js random key code example

Example 1: javascript get random string

function getRandomString(length) {
    var randomChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    var result = '';
    for ( var i = 0; i < length; i++ ) {
        result += randomChars.charAt(Math.floor(Math.random() * randomChars.length));
    }
    return result;
}

//usage: getRandomString(20); // pass desired length of random string

Example 2: how to generate random string in javascript

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

Example 3: js object random key

var randomProperty = function (obj) {
    var keys = Object.keys(obj);
    return obj[keys[ keys.length * Math.random() << 0]];
};