Dealing with duplicate declaration warning for loop variables

Question

Consider the following code:

for (var i=0; i<100; i++) {
    // your code here
}
// some other code here
for (var i=0; i<500; i++) {
    // custom code her         


        

Answer 1

best practice here should be good programming style:

A program should be constructed in short functions, which will do one little task. Usually, if you're looping, you do something such special which should stand in an own function. In the end every function has his own scope, so that the duplicate-declaration-problem is away.

function myApp() {
    magicLoopAction();
    someOtherMagicStuff();
}
function magicLoopAction() {
    for (var i = 0; i < 42; i++) { 
        // whoopwhoop
    }
}
function someOtherMagicStuff() {
    for (var i = 0; i < 69; i++) { 
        // lint is happy and proud on you
    }
}