Access-Control-Allow-Origin Response Header Explained (CORS) - HTTP/Web Tutorial

In this video tutorial I'll be explaining what the "Access-Control-Allow-Origin" HTTP Response Header is used for, and how to resolve one of the most common errors you'll get when using AJAX or Fetch.
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Пікірлер: 78

  • @dcode-software
    @dcode-software4 жыл бұрын

    After watching this back I realised that I forgot to mention at the end that my example is *purely* trivial, realistically you would instead have some sort of list of white listed origins, and then if your request has one of those, then allow it to access the resource.

  • @jamesdaniels2255

    @jamesdaniels2255

    4 жыл бұрын

    How do we do this?

  • @georgeuba5421

    @georgeuba5421

    4 жыл бұрын

    @James Daniels. Make the Access-Control-Allow-Origin dynamic - use a variable for the urls.

  • @tormak

    @tormak

    4 жыл бұрын

    @@jamesdaniels2255 or make the backend in java, the big brain move

  • @alvinleo2987

    @alvinleo2987

    3 жыл бұрын

    I guess I am kind of off topic but does anyone know of a good website to stream new movies online ?

  • @ahora1026
    @ahora10264 жыл бұрын

    This guy can magically read minds. He uploads a video just when I need to search something but I feel lazy to do so!

  • @robertocantu9095
    @robertocantu9095 Жыл бұрын

    Thank you man!! I had already read A LOT of articles, and understood NOTHING, until I landed here, and you enlighted my path. As usual, a great example is worth much more than thousands of words

  • @giquo
    @giquo2 жыл бұрын

    dud, I just wanna say: thank you so much in all ways possible. Your explanation allowed me to understand CORS once and for all after a lot of years, therefore to give solution to a stuff I put in "Will check this later" years ago. Thank you, thank you

  • @alexachadan1753
    @alexachadan17532 жыл бұрын

    you are a life saver... i have been struggling with cors error for a long time and was finding hard workarounds to get past it.... but today after seeing your video I got how cors works and found the easiest and feasible way to kickout this issue....❤️❤️❤️🔥🔥🔥

  • @4u4000
    @4u40004 жыл бұрын

    This here saved me a lot of headache. Thanks a lot

  • @TreudtLP
    @TreudtLP3 жыл бұрын

    Just Perfect. You really helped me after weeks of research i just got my stuff work👍🏻

  • @MegaNightdude
    @MegaNightdude4 жыл бұрын

    Great video! Helped me solve a problem I've been grappling with for hours

  • @shazkingdom1702

    @shazkingdom1702

    3 жыл бұрын

    hopefully when this video ends, i will have the same feedback

  • @haciendadad
    @haciendadad4 жыл бұрын

    That was a really good explanation!

  • @YeasinRahaman
    @YeasinRahaman4 жыл бұрын

    thanks man, you just saved my head from bursting ! :D

  • @dcode-software

    @dcode-software

    4 жыл бұрын

    No problem I'm glad I could do that for you!

  • @bevedel
    @bevedel3 жыл бұрын

    Awesome tutorial! Thank you.

  • @rodross540
    @rodross5404 жыл бұрын

    This was a really solid explanation.

  • @_.sunnyraj._
    @_.sunnyraj._3 жыл бұрын

    Exactly what I needed Please tell use of mode : no-cors , core , etc

  • @sharifi1375
    @sharifi13753 жыл бұрын

    Thank you very much. It was very useful.

  • @hekoriginaljni6489
    @hekoriginaljni64894 жыл бұрын

    Thanks for the explanation a lot!

  • @dcode-software

    @dcode-software

    4 жыл бұрын

    No worries mate

  • @AkiZukiLenn
    @AkiZukiLenn2 жыл бұрын

    finally a video telling me literally put header(Access-Control-Allow-Origin: *) to fix this issue , thank god , liked and subscribed .

  • @astrix8812
    @astrix88124 жыл бұрын

    Awesommme demonstration! Thanks

  • @zauche81
    @zauche813 жыл бұрын

    @dcode: THANKS A LOT man !!! The hint with not using the absolute URL worked for me ! :)

  • @Heffsta02
    @Heffsta023 жыл бұрын

    Very good explanation thank you.

  • @Rompack
    @Rompack2 жыл бұрын

    Better than every article I've found!

  • @harshilkaneria2107
    @harshilkaneria21074 жыл бұрын

    hello sir, please tell me if php file send data using post method and on sending to another url show me same error.

  • @isaacadam255
    @isaacadam2553 жыл бұрын

    Helpful. Thanks Buddy

  • @jeanmarcpourchel307
    @jeanmarcpourchel3074 жыл бұрын

    Very good explanation !! Would it be the same with a mobile application requesting a php server ?

  • @jaakkawinterroadofficial
    @jaakkawinterroadofficial4 жыл бұрын

    thank you for help, good video!

  • @dcode-software

    @dcode-software

    4 жыл бұрын

    No worries!!!

  • @mustafamahmud2977
    @mustafamahmud29773 жыл бұрын

    Dude you saved my times. Subscribed.

  • @dcode-software

    @dcode-software

    3 жыл бұрын

    All good mate 😁

  • @hitlab
    @hitlab3 жыл бұрын

    Thanks man! Live saver

  • @Cdswjp
    @Cdswjp2 жыл бұрын

    what kind of headers would u set if u were uploading & downloading a zip file that contained source code?

  • @kanundash
    @kanundash4 жыл бұрын

    thank this saved my times

  • @dcode-software

    @dcode-software

    4 жыл бұрын

    No problem!

  • @theITvideos
    @theITvideos3 жыл бұрын

    great accent mate, love from melbourne!

  • @dcode-software

    @dcode-software

    3 жыл бұрын

    Cheers mate!

  • @riccardoconsolandi2087
    @riccardoconsolandi20873 жыл бұрын

    What if the api is on the internet? I’ve been trying to type on my js mode no corse and access control allow origin * but nothing worked, so I saved it as a separate file but still...

  • @shaynemcgregor7095

    @shaynemcgregor7095

    Жыл бұрын

    Hey. Did you ever figure this out? I'm trying to pull data from an external api, but it's not like I can include php on their external files. I tried to include the php header in my own files but it's not working.

  • @mitishah1821
    @mitishah18213 жыл бұрын

    Hey I want to submit the form to payment gateway Right now if I submit it through form.submit() then in accept header application/json is not going but I want to pass so payment gateway know that in which format I am expecting response. If I post data through ajax call it’s gives no cors error

  • @peterchari3839
    @peterchari38393 жыл бұрын

    Excellent tutorial

  • @dcode-software

    @dcode-software

    3 жыл бұрын

    🤙🤙

  • @gauridangui3159
    @gauridangui31592 жыл бұрын

    Hii if the backend is completely different, how do we solve it. Basically I get a 405 error. I'm able to see the response headers but not the response body. I'm trying to access uipath api endpoint for folders. However I m trying to pass the access token, using multiple fetch , but I run into the CoRs error n 405 status code. Could you please shed some light on this ??

  • @FordExplorer-rm6ew
    @FordExplorer-rm6ew4 жыл бұрын

    I wish people would use an external api instead of php , so those of us geared towards express[MERN] didn't have to run both express and apache (phpMyAdmin gives 2 instances of mysql, I know how to fix the config for this , it's fine, but the point remains) It might help explain when we are using Ajax to consume something, And when we are using Ajax on our own server. Client/server, kind of blurred line sometimes, not really, but the point remains. You all are still awesome, I'll still install xampp for the concepts sake (only to uninstall the server I'm not running any prod apps on after) Do people normally put up express apps and apache apps on production at the same time? I have express apps in prod but none in apache / *AMP I wonder what the netstat output for that would look like. Both in dev mode, and in prod. netstat -a -n -p tcp -b

  • @neilrehani.1409
    @neilrehani.14093 жыл бұрын

    what font do you use?

  • @mcpat420
    @mcpat4203 жыл бұрын

    How do I solve this issue on my iPhone? Worked fine last night

  • @bryanferry6409
    @bryanferry64093 жыл бұрын

    how fix this error > Missing required request header. Must specify one of: origin,x-requested-with

  • @assad.rajab-2
    @assad.rajab-2 Жыл бұрын

    Thx man

  • @maheshkumaran4482
    @maheshkumaran44824 жыл бұрын

    What VSCode theme is this? The colors look cool ! :)

  • @chanmyaemaung
    @chanmyaemaung Жыл бұрын

    What is the http origin for android app? I really didn't find any way to get to know the special origin of Android Apps.

  • @nithyasreebalasubramaniam5793
    @nithyasreebalasubramaniam57934 жыл бұрын

    Hi! I've followed the tutorial till last! But am not getting response from php..may I know why this is happening..nd where the problem resides?

  • @daywalker6212

    @daywalker6212

    4 жыл бұрын

    maybe you are not echoing out a response

  • @betterbebachelor
    @betterbebachelor3 жыл бұрын

    thank you thank you thank you so much

  • @nativeandroid
    @nativeandroid3 жыл бұрын

    How to enable in CORS in WordPress?

  • @aliabdulaziz9804
    @aliabdulaziz98044 жыл бұрын

    hey, can u please tell me what type is ur keyboard?

  • @dcode-software

    @dcode-software

    4 жыл бұрын

    CoolerMaster MasterKeys Pro S RGB BLUE

  • @i.am.bot.
    @i.am.bot.2 жыл бұрын

    1:31 what is this software called?

  • @md.ashanaurrahman4059
    @md.ashanaurrahman40593 жыл бұрын

    Thanks

  • @dcode-software

    @dcode-software

    3 жыл бұрын

    Welcome

  • @FirstLast-gk6lg
    @FirstLast-gk6lg4 жыл бұрын

    How would I write this in Javascript?

  • @ragnarok7976

    @ragnarok7976

    3 жыл бұрын

    Far easier and much more securely with less code typed to do the same thing...

  • @pjmclenon

    @pjmclenon

    2 жыл бұрын

    @@ragnarok7976 ya so provide the code if its so easy smarty

  • @ragnarok7976

    @ragnarok7976

    2 жыл бұрын

    @@pjmclenon You shouldn't need it if you know how JS works. You use the same language on the front end and the backend so right out the gate you save a ton of code not having to parse values out of a dump array.

  • @tomrocker7569

    @tomrocker7569

    2 жыл бұрын

    Thank you for the reply but you didn't actually answer my question I can't get the json respond It says cors error and going on memory cuz im not at my computer i put the header setting in the same cide block as the url API endpoint

  • @ragnarok7976

    @ragnarok7976

    2 жыл бұрын

    @@tomrocker7569 Just to clarify, this is a request you are sending from the client and you are not getting a response back from the server but instead a cors error?

  • @moofymoo
    @moofymoo4 жыл бұрын

    mx blue switches? mm!

  • @brazwen
    @brazwen3 жыл бұрын

    I have this problem in just plain Javascript

  • @nIrUbU01
    @nIrUbU012 жыл бұрын

    After watching 50 videos about SOP and CORS I still don't understand it fully. And after your video I still haven't understood what it does completely. I have the feeling that no one is actually explaining it fully, just showing a certain part of it every time.

  • @srvictorbatista
    @srvictorbatista3 жыл бұрын

    06:55

  • @DjGashaFire9-11
    @DjGashaFire9-113 жыл бұрын

    Hey

  • @bikramchettri9405
    @bikramchettri94054 жыл бұрын

    Open a discord chat.

  • @rogerthat365
    @rogerthat3654 жыл бұрын

    This my response Header HTTP/1.1 200 OK X-Powered-By: Express Access-Control-Allow-Origin: * Accept-Ranges: bytes Cache-Control: public, max-age=0 Last-Modified: Tue, 02 Jun 2020 15:11:22 GMT Date: Tue, 02 Jun 2020 15:15:36 GMT ETag: W/"1006-172759647a3" Content-Type: text/html; charset=UTF-8 Content-Length: 4102 But I am still getting the CORS error. What am I doing wrong?

  • @jaypalzinage7656

    @jaypalzinage7656

    3 жыл бұрын

    Pornfilmshoxxrrp hu Ku nu VG cf xd WS ft no NL

  • @pascalbuttafoco3938
    @pascalbuttafoco39382 жыл бұрын

    Pov: du bist hier wegen Julien Bam

  • @BelowAverageRazzleDazzle
    @BelowAverageRazzleDazzle4 жыл бұрын

    Dude - Brevity... Never use 2 words when one will do!!!.