Generate random letters in javascript and count how many times each letter has occurred?

html, javascript

Solution

Shorter way to generate such a string using `String.fromCharCode`:

for (var i = 0, letter; i < 10; i++) {
    setTimeout(function() {
        letter = String.fromCharCode(97 + Math.floor(Math.random() * 26));
        out.appendChild(document.createTextNode(letter)); // append somewhere
    }, 2000 * i);
}

And complete demo covering all the problems in this question: http://jsfiddle.net/p8Pjq/

Problem

I want to generate a string of random letters say 10 letters from a-z one after the other i.e. the next letter should be displayed after the previous letter after a certain delay, later, I want to calculate the number of times each letter has been generated, unlike what I have done previously, i.e. I have taken a predefined array of letters and generated them accordingly.

Original source

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