2
财产“的className”我是新来的这一点,会很感激,如果有人可以解释:的Javascript滑块:遗漏的类型错误:无法设置的不确定
为什么我得到遗漏的类型错误:无法设置属性“的className '用下面的代码未定义?
require(
["jquery"],
function($) {
function Slider() {
this.slides = document.querySelectorAll('#slides .slide');
this.currentSlide = 0;
this.slideInterval = 0;
}
Slider.prototype.startSlider = function(slideDuration) {
this.slideInterval = setInterval(this.nextSlide, slideDuration);
};
Slider.prototype.nextSlide = function() {
this.slides[ this.currentSlide ].className = 'slide';
this.currentSlide = (this.currentSlide+1) % this.slides.length;
this.slides[ this.currentSlide ].className = 'slide showing';
};
Slider.prototype.goToThis = function() {
};
Slider.prototype.goToNext = function() {
};
Slider.prototype.goToPrev = function() {
};
var slider = new Slider();
slider.startSlider(1000);
});
当我这样做没有Slider()类它工作正常。
var slides = document.querySelectorAll('#slides .slide');
var currentSlide = 0;
var slideInterval = setInterval(nextSlide,2000);
function nextSlide() {
slides[currentSlide].className = 'slide';
currentSlide = (currentSlide+1)%slides.length;
slides[currentSlide].className = 'slide showing';
}
的可能的复制[?如何访问正确的\'这\'回调内(https://stackoverflow.com/questions/20279484/how-to-access-the-correct-这回调内) –
MDN是一个很好的资源,如果你想了解更多:https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Operators/this – phuhgh
伟大的联系这是我需要的,谢谢。 – HelloWorld