我制作了一个jQuery插件,可以充当幻灯片。我的所有问题都是它先消失,然后下一个图像逐渐消失。这有点奇怪。我整天都在想,而且我真的很喜欢它。谁能帮助我?这是信息:
以下是托管当前幻灯片的网站列表:
www.ms-models.com
www.royal-fci.com
现在,问题是:
幻灯片显然会有一堆图像淡入淡出。现在,幻灯片显示第一个图像淡出然后使下一个图像淡入。我希望幻灯片在当前图像已经开始淡出时开始淡入下一个图像。就像许多网站上的数百个幻灯片一样。无需提供链接。
这是插件脚本本身:
(function(){
/* function read_line (path_to_file, container, tag, url_prefix)
{
myObject = {}; //myObject[numberline] = "textEachLine";
$.get(, functipath_to_fileon(myContentFile) {
var lines = myContentFile.split("\r\n");
for(var i in lines)
{
myObject[i] = i;
container.append('<'+tag+'>'+"<img src='"+url_prefix+'/'+lines[i]+"'>"+'</img>'+'</'+tag+'>');
}
}, 'text');// end of anonymous function
} */
$.fn.mtSlideGallery = function(options){
var options = $.extend({
fullWidth : false, // this makes a full background slideshow
FadeIn : 2, // this is the duration of fading in
FadeOut : 2, // this is the duration of fading out
visibilityDuration : 2, // this is the duration of visible image
startSlide : 1, // this is the first slide when the page loads
height : '100%',
height_fixed : true,
enable_error : false,
enable_gallery : false,
slide_previous : '.slide-left-control', // this is the name of class for previous-picture-handle
slide_next : '.slide-right-control', // this is the name of class for next-picture-handle
print_output : false,
print_area : '.slideshow-label',
seo_campatible : false, // this allows the script to print the title of each slide out into a h1-h6 tag
seo_suggestion : 'h2' // this allows the user to specify which h1-h6 tag be used. default is h6
/*auto_generate_from_file : false, // if true, then it will generate the div tag based on a file given
auto_generate_url : false, // if true, then a url_prefix is added to each line of text
auto_generate_tag : 'div', // the tag inside which the image tags nest. default is div and it is recommended no to change
auto_generate_url_prefix : "" // this is the url added to each image address. Depends on auto_generate_url options*/
}, options)
// develope $fn protype
return this.each(function(){
if(options.print_output === true)
{
var text_for_output = $(this).children('div').eq(options.startSlide).children('img').attr('alt');
$(options.print_area).text(text_for_output);
}
if(options.fullWidth === true)
{
$("body").css({'padding' : '0', 'margin' : '0'});
$("body").css({'overflow' : 'hidden'});
$("html").css({'padding' : '0', 'margin' : '0'});
$(this).css({'width' : '100%', 'height' : options.height});
$(this).css({'margin' : '0', 'padding' : '0'});
}
if(options.height_fixed === true)
{
$(this).css({'overflow' : 'hidden'});
}
var slideWrapper = $(this);
var slidesGroup = slideWrapper.children('div');
slidesLength = slidesGroup.length;
if(options.enable_error == true)
{
if(options.startSlide > slidesLength)
{
alert("Please correct the \"slideStart\" option. The number has to be less than the total number of images.")
}
}
i = options.startSlide;
slidesGroup.not(":eq("+i+")").hide();
console.log(slidesLength);
////////////////////// Print To label if true
var print_label = function(i)
{
var label = slidesGroup.eq(i).children('img').attr('alt');
$(options.print_area).text(label);
}
;
///////////////////// End of printing label
//////////////// GALLERY SLIDESHOW IF ENABLED USES THIS SCRIPT
if(options.enable_gallery === true)
{
$(options.slide_previous).click(function(event){ // this is a click event for the previous picture in the queue
event.preventDefault();
event.stopPropagation();
slidesGroup.eq(i).hide();
if(i === slidesLength)
{
i=0;
}
i -= 1;
slidesGroup.eq(i).show();
if(options.print_output === true)
{
print_label(i);
}
});
$(options.slide_next).click(function(event){ // this is a click event for the next picture in the queue
event.preventDefault();
event.stopPropagation();
slidesGroup.eq(i).hide();
if(i === slidesLength)
{
i=0;
}
i += 1;
slidesGroup.eq(i).show();
if(options.print_output === true)
{
print_label(i);
}
});
}
////////////////////// END OF GALLERY-ENABLED SCRIPT
////////////////////////////////////////////////////////
var slideShow = function () {
slidesGroup.eq(i).fadeOut(options.FadeOut*1000, function(){
slidesGroup.eq(i).hide();
i += 1;
if(i === slidesLength)
{
i=0;
}
slidesGroup.eq(i).fadeIn(options.FadeIn*1000);
if(options.print_output === true)
{
print_label(i);
}
})
}
setInterval(slideShow, options.visibilityDuration*1000);
})
}
})(jQuery)
答案 0 :(得分:1)
现在,幻灯片显示第一张图片淡出然后制作了 下一张图片渐渐消失了。我希望幻灯片在下一张图片中逐渐消失 当前图像已经开始淡出时的图像。
这里的问题是,在下一张幻灯片中淡入淡出的调用是匿名回调函数的一部分,该函数在初始jQuery动画完成之前不会触发。您需要重写代码,以便$.fadeOut()
和$.fadeIn()
函数同时发生:
var transition = function() {
//Determine the index of the next slide to show, based on the current index
var next_index = (current_index < slidesLength - 1) ? current_index + 1 : 0;
//Fade out the 'old' slide while fading in the 'new' slide
slidesGroup.eq(current_index).fadeOut({
duration: options.FadeOut*1000,
start: function() {
slidesGroup.eq(next_index).fadeIn({
duration: options.FadeIn*1000
});
},
complete: function() {
//Update the value of current_index
current_index = next_index;
}
});
}
但是,此功能几乎将您限制为仅向前转换。您可以包含一个函数参数,该参数指定将确定“下一张幻灯片”索引的转换方向(向前和向后)。
工作jsFiddle:http://jsfiddle.net/gh25s/
编辑:为了澄清,您需要替换这部分代码:
var slideShow = function () {
slidesGroup.eq(i).fadeOut(options.FadeOut*1000, function(){
slidesGroup.eq(i).hide();
i += 1;
if(i === slidesLength) {
i=0;
}
slidesGroup.eq(i).fadeIn(options.FadeIn*1000);
if(options.print_output === true) {
print_label(i);
}
});
};
用这个:
var slideShow = function() {
//Determine the index of the next slide to show, based on the current index
var next_index = (i < slidesLength - 1) ? i + 1 : 0;
//Fade out the 'old' slide while fading in the 'new' slide
slidesGroup.eq(i).fadeOut({
duration: options.FadeOut*1000,
start: function() {
slidesGroup.eq(next_index).fadeIn({
duration: options.FadeIn*1000
});
},
complete: function() {
//Update the value of i
i = next_index;
}
});
}
此外,在整个代码中使用变量名i
会让人感到困惑。我建议给它一个更有意义,更具描述性的名称,如current_index
。像i
这样的变量名通常被读作临时的局部变量,用于某种迭代。