While and do-while loops work like they do in other languages:
while(condition) {
doSomething()
}
do {
doSomething()
} while (condition)
In the do-while loop, the condition block has access to values and variables declared in the loop body.
Polymer prodives a lot of well built elements for you to use in your app.
Browse them in their Element Catalog.
Let's go through the workflow of using an element by including paper-input (Documentation)
Download the Element
To Download an element there are two ways:
Bower
The convinient way is...
We got the following very basic element my-element saved as src/my-element.html
<link rel="import" href="bower_components/polymer/polymer.html">
<dom-module id="my-element">
<template>
<style>
/* local styles go here */
...
The following example is an introduction to:
Template compilation using underscore
Accessing variables in a template
Creating a view
Rendering a view
Showing a view
<html>
<head>
<script src="https://code.jquery.com/jquery-3.1.0.min.js"></script>
...
Occasionally, we may want to display dialogs with more than one pane of content. jQuery UI offers tabs that can be used in tandem with a dialog to make this possible. While it may be more common to have tabs within a dialog's content container, this example will demonstrate how to make a list of t...
Higher-order functions can be used to implement generic algorithms, giving up the responsibility of providing final details to the user. For instance List.sort expects a comparison function, which allows to implement various ways of sorting. Here we implement case-insensitive sorting of strings:
le...
List.map has the signature ('a -> 'b) -> 'a list -> 'b list which in English is a function that takes a function (we'll call this the mapping function) from one type (namely 'a) to another type (namely 'b) and a list of the first type. The function returns a list of the second type where ev...
The ls command has several options that can be used together to show more information.
Details/Rights
The l option shows the file permissions, size, and last modified date. So if the root directory contained a dir called test and a file someFile the command:
user@linux-computer:~$ ls -l
Would ...
Most modern distributions will come with BASH (Bourne Again SHell) pre-installed and configured as a default shell.
The command (actually an executable binary, an ELF) that is responsible for changing shells in Linux is chsh (change shell).
We can first check which shells are already installed and...
Observables are broadly categorised as Hot or Cold, depending on their emission behaviour. A Cold Observable is one which starts emitting upon request(subscription), whereas a Hot Observable is one that emits regardless of subscriptions.
Cold Observable
/* Demonstration of a Cold Observable */
Ob...
A deadlock occurs when two competing actions wait for the other to finish, and thus neither ever does.
In java there is one lock associated with each object.
To avoid concurrent modification done by multiple threads on single object we can use synchronized
keyword, but everything comes at a cost....
Although modules are ideal, if the library you are using is referenced by a global variable (like $ or _), because it was loaded by a script tag, you can create an ambient declaration in order to refer to it:
declare const _: any;
A message with important, and usually time-sensitive, information.
<div role="alert" aria-live="assertive">Your session will expire in 60 seconds.</div>
Note that I've included both role="alert" and aria-live="assertive" at the same time. The...
A type of dialog that contains an alert message, where initial focus goes to an element within the dialog.
<div role="alertdialog">
<h1>Warning</h1>
<div role="alert">Your session will expire in 60 seconds.</div>
</div>
A region declared as a web application, as opposed to a web document. In this example, the application is a simple calculator that might add two numbers together.
<div role="application">
<h1>Calculator</h1>
<input id="num1" type="text"> +...
A section of a page that consists of a composition that forms an independent part of a document, page, or site.
Setting an ARIA role and/or aria-* attribute that matches the default implicit ARIA semantics is unnecessary and is not recommended as these properties are already set by the browser....
A region that contains mostly site-oriented content, rather than page-specific content.
<div role="banner">
<h1>My Site</h1>
<ul>
<li><a href="/">Home</a></li>
<li><a href="/about">About</...
A checkable input that has three possible values: true, false, or mixed.
<p>
<input type="checkbox" role="checkbox" aria-checked="false">
I agree to the terms
</p>
