Simple pure JavaScript plugin to rotate text snippets as if they were being typed.
A Pen by Gregory Schier on CodePen.
Forked from gschier/Simple-Typing-Carousel-.markdown
Last active
August 29, 2015 14:13
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| <h1>This pen is | |
| <span | |
| class="txt-rotate" | |
| data-period="2000" | |
| data-rotate='[ "nerdy.", "simple.", "pure JS.", "pretty.", "fun!" ]'></span> | |
| </h1> | |
| <h2>A single <span> is all you need.</h2> |
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| 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: 0.1em solid #666 }"; | |
| document.body.appendChild(css); | |
| }; |
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