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JavaScript

Changing the argument to a function??? Please help..

Hi guys and gals, need your help to teach me why Guil did this:

Why does Guil use () when passing the argument in const color? Shouldn't it just be passed ${value} ?

let html = '';
const main = document.querySelector('main');
const randomValue = () => Math.floor(Math.random() * 256);

function randomRGB(value) { 
    const color = `rgb( ${value()}, ${value()}, ${value()} )`;
    return color;
}

for (let i = 0; i <= 10; i++) {
    html += `<div style="background-color: ${randomRGB(randomValue)}">${i}</div>`;
  }

main.innerHTML = html;

doesn't it mean that he's making the argument turn into a function? I'm confused.

thank you!