This will illustrate how variables can be used as attributes. Below is another example where the variable is creating an array of classes which should be applied to an element. Variables created this way can be of any data type that can be used in JavaScript. Though the example below isn’t practical, it helps to show how variables can be set and used in their simplest form. If you then just want to put that variable into the DOM as-is, an equals sign can accomplish that. Unlike php, where the code to be executed needs to be wrapped in a tag, all that’s needed to set up a variable in Pug is a hyphen. pug file is very easy to do since it is a JavaScript templating language. Without further adieu, let’s get started! Creating and using variables within Pug
Today I’m going to show you how you can use variables and logic in your templates to make them dynamic and flexible, allowing you to write one template to hold lots of different pieces of information that are all formatted the same rather than writing out a separate HTML file for each one. In my previous post, I showed you how to create elements in Pug with classes, ids, attributes, and nesting. Here is what our index.Using the Pug Templating Engine Part 2 – Logic Return response.render( " index ", syntax. Instead of overriding that default, we will also create a folder called views.Ĭonst colors = Īpp.set( " view engine ", " pug ") // notice here we are telling express to render views using the pug templating engine. By default, express expects a folder containing templates to be called views.
There are quite a few we can use with Node.js including ejs, but we will be using one called pug (formerly known as jade).īefore we introduce the pug syntax, let's first start a new project and see what we need to include. In order to do that, we need to make use of a templating engine (a tool for dynamically rendering HTML using server data). If we want to simply send HTML back we can use ndFile, but since we are using server-side templates, we will be using a method called render. So far we have only seen how to respond by sending text, but when building server-side applications, we usually want to send back HTML or JSON / XML (if we're building an RESTful API). By the end of this chapter, you should be able to:
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