我如何在三元运算符中转换此代码

Question

i have this code where i am using recursion to console some numbers, without using for loop.

let counter = 0;
function test() {
    if(counter <= 50) {
        c.log(counter);
        ++counter;
        test();
    } else {
       return;
    }
}

test(80);

is there any way to solve this in one line with ternary operator without using external function like this:

let counter = 0;

function doSomething() {
    c.log(counter);
    ++counter;
    test();
}

function test() {
    counter <= 50 ? doSomething() : null;
}

test(80);

Answer 1

Although I wouldn't recommend it, this would work iff function proba() accepts an additional argument. console.log(var) returns the value of var , in case your c is just a shorthand for console .

But really, I don't see any recursion in your code. The undefined proba() and test() function seem independent of each other.

let counter = 0;

function test(n) {
    counter <= 50 ? proba(c.log(counter++)) : null;
}

test(80);

Answer 2

This is an approach without using a global variable.

 function test(n) { if (n < 0) return; // exit condition test(n - 1); // recursive call console.log(n); // deferred output } test(50);

Answer 3

function test() {
    counter <= 50 ? (c.log(counter), ++counter, test()) : null;
}

test(80);