Programmer Group

3.1 Overview of TypeScript 3.1.1 overview 3.1.2 installation Check whether npm is installed Next, we use the 2.0 official version of TypeScript. The installation commands are as follows: npm install -g typescript@2.0.0 Write the first Typescript program and save it to hello.ts. The code in the file is as follows: console.log('hel ...

It is known that the three vertex coordinates of a triangle are used to find the circumscribed circle and the circumscribed circle of the triangle. A triangle has a center of gravity, a center of gravity, a center of gravity, a center of gravity, a center of gravity, a center of gravity, and a center of gravity. The outer center, the center ...

Characteristics of Single Page Application advantage Inferiority Programming development environment New project Main concepts Component componentts componenthtml Association and Binding Data and Behavior of Compoonentts and Compoonenthtml Route Routing declaration Routing instance service Examples encapsulate routing jumps as ...

angular for beginners. Please point out the mistakes. Thank you. 1.angular routing, modularization, replacement of html content to replace the display of the page. 2. After routing is established, ui-router is used to change content in two (or more) different places of the page at the same time. 3. If it is not a small project, all t ...

Simple requirement: The drop-down box used to be radio, but now it wants to be multiple. Development process: Question 1: The first thing I want to think about is to find an example on the Internet and find that angular JS seems to have corresponding JS packages to implement, the most of which are isteven-multi-select and angular js-dropdown- ...

From: http://www.cnblogs.com/whitewolf/p/zone-js.html During the development of ng2, the Angular team brought us a new library, zone. js. zone.js was inspired by Dart language, which describes the context of JavaScript execution and allows persistent transfer between asynchronous tasks, similar to TLS in Java.( thread-local storage: T ...

Based on the HTML 5 version of XXX, this paper discusses the idea and practice of state machine development. Selection and Use of State Machine statechart.js. Starting knowledge For an introduction to state machines, please refer to Statecharts and Angular.js The basic usage of statechart.js, please refer to statechart.js Especially t ...

Before that, I need to know a few things first. $q Introduction: $q: The main problem is asynchronous programming, which describes the interaction between the results of an action executed asynchronously on behalf of an object through a commitment behavior, and may or may not be completed at any time. We understand the $q service through a ...

form Control is mainly used to receive user input, such as input, select, textarea. Form is a collection of related controls. Form and control provide validation services and can be notified of invalid input before the user submits the form to the back end. A simple form form validation is much better than server-side validation because f ...

Introduction Angular JS controls page elements 1 ng-if instruction control page 11 Code Instances 2 ng-repeat instruction control page 21 Code Implementation 3 ng-switch instruction control page 31 Code Implementation 4 ng-show instruction control page 41 Code Implementation 5 ng-include instruction control page 51 ng-include ...