higher order single click function

higher_order_single_click.js

//Wrap an onclick handler
const once = fn => {
    let done = false;
    return (...args) => {
        if (!done) {
            done = true;
            fn(...args);
        }
    }
}

//usage:
let onSubmitPayment = (items, prices) {
  // ...
}
<button onClick={once(onSubmitPayment)(items, prices)}></button>

// test:
const squeak = a => console.log(a, " squeak!!");
squeak("original"); // "original squeak!!"
squeak("original"); // "original squeak!!"
squeak("original"); // "original squeak!!"

const squeakOnce = once(squeak);
squeakOnce("only once"); // "only once squeak!!"
squeakOnce("only once"); // no output
squeakOnce("only once"); // no output

const thisManyTimes = (fn, n) => {
    let runsLeft = n
    return (...args) => {
        if (n > 0) {
            n--;
            fn(...args);
        }
    }
}


thisManyTimes(fn,1)

const alternator = (fn1, fn2) => {
    let first = fn1
    let second = fn2
    let flag = 0
    
    return  (...args) => {
        if (flag) {
            flag = 0
            first(...args)
        } else {
            flag = 1
            second(...args)
        }
    }
}
let sayA = () => console.log("A");
let sayB = () => console.log("B");

let alt = alternator(sayA, sayB);