How can i write captcha code in html

Answer 1

you can use client side as well and you can delete the script just after the page has loaded using document.getElementById("captchascript").innerHTML="";

https://code.sololearn.com/WmfjpuieRQw1/?ref=app

Hope this helps;

Answer 2

Technically Prajwal is correct. However functions are still going to be in memory and if ever the developer tools are loaded while this page is opening, all the code will be available in the 'network' and 'source' tab. The point of the captcha is that the only machine that knows the true correct answer, should be the Web server which leaves server-side scripting as the only true to form option.

Answer 3

You have to use some session variables and a server side scripting language to do a captcha style authentication.