Macro insert_html

macro_rules! insert_html {
    ({$contents:expr}, $($x:tt)*) => { ... };
}

Takes a String and swaps the placeholder text {COMPONENT} for the HTML String built using the provided syntax

First specify the String containing the placeholder text {COMPONENT}. This string should be inserted in curly brackets {} and have a comma inserted after the brackets. Second specify the syntax describing the element to be inserted. See documentation on html! for more details on the syntax to use.

let test_contents = String::from("<div>{COMPONENT}</div>");

let result = insert_html!({test_contents}, span () "Hello World");

assert_eq!(result, "<div><span>Hello World</span></div>");