", next: "Next", previous: "Prev", loading: "Loading ..." }, onStepChanging: function onStepChanging(event, currentIndex, newIndex) { // Allways allow previous action even if the current form is not valid! if (currentIndex > newIndex) { return true; } // Needed in some cases if the user went back (clean up) if (currentIndex < newIndex) { // To remove error styles $wizard.find(".body:eq(" + newIndex + ") label.error").remove(); $wizard.find(".body:eq(" + newIndex + ") .error").removeClass("error"); } $wizard.validate().settings.ignore = ":disabled,:hidden"; return $wizard.valid(); }, onFinishing: function onFinishing(event, currentIndex) { $wizard.validate().settings.ignore = ":disabled"; return $wizard.valid(); }, onFinished: function onFinished(event, currentIndex) { window.location.href = "#"; } }).validate({ errorElement: "span", errorClass: "invalid", errorPlacement: function errorPlacement(error, element) { error.appendTo(element.parent()); } }); }; // DataTable @1.1 NioApp.DataTable = function (elm, opt) { if ($(elm).exists()) { $(elm).each(function () { var auto_responsive = $(this).data('auto-responsive'); var dom_normal = '<"row justify-between g-2"<"col-7 col-sm-6 text-left"f><"col-5 col-sm-6 text-right"<"datatable-filter"l>>><"datatable-wrap my-3"t><"row align-items-center"<"col-7 col-sm-12 col-md-9"p><"col-5 col-sm-12 col-md-3 text-left text-md-right"i>>'; var dom_separate = '<"row justify-between g-2"<"col-7 col-sm-6 text-left"f><"col-5 col-sm-6 text-right"<"datatable-filter"l>>><"my-3"t><"row align-items-center"<"col-7 col-sm-12 col-md-9"p><"col-5 col-sm-12 col-md-3 text-left text-md-right"i>>'; var dom = $(this).hasClass('is-separate') ? dom_separate : dom_normal; var def = { responsive: true, autoWidth: false, dom: dom, language: { search: "", searchPlaceholder: "Type in to Search", lengthMenu: "<span class='d-none d-sm-inline-block'>Show</span><div class='form-control-select'> _MENU_ </div>", info: "_START_ -_END_ of _TOTAL_", infoEmpty: "No records found", infoFiltered: "( Total _MAX_ )", paginate: { "first": "First", "last": "Last", "next": "Next", "previous": "Prev" } } }, attr = opt ? extend(def, opt) : def; attr = auto_responsive === false ? extend(attr, { responsive: false }) : attr; $(this).DataTable(attr); }); } }; // DataTable Init @v1.0 NioApp.DataTable.init = function () { NioApp.DataTable('.datatable-init', { responsive: { details: true } }); $.fn.DataTable.ext.pager.numbers_length = 7; }; // BootStrap Extended NioApp.BS.ddfix = function (elm, exc) { var dd = elm ? elm : '.dropdown-menu', ex = exc ? exc : 'a:not(.clickable), button:not(.clickable), a:not(.clickable) *, button:not(.clickable) *'; $(dd).on('click', function (e) { if (!$(e.target).is(ex)) { e.stopPropagation(); return; } }); if (NioApp.State.isRTL) { var $dMenu = $('.dropdown-menu'); $dMenu.each(function () { var $self = $(this); if ($self.hasClass('dropdown-menu-right') && !$self.hasClass('dropdown-menu-center')) { $self.prev('[data-toggle="dropdown"]').dropdown({ popperConfig: { placement: 'bottom-start' } }); } else if (!$self.hasClass('dropdown-menu-right') && !$self.hasClass('dropdown-menu-center')) { $self.prev('[data-toggle="dropdown"]').dropdown({ popperConfig: { placement: 'bottom-end' } }); } }); } }; // BootStrap Specific Tab Open NioApp.BS.tabfix = function (elm) { var tab = elm ? elm : '[data-toggle="modal"]'; $(tab).on('click', function () { var _this = $(this), target = _this.data('target'), target_href = _this.attr('href'), tg_tab = _this.data('tab-target'); var modal = target ? $body.find(target) : $body.find(target_href); if (tg_tab && tg_tab !== '#' && modal) { modal.find('[href="' + tg_tab + '"]').tab('show'); } else if (modal) { var tabdef = modal.find('.nk-nav.nav-tabs'); var link = $(tabdef[0]).find('[data-toggle="tab"]'); $(link[0]).tab('show'); } }); }; // Dark Mode Switch @since v2.0 NioApp.ModeSwitch = function () { var toggle = $('.dark-switch'); if ($body.hasClass('dark-mode')) { toggle.addClass('active'); } else { toggle.removeClass('active'); } toggle.on('click', function (e) { e.preventDefault(); $(this).toggleClass('active'); $body.toggleClass('dark-mode'); }); }; // ***** @v1.0 NioApp.***** = function (elm, opt) { if ($(elm).exists() && typeof $.fn.***** === 'function') { var def = { min: 0 }, attr = opt ? extend(def, opt) : def; $(elm).each(function () { $(this).*****(attr); }); } }; // ***** Init @v1.0 NioApp.*****.init = function () { var ***** = { "default": { readOnly: true, lineCap: "round" }, half: { angleOffset: -90, angleArc: 180, readOnly: true, lineCap: "round" } }; NioApp.*****('.*****', *****["default"]); NioApp.*****('.*****-half', *****.half); }; // Range @v1.0.1 NioApp.Range = function (elm, opt) { if ($(elm).exists() && typeof noUiSlider !== 'undefined') { $(elm).each(function () { var $self = $(this), self_id = $self.attr('id'); var target = document.getElementById(self_id); var def = { start: [25], connect: 'lower', direction: NioApp.State.isRTL ? "rtl" : "ltr", range: { 'min': 0, 'max': 100 } }, attr = opt ? extend(def, opt) : def; noUiSlider.create(target, attr); }); } }; // Range Init @v1.0 NioApp.Range.init = function () { NioApp.Range('.form-range-slider'); }; NioApp.Select2.init = function () { // NioApp.Select2('.select'); NioApp.Select2('.form-select'); }; // Slick Slider @v1.0.1 NioApp.Slick = function (elm, opt) { if ($(elm).exists() && typeof $.fn.slick === 'function') { $(elm).each(function () { var def = { 'prevArrow': '<div class="slick-arrow-prev"><a href="javascript:void(0);" class="slick-prev"><em class="icon ni ni-chevron-left"></em></a></div>', 'nextArrow': '<div class="slick-arrow-next"><a href="javascript:void(0);" class="slick-next"><em class="icon ni ni-chevron-right"></em></a></div>', rtl: NioApp.State.isRTL }, attr = opt ? extend(def, opt) : def; $(this).slick(attr); }); } }; // Slick Init @v1.0 NioApp.Slider.init = function () { NioApp.Slick('.slider-init'); }; // Number Spinner NioApp.NumberSpinner = function (elm, opt) { var plus = document.querySelectorAll("[data-number='plus']"); var minus = document.querySelectorAll("[data-number='minus']"); plus.forEach(function (item, index, arr) { var parent = plus[index].parentNode; plus[index].addEventListener("click", function () { var child = plus[index].parentNode.children; child.forEach(function (item, index, arr) { if (child[index].classList.contains("number-spinner")) { var value = !child[index].value == "" ? parseInt(child[index].value) : 0; var step = !child[index].step == "" ? parseInt(child[index].step) : 1; var max = !child[index].max == "" ? parseInt(child[index].max) : Infinity; if (max + 1 > value + step) { child[index].value = value + step; } else { child[index].value = value; } } }); }); }); minus.forEach(function (item, index, arr) { var parent = minus[index].parentNode; minus[index].addEventListener("click", function () { var child = minus[index].parentNode.children; child.forEach(function (item, index, arr) { if (child[index].classList.contains("number-spinner")) { var value = !child[index].value == "" ? parseInt(child[index].value) : 0; var step = !child[index].step == "" ? parseInt(child[index].step) : 1; var min = !child[index].min == "" ? parseInt(child[index].min) : 0; if (min - 1 < value - step) { child[index].value = value - step; } else { child[index].value = value; } } }); }); }); }; // Extra @v1.1 NioApp.OtherInit = function () { NioApp.ClassBody(); NioApp.PassSwitch(); NioApp.CurrentLink(); NioApp.LinkOff('.is-disable'); NioApp.ClassNavMenu(); NioApp.SetHW('[data-height]', 'height'); NioApp.SetHW('[data-width]', 'width'); NioApp.NumberSpinner(); }; // Animate Init @v1.0 NioApp.Ani.init = function () { NioApp.Ani.formElm('.form-control-outlined'); NioApp.Ani.formSearch('.toggle-search'); }; // BootstrapExtend Init @v1.0 NioApp.BS.init = function () { NioApp.BS.menutip('a.nk-menu-link'); NioApp.BS.tooltip('.nk-tooltip'); NioApp.BS.tooltip('.btn-tooltip', { placement: 'top' }); NioApp.BS.tooltip('[data-toggle="tooltip"]'); NioApp.BS.tooltip('.tipinfo,.nk-menu-tooltip', { placement: 'right' }); NioApp.BS.popover('[data-toggle="popover"]'); NioApp.BS.progress('[data-progress]'); NioApp.BS.fileinput('.custom-file-input'); NioApp.BS.modalfix(); NioApp.BS.ddfix(); NioApp.BS.tabfix(); }; // Picker Init @v1.0 NioApp.Picker.init = function () { NioApp.Picker.date('.date-picker'); NioApp.Picker.dob('.date-picker-alt'); NioApp.Picker.time('.time-picker'); NioApp.Picker.date('.date-picker-range', { todayHighlight: false, autoclose: false }); }; // Addons @v1 NioApp.Addons.Init = function () { NioApp.*****.init(); NioApp.Range.init(); NioApp.Select2.init(); NioApp.Dropzone.init(); NioApp.Slider.init(); NioApp.DataTable.init(); }; // Toggler @v1 NioApp.TGL.init = function () { NioApp.TGL.content('.toggle'); NioApp.TGL.expand('.toggle-expand'); NioApp.TGL.expand('.toggle-opt', { toggle: false }); NioApp.TGL.showmenu('.nk-nav-toggle'); NioApp.TGL.ddmenu('.' + _menu + '-toggle', { self: _menu + '-toggle', child: _menu + '-sub' }); }; NioApp.BS.modalOnInit = function () { $('.modal').on('shown.bs.modal', function () { NioApp.Select2.init(); NioApp.Validate.init(); }); }; // Initial by default ///////////////////////////// NioApp.init = function () { NioApp.coms.docReady.push(NioApp.OtherInit); NioApp.coms.docReady.push(NioApp.Prettify); NioApp.coms.docReady.push(NioApp.ColorBG); NioApp.coms.docReady.push(NioApp.ColorTXT); NioApp.coms.docReady.push(NioApp.Copied); NioApp.coms.docReady.push(NioApp.Ani.init); NioApp.coms.docReady.push(NioApp.TGL.init); NioApp.coms.docReady.push(NioApp.BS.init); NioApp.coms.docReady.push(NioApp.Validate.init); NioApp.coms.docReady.push(NioApp.Picker.init); NioApp.coms.docReady.push(NioApp.Addons.Init); NioApp.coms.docReady.push(NioApp.Wizard); NioApp.coms.winLoad.push(NioApp.ModeSwitch); }; NioApp.init(); return NioApp; }(NioApp, jQuery);
Write, Run & Share Javascript code online using OneCompiler's JS online compiler for free. It's one of the robust, feature-rich online compilers for Javascript language. Getting started with the OneCompiler's Javascript editor is easy and fast. The editor shows sample boilerplate code when you choose language as Javascript and start coding.
Javascript(JS) is a object-oriented programming language which adhere to ECMA Script Standards. Javascript is required to design the behaviour of the web pages.
var readline = require('readline');
var rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
terminal: false
});
rl.on('line', function(line){
console.log("Hello, " + line);
});
Keyword | Description | Scope |
---|---|---|
var | Var is used to declare variables(old way of declaring variables) | Function or global scope |
let | let is also used to declare variables(new way) | Global or block Scope |
const | const is used to declare const values. Once the value is assigned, it can not be modified | Global or block Scope |
let greetings = `Hello ${name}`
const msg = `
hello
world!
`
An array is a collection of items or values.
let arrayName = [value1, value2,..etc];
// or
let arrayName = new Array("value1","value2",..etc);
let mobiles = ["iPhone", "Samsung", "Pixel"];
// accessing an array
console.log(mobiles[0]);
// changing an array element
mobiles[3] = "Nokia";
Arrow Functions helps developers to write code in concise way, it’s introduced in ES6.
Arrow functions can be written in multiple ways. Below are couple of ways to use arrow function but it can be written in many other ways as well.
() => expression
const numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
const squaresOfEvenNumbers = numbers.filter(ele => ele % 2 == 0)
.map(ele => ele ** 2);
console.log(squaresOfEvenNumbers);
let [firstName, lastName] = ['Foo', 'Bar']
let {firstName, lastName} = {
firstName: 'Foo',
lastName: 'Bar'
}
const {
title,
firstName,
lastName,
...rest
} = record;
//Object spread
const post = {
...options,
type: "new"
}
//array spread
const users = [
...adminUsers,
...normalUsers
]
function greetings({ name = 'Foo' } = {}) { //Defaulting name to Foo
console.log(`Hello ${name}!`);
}
greet() // Hello Foo
greet({ name: 'Bar' }) // Hi Bar
IF is used to execute a block of code based on a condition.
if(condition){
// code
}
Else part is used to execute the block of code when the condition fails.
if(condition){
// code
} else {
// code
}
Switch is used to replace nested If-Else statements.
switch(condition){
case 'value1' :
//code
[break;]
case 'value2' :
//code
[break;]
.......
default :
//code
[break;]
}
For loop is used to iterate a set of statements based on a condition.
for(Initialization; Condition; Increment/decrement){
//code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while (condition) {
// code
}
Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
// code
} while (condition);
ES6 introduced classes along with OOPS concepts in JS. Class is similar to a function which you can think like kind of template which will get called when ever you initialize class.
class className {
constructor() { ... } //Mandatory Class method
method1() { ... }
method2() { ... }
...
}
class Mobile {
constructor(model) {
this.name = model;
}
}
mbl = new Mobile("iPhone");