ookangzheng/nodejs-generate-uuid.md

## nodejs-generate-uuid.md

      
        

                
      Raw
    
  

        
        
          
            
          
          
            
              nodejs-generate-uuid.md
            
          
        
      
      
    UUID Collection
URL browser ASCII code ref
https://www.w3schools.com/tags/ref_urlencode.ASP
supercharge
const Str = require('@supercharge/strings')

const random = Str.random()  
// 'zONHF73w_4M3cmv7GZpXG'

const random_WithFiftySymbols = Str.random(50)  
// 'iO3quoYg265hlzq30E8RelQc0LOKle4R0yk6CMbgeHgGNcm_mR'

node crypto
const Crypto = require('crypto')

function randomString(size = 21) {  
  return Crypto
    .randomBytes(size)
    .toString('base64')
    .slice(0, size)
}

console.log(  
  randomString()
)
// '/VuPgyBlk/aZjPADhMqQk'

Be careful when converting the random data to a base64 string because this string may contain characters like the forward-slash which could have side effects in your app.
Pro - native Node.js functionality - customizable the string length - generates a URL-friendly string when using .toString('hex')
Contra - no URL-friendly when using .toString('base64‘) because it may contain chars like a forward slash (/) - using .toString('hex') reduces the alphabet to numbers and the lowercase characters a-e