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JavaScript - generate random string of size n characters
3 points
In this article, we would like to show you how to generate a random string in JavaScript.
In the below example, randrom string is generated using predefined alphabet. The string is generated by seleting random characters from the alphabet.
Runnable example:
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var alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';2
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function randomString(length) {4
var result = '';5
for (var i = 0; i < length; ++i) {6
result += alphabet[Math.floor(alphabet.length * Math.random())];7
}8
return result;9
}10
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// Usage example:13
// // Example random strings:14
console.log(randomString(5)); // VhMsQ15
console.log(randomString(10)); // eVOznvSxWw16
console.log(randomString(20)); // ZZomN9sxyaL9vfsGE3to
