Execute JS code blocks

[XinranSix]

Problem

when where's a js block like js:

console.log("Hello World!")

I like it to execute directly, just like the Rust code below:

fn main () {
    println!("Hello World!");
}

Proposed Solution

No response

Notes

No response

[ehuss]

Thanks for the report! I believe this is a duplicate of #1453 and #350, so closing in favor of those.