Hey guys, in this example we will learn how to generate random string of any size using random characters from A-Z, a-z, and 0-9.
Code:
// Declare all required characters
const all_characters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
function generateRandomString(length) {
let result_string = '';
const characters_length = all_characters.length;
for ( let i = 0; i < length; i++ ) {
result_string += all_characters.charAt(Math.floor(Math.random() * characters_length));
}
return result_string;
}
console.log(generateRandomString(8));
Output:
DqYNH6YbIn the example 1, we used Math.random() method which returns a random number/characters from the specified characters (in this case A-Z, a-z, 0-9).
We have used the for loop is used to iterate through the number which is passed into the generateRandomString() function. During each iteration/loop, a random character is generated from specified string and is added to resulting string.
The generated output will be different each time we execute generateRandomString() function.
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