JavaScript有function个参数类型吗？

Question

In PHP you can set function parameters (Or as there called in PHP arguements) to only accept a certain type(s) and a default value. Is this possible in JavaScript?

function test(bool $a = false) {
    
}

In the Atom code editor, when I type for example 'text'.substring() and I hover over the code, a tooltip window says this...

(Method) String.substring(start: number, end?: number)

The reason I want to be able to set the parameter types is to have this tooltip be accurate on my custom functions.

Answer 1

Javascript variables don't have any types, but you can make a custom tooltip, possibly based off of comments inserted into the parameters of the functions, usin the Tooltip manager https://goodfoodgoodcode.com/2016/10/01/custom-tooltips-in-the-atom-text-editor/