How To Set A Selected Value In A Dropdown List Using Mustache Js

Dropdown lists are a common element in web forms that allow users to select an option from a list of choices. Sometimes, you may want to pre-select a value in a dropdown list, and that's where Mustache JS comes in handy. In this guide, we'll walk through the steps on how to set a selected value in a dropdown list using Mustache JS.

Before we dive into the technical details, it's important to understand the basics of Mustache JS. Mustache is a logic-less template syntax that allows you to write templates that can be rendered with data. It provides a simple way to insert values into your HTML templates without mixing code logic.

To set a selected value in a dropdown list using Mustache JS, you'll first need to include the Mustache JS library in your project. You can do this by either downloading the library and including it in your project directory or by using a CDN link to include it directly in your HTML file.

Next, you'll need to create your dropdown list in your HTML file. Make sure to give your select element an id or class for easy targeting with JavaScript. Here's an example of a simple dropdown list:

Option 1
   Option 2
   Option 3

Now, let's move on to setting the selected value using Mustache JS. First, you'll need to define the data that will be used to render your template. In this case, the selected value that you want to set in the dropdown list. Here's an example of how you can define your data object:

const data = { selectedValue: "2" };

Now, you can use Mustache JS to render your template and set the selected value in the dropdown list. Here's an example of how you can achieve this:

const template = document.getElementById("myDropdown");
const rendered = Mustache.render(template.innerHTML, data);
template.innerHTML = rendered;

In the code snippet above, we are fetching the template element by its ID, rendering the template with the data object containing the selected value, and then updating the HTML content of the template element with the rendered output.

By following these steps, you can easily set a selected value in a dropdown list using Mustache JS. This approach allows you to dynamically update your dropdown lists based on data and provides a clean and efficient way to manage your frontend templates. Remember to customize the example code snippets to match your specific project requirements and data structures. Happy coding!