1var crypto = require("crypto");
2var id = crypto.randomBytes(20).toString('hex');
3
4// "bb5dc8842ca31d4603d6aa11448d1654"

1function randomString(length) {
2		var result           = '';
3		var characters       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=-';
4		var charactersLength = characters.length;
5		for ( var i = 0; i < length; i++ ) {
6		   result += characters.charAt(Math.floor(Math.random() * charactersLength));
7		}
8		return result;
9	 }
10randomString(4);

1function getRandomString(length) {
2    var randomChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
3    var result = '';
4    for ( var i = 0; i < length; i++ ) {
5        result += randomChars.charAt(Math.floor(Math.random() * randomChars.length));
6    }
7    return result;
8}
9
10//usage: getRandomString(20); // pass desired length of random string

1function makeid(length) {
2    var result           = '';
3    var characters       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
4    var charactersLength = characters.length;
5    for ( var i = 0; i < length; i++ ) {
6      result += characters.charAt(Math.floor(Math.random() * 
7 charactersLength));
8   }
9   return result;
10}
11
12console.log(makeid(5));

1// program to generate random strings
2
3const result = Math.random().toString(36).substring(2,7);
4console.log(result);

1 Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15);