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app.js
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app.js
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// Typing effect
var TxtType = 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;
};
TxtType.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 = 200 - 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('typewrite');
for (var i=0; i<elements.length; i++)
{
var toRotate = elements[i].getAttribute('data-type');
var period = elements[i].getAttribute('data-period');
if (toRotate)
{
new TxtType(elements[i], JSON.parse(toRotate), period);
}
}
};