如何将可选参数传递给反应中的 function 和 javascript？

Question

i want to set an optional parameter to a function using javascript. i have a function defined like below,

const function1 = () => {
    setValue(!open);
};

i call it like below in other function

const main_function = () => {
    function1();
}

now i want to pass an optional parameter to function1 to accept an optional parameter that sets it to true or false instead of toggling based on previous value.

how can i fix this. could someone help me with this thanks.

Answer 1

I hope this helps someone, you can just set the value to null like code below:

 const function1 = ({arg1=null, arg2= false, arg3, ...}) => {
  
 }

Answer 2

You can check the if the argument is defined or not, like:

const function1 = (arg) => {
  setValue(arg === undefined ? !open : arg);
};

Answer 3

As far as I can understand you want something like this.

const function1 = (param) => {
    setValue(params ? true : false);
}

It will set true if param is available otherwise false. Correct me if I'm wrong.