We have implemented Cyclic redundancy check codes using JavaScript and html.
Here we use HTML and CSS for the front-end .
We used simple XOR to calculate the code word .
We use simple XOR to decode also.
We have implemented 1 bit error correction.The actual algorithm is to use idea of checksums and make tables
But every divisor will have its own table and using that is not easy. So, we used an alternative
We change every bit at once and check it.
The code is properly indendated.
The buttons on the navigation bar gives brief idea about CRC,Polynomials or divisors ,1 bit error correction algorithm.
For detailed reading a link is attached bellow it.

An web based tool for CRC codes

• Run the command
  

git clone https://github.com/Sohamraje137/cyclic-redundancy-check

• Enter the project directory by entering
  

cd cyclic-redundancy-check

• open DC1.html using any browser