How can I use fetch in while loop

Question

My code is something like this:

var trueOrFalse = true;
while(trueOrFalse){
    fetch(\'some/address\').then(){
        if(someCondition){
            trueOrFals         


        

Answer 1

while loop is sync where fetch is async in nature, so while won't wait for fetch async operation to complete and going to next iteration immediately.

You can achieve this synchronously like following:

function syncWhile(trueOrFalse){
    if(trueOrFalse) {
    fetch('some/address').then(){
        if(someCondition){
            trueOrFalse = false;
        }
        syncWhile(trueOrFalse);
    }
  }
}
syncWhile(true);