Pluto notebooks defining javascript function in script for call by onclick

When working with Pluto notebooks in Julia, you may come across a situation where you need to define a JavaScript function in a script for call by onclick. In this article, we will explore three different ways to solve this problem.

Option 1: Using HTMLString

One way to define a JavaScript function in a script for call by onclick is by using the HTMLString function in Julia. This function allows you to embed HTML code within your Julia code. Here’s an example:

using PlutoUI

function my_function()
    js_code = """
    function myFunction() {
        // Your JavaScript code here
    }
    """
    display(HTMLString(js_code))
end

my_function()

In this example, we define a Julia function called my_function that displays the JavaScript code using the display function from the PlutoUI package. The JavaScript code is defined as a string and embedded within the HTMLString function.

Option 2: Using HTML and JavaScript tags

Another way to define a JavaScript function in a script for call by onclick is by using the HTML and JavaScript tags directly in your Pluto notebook. Here’s an example:

using PlutoUI

function my_function()
    js_code = """
    
    """
    display(HTML(js_code))
end

my_function()

In this example, we define a Julia function called my_function that displays the JavaScript code using the display function from the PlutoUI package. The JavaScript code is defined within the <script> tags.

Option 3: Using the JavaScript package

Lastly, you can use the JavaScript package in Julia to define a JavaScript function in a script for call by onclick. Here’s an example:

using JavaScript

function my_function()
    js_code = """
    function myFunction() {
        // Your JavaScript code here
    }
    """
    js_code = JavaScript(js_code)
    display(js_code)
end

my_function()

In this example, we define a Julia function called my_function that displays the JavaScript code using the display function. The JavaScript code is wrapped in the JavaScript constructor from the JavaScript package.

After exploring these three options, it is clear that the best option depends on your specific use case. If you need more flexibility and control over the HTML code, using the HTMLString function (Option 1) might be the best choice. However, if you prefer a more concise and straightforward approach, using the HTML and JavaScript tags (Option 2) or the JavaScript package (Option 3) can be suitable alternatives.

Ultimately, the choice between these options will depend on your personal preference and the requirements of your project.