High performance functions that calculate the value of a string or file, hash, are much faster than md5, are used directly by themselves, have a very low repetition rate, and have enough applications of 1.

var I64BIT_TABLE =
 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-'.split('');

function hash(input){
 var hash = 5381;
 var i = input.length - 1;

 if(typeof input == 'string'){
  for (; i > -1; i--)
   hash += (hash << 5) + input.charCodeAt(i);
 }
 else{
  for (; i > -1; i--)
   hash += (hash << 5) + input[i];
 }
 var value = hash & 0x7FFFFFFF;

 var retValue = '';
 do{
  retValue += I64BIT_TABLE[value & 0x3F];
 }
 while(value >>= 6);

 return retValue;
}

This is the end of this article, I hope you enjoy it.