停止有限Javascript循环
我似乎无法让下面的代码停止无限循环。我是JS新手,在codepen上发现了这个。对于我正在进行的项目来说,这将非常有用,但前提是我能让它无限期地停止循环。在输入最后一个短语后让它停止将是理想的。想法停止有限Javascript循环,javascript,loops,Javascript,Loops,我似乎无法让下面的代码停止无限循环。我是JS新手,在codepen上发现了这个。对于我正在进行的项目来说,这将非常有用,但前提是我能让它无限期地停止循环。在输入最后一个短语后让它停止将是理想的。想法 <style> body { background-color:#333; text-align: center; } * { color:#fff; text-decoration: none;} </style&g
<style>
body {
background-color:#333;
text-align: center;
}
* { color:#fff; text-decoration: none;}
</style>
<script>
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);
}
}
// INJECT CSS
var css = document.createElement("style");
css.type = "text/css";
css.innerHTML = ".typewrite > .wrap { border-right: 0.08em solid #fff}";
document.body.appendChild(css);
};
</script>
<h1>
<a href="" class="typewrite" data-period="2000" data-type='[ "Discover", "Learn", "Train", "Prepare", "Share" ]'>
<span class="wrap"></span>
</a>
</h1>
通过检查loopNum是否仍然小于单词数组的长度,可以在最后一个元素之后停止它
if(this.loopNum < this.toRotate.length){
setTimeout(function() {
that.tick();
}, delta);
}
身体{
背景色:333;
文本对齐:居中;
}
*{颜色:fff;文本装饰:无;}
var TxtType=函数、旋转、周期{
this.toRotate=toRotate;
this.el=el;
this.loopNum=0;
this.period=parseIntperiod,10 | | 2000;
this.txt=;
这是滴答声;
this.isDeleting=false;
};
TxtType.prototype.tick=函数{
var i=this.loopNum%this.toRotate.length;
var fullTxt=this.toRotate[i];
如果这个是删除{
this.txt=fullTxt.substring0,this.txt.length-1;
}否则{
this.txt=fullTxt.substring0,this.txt.length+1;
}
this.el.innerHTML=+this.txt+;
var=这个;
var delta=200-数学随机*100;
如果this.isDeleting{delta/=2;}
如果!this.isDeleting&&this.txt===fullTxt{
delta=这个周期;
this.isDeleting=true;
}否则,如果this.isDeleting&&this.txt=={
this.isDeleting=false;
这个.loopNum++;
δ=500;
}
如果this.loopNumif (!this.isDeleting && this.txt === fullTxt) {
delta = this.period;
this.isDeleting = true;
if (this.loopNum + 1 === this.toRotate.length) { // add this to stop
return;
}
var TxtType=函数、旋转、周期{
this.toRotate=toRotate;
this.el=el;
this.loopNum=0;
this.period=parseIntperiod,10 | | 2000;
this.txt=;
这是滴答声;
this.isDeleting=false;
};
TxtType.prototype.tick=函数{
var i=this.loopNum%this.toRotate.length;
var fullTxt=this.toRotate[i];
如果这个是删除{
this.txt=fullTxt.substring0,this.txt.length-1;
}否则{
this.txt=fullTxt.substring0,this.txt.length+1;
}
this.el.innerHTML=+this.txt+;
var=这个;
var delta=200-数学随机*100;
如果这个是删除{
delta/=2;
}
如果!this.isDeleting&&this.txt===fullTxt{
delta=这个周期;
this.isDeleting=true;
如果this.loopNum+1==this.toRotate.length{//添加此项以停止
回来
}
}否则,如果this.isDeleting&&this.txt=={
this.isDeleting=false;
这个.loopNum++;
δ=500;
}
setTimeoutfunction{
那就是滴答声;
},三角洲;
};
window.onload=函数{
var elements=document.getElementsByClassName'typewrite';
对于变量i=0;i您的问题被代码重载。请阅读并使用此网站以获得更好的结果。