Tutorial by Examples: i

The q element can be used for a quote that is part of a sentence: <p>She wrote <q>The answer is 42.</q> and everyone agreed.</p> Quotation marks 4.01 Quotation marks should not be added. User agents should (in HTML 4.01) resp. must (in HTML 4.0) render them automaticall...

The blockquote element can be used for a (block-level) quote: <blockquote> <p>The answer is 42.</p> </blockquote> Source URL (cite attribute) The cite attribute can be used to reference the URL of the quoted source: <blockquote cite="http://example.com/blog/...

Observe the notifications UIKeyboardWillShowNotification and UIKeyboardWillHideNotification, update the scrollView content insets according to keyboard height, then scroll to the focused control. - (void)viewDidLoad { [super viewDidLoad]; // register for keyboard notifications [[...

View file: <?php use yii; use yii\bootstrap\ActiveForm; use yii\helpers\Html; ?> <?php $form = ActiveForm::begin([ 'action' => ['comments/ajax-comment'], 'options' => [ 'class' => 'comment-form' ] ]); ?> <?= $form->field($model, '...

To set a cookie i.e. to create it and schedule for sending to the browser you need to create new \yii\web\Cookie class instance and add it to response cookies collection: $cookie = new Cookie([ 'name' => 'cookie_monster', 'value' => 'Me want cookie!', 'expire' => time() + 86...

In order to read a cookie use the following code: $value = \Yii::$app->getRequest()->getCookies()->getValue('my_cookie'); Note: this code allows read cookies that has been set using cookie component (because it signs all cookies by default). Therefore if you add/update cookie using JS c...

Because of security reasons, by default cookies are accessible only on the same domain from which they were set. For example, if you have set a cookie on domain example.com, you cannot get it on domain www.example.com. So if you're planning to use subdomains (i.e. admin.example.com, profile.exampl...

In case of autologin or "remember me" cookie, the same quirks as in case of subdomain cookies are applying. But this time you need to configure user component, setting identityCookie array to desired cookie config. Open you application config file and add identityCookie parameters to use...

Session cookies parameters are important both if you have a need to maintain session while getting from one subdomain to another or when, in contrary, you host backend app under /admin URL and want handle session separately. $config = [ // ... 'components' => [ // ... ...

Pure JavaScript It's possible to add, remove or change CSS property values with JavaScript through an element's style property. var el = document.getElementById("element"); el.style.opacity = 0.5; el.style.fontFamily = 'sans-serif'; Note that style properties are named in lower came...

import { Component } from '@angular/core'; import { Observable } from 'rxjs/Observable'; import 'rxjs/add/observable/of'; @Component({ selector: 'async-stuff', template: ` <h1>Hello, {{ name | async }}</h1> Your Friends are: <ul> <li *ngFor=&quot...

Detailed instructions on getting oauth set up or installed.

The default box model (content-box) can be counter-intuitive, since the width / height for an element will not represent its actual width or height on screen as soon as you start adding padding and border styles to the element. The following example demonstrates this potential issue with content-...

A less known builtin feature is Controller Action injection using the FromServicesAttribute. [HttpGet] public async Task<IActionResult> GetAllAsync([FromServices]IProductService products) { return Ok(await products.GetAllAsync()); } An important note is that the [FromServices] c...

Given a Person struct struct Person { let name: String let birthYear: Int? } and an Array of Person(s) let persons = [ Person(name: "Walter White", birthYear: 1959), Person(name: "Jesse Pinkman", birthYear: 1984), Person(name: "Skyler White&quo...

This is a normal function call: console.log("Hello World!"); When you call a normal function, it does its job and then returns control back to the caller. However, sometimes a function needs to return control back to the caller in order to do its job: [1,2,3].map(function double(x) {...

This directive is useful to limit input events based on certain existing conditions. The ng-disabled directive accepts and expression that should evaluate to either a truthy or a falsy values. ng-disabled is used to conditionally apply the disabled attribute on an input element. HTML <input t...

The ng-dblclick directive is useful when you want to bind a double-click event into your DOM elements. This directive accepts an expression HTML <input type="number" ng-model="num = num + 1" ng-init="num=0"> <button ng-dblclick="num++">Double...

Custom Renderers let developers customize the appearance and behavior of Xamarin.Forms controls on each platform. Developers could use features of native controls. For example, we need to disable scroll in ListView. On iOS ListView is scrollable even if all items are placed on the screen and user s...

Cheatsheet DODON'TControl flow with control statementsControl flow with exceptionsKeep track of ignored (absorbed) exception by loggingIgnore exceptionRepeat exception by using throwRe-throw exception - throw new ArgumentNullException() or throw exThrow predefined system exceptionsThrow custom exce...