Hugo Zhang Hugo Zhang - 2 months ago 18
CSS Question

Changing color of text after it is typed out again effect?

I'm using this typing carousel effect I got from codepen for my website, however, I need help modifying it. Right now, all it does it cycle through a list of words and types them out.

The desired effect I would like is that the text color of each separate word that is typed out is different. The words:


  • nerdy.

  • simple.

  • pure JS.

  • pretty.

  • fun!



would all be different colors when they are typed out. How can I accomplish this?

Codepen Example



var TxtRotate = function(el, toRotate, period) {
this.toRotate = toRotate;
this.el = el;
this.loopNum = 0;
this.period = parseInt(period, 10) || 2000;
this.txt = '';
this.tick();
this.isDeleting = false;
};

TxtRotate.prototype.tick = function() {
var i = this.loopNum % this.toRotate.length;
var fullTxt = this.toRotate[i];

if (this.isDeleting) {
this.txt = fullTxt.substring(0, this.txt.length - 1);
} else {
this.txt = fullTxt.substring(0, this.txt.length + 1);
}

this.el.innerHTML = '<span class="wrap">' + this.txt + '</span>';

var that = this;
var delta = 300 - Math.random() * 100;

if (this.isDeleting) {
delta /= 2;
}

if (!this.isDeleting && this.txt === fullTxt) {
delta = this.period;
this.isDeleting = true;
} else if (this.isDeleting && this.txt === '') {
this.isDeleting = false;
this.loopNum++;
delta = 500;
}

setTimeout(function() {
that.tick();
}, delta);
};

window.onload = function() {
var elements = document.getElementsByClassName('txt-rotate');
for (var i = 0; i < elements.length; i++) {
var toRotate = elements[i].getAttribute('data-rotate');
var period = elements[i].getAttribute('data-period');
if (toRotate) {
new TxtRotate(elements[i], JSON.parse(toRotate), period);
}
}
// INJECT CSS
var css = document.createElement("style");
css.type = "text/css";
css.innerHTML = ".txt-rotate > .wrap { border-right: 0.08em solid #666 }";
document.body.appendChild(css);
};

html,
body {
font-family: 'Raleway', sans-serif;
padding: 1em 2em;
font-size: 18px;
background: #222;
color: #aaa
}

h1,
h2 {
font-weight: 200;
margin: 0.4em 0;
}

h1 {
font-size: 3.5em;
}

h2 {
color: #888;
font-size: 2em;
}

<link href="https://fonts.googleapis.com/css?family=Raleway:200,100,400" rel="stylesheet" type="text/css" />
<h1>This pen is
<span class="txt-rotate" data-period="2000" data-rotate='[ "nerdy.", "simple.", "pure JS.", "pretty.", "fun!" ]'></span>
</h1>
<h2>A single &lt;span&gt; is all you need.</h2>




Answer Source

You can do this by defining an array of colours:

var colours = ["red", "green", "blue", "yellow", "orange"]

and setting it each loop:

this.el.innerHTML = '<span class="wrap" style="color: ' + colours[i] + '">'+this.txt+'</span>';

Forked example: https://codepen.io/mark_c/pen/WEavqy?editors=1010