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I have to run a loop for 50,000 times, but it is hanging browser. what could be the best way to do it.
sample :
for(var i=0;i<50000;i++)
{
// Here I am calculating 50 different values.
}
I can't use php because values are displayed directly in html page.
what I can do for it?
thanks
You could try a webworker. Here is a package that might simplify things for you.
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I have a credits score on my app, I need to update the database every 30 days how can I do this? sometimes the server crashes because of errors and restarting the instance and I assume the function would not run anymore, is there any other possibility to make sure users get their records updated? Thanks
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Since a year and a half I am trying to figure out how some websites update their content in real time without AJAX method.
Please see this example website: https://pro.btcturk.com/en/basic/exchange/BTC_TRY
That website is changing many texts within content in different timing.
It means that when the server is updated with new values in the database then the website is listening to database changes and then reflecting/delivering inside content without ajax calls.
Can someone give an example how to achieve such functionality possibly using Javascript or PHP normal hand-code appreciated?
Thank you
You can see the process here:
More information here: Websockets
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I am changing my javascript code but browser somehow using old code which i deleted, somehow caching old code. Why is it happening suddenly? And how to prevent it?
Use Ctr+Shift+R for every run.
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So I wish to loop the javascript going to a certain page (without actually reloading/clearing console), then execute
href="javascript:doSomething(9)"
and then loop that by doing a function
Please help, thanks!
Assuming you want it to repeat - you can use an interval.
setInterval(function(){
doSomething(9);
},100); // the 100 is for 100 miliseconds
If you want it to repeat without having to wait (that is, block the code) you can use a normal while loop:
while(true){ // will loop forever since the condition is always "true"
doSomething(9);
}
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As an example, let's assume I want to prevent users from using auto-clickers. Is it possible, and are there accepted best practices when doing this?
Nope, it is not possible. Someone can always turn off JavaScript, modify it, run their own JS-code, etc, etc. JavaScript should never ever be used for security reasons.
However, for AJAX-requests you could implement a minimum interval server-side (like on Stack Overflow).