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我有这个麻烦,我的代码(简化):的setInterval和clearInterval发出
$(document).ready(function() {
var theta = 0;
carouselNext = function() {
theta += 1;
}
var carouselInterval = window.setInterval(carouselNext, 1000);
var spinning = true;
$("#stopstart").click.function() {
if (spinning) {
clearInterval(carouselInterval);
spinning = false;
} else {
carouselInterval = setInterval(carouselNext, CAROUSEL_DURATION);
spinning = true;
}
}
编辑:这里是我的代码的完整版
var CAROUSEL_DURATION = 5000;
var html = '';
$(document).ready(function(){
$.getJSON("/static/js/users.json", function(data){
$.each(data, function(index, student){
html += '<div class="student">';
html += '<h2>' + student.level + ' of the Month</h2>';
html += '<h4>' + student.firstname + ' ' + student.lastname + '</h4>';
html += '<p>' + student.class + '</p></br>';
html += '</div>';
});
$('.students').html(html);
$('.students').cycle({
fx: 'fade',
pause: '1',
prev: '#prev',
next: '#next',
speed: '500',
timeout: 10000
});
// catch JSON reading error
}).fail(function(d, textStatus, error) {
console.error("getJSON failed, status: " + textStatus + ", error: "+error)
});
$(".my-btn").click(function() {
$('<li>').text("click").prependTo('.posts');
});
var carousel = document.getElementById('carousel');
var navButtons = document.querySelectorAll('#navigation button');
var panelCount = carousel.children.length;
var transformProp = Modernizr.prefixed('transform');
var theta = 0;
$("#next").on('click', function() {
theta += (360/panelCount) * -1;
carousel.style[ transformProp ] = 'translateZ(-288px) rotateY(' + theta + 'deg)';
});
carouselNext = function() {
theta += (360/panelCount) * -1;
carousel.style[ transformProp ] = 'translateZ(-288px) rotateY(' + theta + 'deg)';
}
var carouselInterval = window.setInterval(carouselNext, CAROUSEL_DURATION);
var spinning = true;
// stop carousel spinning
$("#stop-start").click(function() {
if (spinning) {
clearInterval(carouselInterval);
spinning = false;
} else {
carouselInterval = setInterval(carouselNext, CAROUSEL_DURATION);
spinning = true;
}
})
// clicking on carousel navigation buttons
onNavButtonClick = function(event) {
var increment = parseInt(event.target.getAttribute('data-increment'));
theta += (360/panelCount) * increment * -1;
carousel.style[ transformProp ] = 'translateZ(-288px) rotateY(' + theta + 'deg)';
};
for (var i=0; i < 2; i++) {
navButtons[i].addEventListener('click', onNavButtonClick, false);
}
});
当我加载正如预料的那样,theta正在每秒钟滴答1次,如预期的那样...
当我点击“stopstart”按钮时,theta停止响起,如预期的那样...
但是,当我再次单击“stopstart”时,theta会返回NaN。我不明白为什么会这样。任何想法,我要去错了吗?
什么是$(“#stopstart”)。click.function'?它应该是'$(“stopstart”)。click(function' – Barmar
你已经简化了你的代码太多了。你能发布足够的代码,以便它能够真正执行并演示这个问题吗? – Barmar
它适用于我。可能与关闭有关,请示出一个不太简单的例子 –