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JavaScript

Posted by Kevin Narain
Kevin Narain
11,379 Points

Is there a way to access the variables from other for loops inside another for loop?

In my, if-statement I want to compare the variables i and j but it doesn't work. Is there a way to access those variables?

    for (let i = 0; i < 1000; i += 100) {
        console.log(`${i}`);
    }

    for (let j = 0; j < 100; j += 10) {
        console.log(`${j}`);
    }

    for (let k = 0; k < 10; k++) {
        console.log(`${k}`);
        if (i == 300 && j == 60 && k == 4) {
            console.log('You found the number 364!');
        }
    }

1 Answer

Simon Coates
Simon Coates
8,223 Points
Simon Coates
Simon Coates
8,223 Points

It might work with something like

let i,j;
for (i = 0; i < 300; i += 100) {
        console.log(`${i}`);
    }

    for (j = 0; j < 60; j += 10) {
        console.log(`${j}`);
    }

    for (let k = 0; k < 10; k++) {
        console.log(`${k}`);
      if (i == 300 && j == 60 && k == 4) {
            console.log('You found the number 364!');
        }
    }

or

for (var i = 0; i < 300; i += 100) {
        console.log(`${i}`);
    }

    for (var j = 0; j < 60; j += 10) {
        console.log(`${j}`);
    }

    for (let k = 0; k < 10; k++) {
        console.log(`${k}`);
        if (i == 300 && j == 60 && k == 4) {
            console.log('You found the number 364!');
        }
    }

Let and const variable declaration are different to the old style (var uses something called hoisting). So with the above, the variables are still in scope.