Vanilla Typist is a Javascript Front-End micro-library that simulate someone writing on a keyboard. This library provides the method keyboard and backspace to HTML Elements. These methods can be used on any HTML Tag with no childrens like <p>, <span>, empty <div>, <a> ... And on input and textarea.

HTMLElement.keyboard({[target], [writeSpeed], [aleaSpeed], [textToWrite]}, callback);

• target can be "html", "value" or "placeholder" depending on the tag's type (div, input, textarea)
• writeSpeed is the speed between two letters (in ms)
• aleaSpped is added to the writeSpeed because nobody can type at a constant speed.
• textToWrite is the text that will be written in your HTMLElement (it will be added if there is already some text)
• callback is the callback

all parameters are optional.

var elem = document.getElementsByClassName('elem')[0];
var input = document.getElementById("input");
var textarea = document.getElementById("textarea");

input.setAttribute("placeholder", "");
input.keyboard({ target: "placeholder", writeSpeed: 50, aleaSpeed: 90, textToWrite: "There's a lady who's sure all that glitters is gold" }, function() {
    input.keyboard({ target: "value", TextToWrite: "And she's buying a stairway to heaven." }, function() {
        input.backspace({ target: "value" } function() {
            console.log("removed")
        });
    });
});