I have an array of URLs, which I have to download using JS / Cordova async functions. My current implementation looks like this (simplified):
var urls = [ ...... many many ...... ]
var arrayPointer = 0;
downloadData();
function downloadData() {
if(arrayPointer >= urls.length) {
do_something_else();
return false
}
downloadURL(urls[arrayPointer++],successDownloadCallback,failDownloadCallback);
return false;
}
function failDownloadCallback() {
logError();
downloadData();
return false;
}
function successDownloadCallback(data) {
saveDataToFile(data,saveSuccessCallback,saveFailCallback);
return false;
}
function saveFailCallback() {
logError();
downloadData();
return false;
}
function saveSuccessCallback() {
downloadData();
return false;
}
Unfortunately, I get “Maximum call stack size exceeded” error sometimes. Is there a better way to do this?
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Answer
I had this issue before and managed to resolved it by using async loop (for) here is an example
const downloadAllfiles = async (arr) => {
for(const x of arr) {
const file = await downloadURL(x.path);
await saveFile(file);
}
console.log('done with all files');
}