How to write javascript in vs2015

Writing JavaScript in Visual Studio 2015

With the development of Web technology, JavaScript has become an indispensable part of Web development. Since Visual Studio 2015 is a very powerful development tool from Microsoft, using Visual Studio 2015 to write JavaScript code has become a good choice. This article will introduce you to the relevant knowledge and skills of writing JavaScript in Visual Studio 2015.

Install Node.js and NPM

First, we need to install Node.js and NPM (the package manager for Node.js) in order to use some tools and tools for JavaScript in Visual Studio 2015 library. You can go to the Node.js official website (https://nodejs.org) to download the latest Node.js installation package, and NPM will be installed by default. After the installation is complete, you can enter "node -v" and "npm -v" on the command line to check whether the installation is successful.

Create a Web Project

In Visual Studio 2015, we need to create a Web project to start writing JavaScript code. You can choose to create a new "ASP.NET Web Application" or directly create a "HTML Application". Here we choose the latter.

In the "New Project" window of Visual Studio, select "Other Types" -> "Blank Application" and name it "JavaScript Project". Click OK to create a new JavaScript project.

Create js file

In Visual Studio 2015, we can right-click the "JavaScript Project" in the solution and select "Add"->"New Item" Create a new js file. You can also create a new js file directly in the solution manager and copy it to the JavaScript project.

Writing JavaScript code in a js file

Before you start writing JavaScript code, you need to add a "'use strict';" statement at the beginning of the js file to enable JavaScript's strict mode. This can avoid some common problems, such as wrong variable names. Then you can start writing your JavaScript code.

In Visual Studio 2015, you can use the IntelliSense function to automatically complete code based on entered keywords. You can also use IntelliSense to see the parameters and return types of specific JavaScript functions.

Debugging JavaScript code

Debugging JavaScript code is very important. In Visual Studio 2015, you can use the built-in debugger to debug your JavaScript code. In the Visual Studio toolbar, select "Debug" -> "Attach to Process" to open the Attach to Process window. Select the correct browser process and click the Attach button to launch the debugger.

At this point, you can use F5 to start debugging your JavaScript code. The debugger will set breakpoints in the code so that you can step through the code and see the values ​​of variables and the flow of execution.

Using JavaScript libraries

Visual Studio 2015 supports the use of JavaScript libraries in JavaScript projects, such as jQuery, Bootstrap, etc. You can open the NuGet Package Manager by right-clicking on "JavaScript Project" in the solution and selecting "Manage NuGet Packages". Here you can search and install the JavaScript libraries you need.

Summary

Writing JavaScript in Visual Studio 2015 is a very convenient thing. You can use the built-in IntelliSense and debugger to write and debug JavaScript code, or use the NuGet package manager to add and manage JavaScript libraries. Read this article carefully and you will become a better JavaScript developer.

The above is the detailed content of How to write javascript in vs2015. For more information, please follow other related articles on the PHP Chinese website!