Reasons why IIS does not support JavaScript and its solutions

IIS is one of the most widely used web server software in Windows servers. Through IIS, you can easily set up a web server and host web applications. However, there are some issues that need to be noted when using IIS. One of the issues is that IIS does not support JavaScript. In this article, we will explore why IIS does not support JavaScript and how to fix this problem.

Why doesn’t IIS support JavaScript?

IIS is a web server software developed by Microsoft. It supports many web technologies, such as ASP.NET, PHP, CGI and FastCGI, etc. However, IIS does not natively support JavaScript, mainly because it is a client-side scripting language that runs on the web browser, not the web server.

Normally, when a user requests access to a Web page in a Web browser, the Web server will first read the HTML and CSS code of the page and then send it to the browser. After the browser receives the code, it will parse the HTML and CSS and perform relevant operations based on the JavaScript code in it. This is basically how web pages work.

However, since IIS is software running on the server, it does not execute the JavaScript code on the browser. Therefore, if you place JavaScript code in a web page and host the page on IIS, the browser will still be able to parse and execute the JavaScript code, but IIS will not execute it and will only transmit the page's HTML and CSS to the browser. The execution and operation of JavaScript must be completed by the web browser.

Solution

Although IIS itself does not support JavaScript, we can use its extension to solve this problem. Below, we'll cover some of the ways you can use JavaScript on IIS.

1. Using the ASP.NET AJAX extension

ASP.NET AJAX is an ASP.NET extension developed by Microsoft that can be used to run JavaScript in a web browser code. By using ASP.NET AJAX, we can embed JavaScript code into a server-side .NET application and transmit it to the web browser through IIS. In this way, the web browser can parse and execute the JavaScript code.

2. Using Node.js

Node.js is a popular JavaScript runtime environment that can be used for the development of server-side applications. By using Node.js, we can run JavaScript code on the server and integrate it with IIS. In this way, we can use JavaScript in IIS.

3. Use a third-party JavaScript engine

Another way is to use a third-party JavaScript engine, such as Google V8 or Mozilla Rhino. These engines can be integrated into IIS and used to run JavaScript code on the web server. However, using this method requires certain technical and professional knowledge.

Summary

In this article, we explored why IIS does not support JavaScript and how to solve this problem. Although IIS itself does not support JavaScript, we can use ASP.NET AJAX, Node.js or a third-party JavaScript engine to implement it. Choosing the right method allows us to easily use JavaScript in IIS to develop more powerful and flexible web applications.

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