我正在尝试修改 Nivo-slider JavaScript 代码以使用内置于滑块中的一种效果。我一直在玩这个代码很长一段时间没有成功。下面代码的最底部有一些过渡效果选项。当我尝试选择一个时，它只能从第三张幻灯片开始起作用。这意味着第一张幻灯片具有“淡入淡出”效果，第二张幻灯片具有“无效果”第三张幻灯片具有“slideLeft”效果，然后从第四张幻灯片开始，我尝试全面应用的任何效果都将应用于剩余的幻灯片幻灯片。
我想知道是否有人可以帮助我理解我做错了什么？我只是想选择一个过渡效果并将其应用于我的所有幻灯片......
这是 JavaScript 代码：
// Generate random effect
if(settings.effect === 'random'){
anims = new Array('sliceDownRight','sliceDownLeft','sliceUpRight','sliceUpLeft','sliceUpDown','sliceUpDownLeft','fold','fade',
'boxRandom','boxRain','boxRainReverse','boxRainGrow','boxRainGrowReverse');
currentEffect = anims[Math.floor(Math.random()*(anims.length + 1))];
if(currentEffect === undefined) { currentEffect = 'fade'; }
}
// Run random effect from specified set (eg: effect:'fold,fade')
if(settings.effect.indexOf(',') !== -1){
anims = settings.effect.split(',');
currentEffect = anims[Math.floor(Math.random()*(anims.length))];
if(currentEffect === undefined) { currentEffect = 'fade'; }
}
// Custom transition as defined by "data-transition" attribute
if(vars.currentImage.attr('data-transition')){
currentEffect = vars.currentImage.attr('data-transition');
}
// Run effects
vars.running = false;
var timeBuff = 0,
i = 0,
slices = '',
firstSlice = '',
totalBoxes = '',
boxes = '';
if(currentEffect === 'sliceDown' || currentEffect === 'sliceDownRight' || currentEffect === 'sliceDownLeft'){
createSlices(slider, settings, vars);
timeBuff = 0;
i = 0;
slices = $('.nivo-slice', slider);
if(currentEffect === 'sliceDownLeft') { slices = $('.nivo-slice', slider)._reverse(); }
slices.each(function(){
var slice = $(this);
slice.css({ 'top': '0px' });
if(i === settings.slices-1){
setTimeout(function(){
slice.animate({opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
}, (100 + timeBuff));
} else {
setTimeout(function(){
slice.animate({opacity:'1.0' }, settings.animSpeed);
}, (100 + timeBuff));
}
timeBuff += 50;
i++;
});
} else if(currentEffect === 'sliceUp' || currentEffect === 'sliceUpRight' || currentEffect === 'sliceUpLeft'){
createSlices(slider, settings, vars);
timeBuff = 0;
i = 0;
slices = $('.nivo-slice', slider);
if(currentEffect === 'sliceUpLeft') { slices = $('.nivo-slice', slider)._reverse(); }
slices.each(function(){
var slice = $(this);
slice.css({ 'bottom': '0px' });
if(i === settings.slices-1){
setTimeout(function(){
slice.animate({opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
}, (100 + timeBuff));
} else {
setTimeout(function(){
slice.animate({opacity:'1.0' }, settings.animSpeed);
}, (100 + timeBuff));
}
timeBuff += 50;
i++;
});
} else if(currentEffect === 'sliceUpDown' || currentEffect === 'sliceUpDownRight' || currentEffect === 'sliceUpDownLeft'){
createSlices(slider, settings, vars);
timeBuff = 0;
i = 0;
var v = 0;
slices = $('.nivo-slice', slider);
if(currentEffect === 'sliceUpDownLeft') { slices = $('.nivo-slice', slider)._reverse(); }
slices.each(function(){
var slice = $(this);
if(i === 0){
slice.css('top','0px');
i++;
} else {
slice.css('bottom','0px');
i = 0;
}
if(v === settings.slices-1){
setTimeout(function(){
slice.animate({opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
}, (100 + timeBuff));
} else {
setTimeout(function(){
slice.animate({opacity:'1.0' }, settings.animSpeed);
}, (100 + timeBuff));
}
timeBuff += 50;
v++;
});
} else if(currentEffect === 'fold'){
createSlices(slider, settings, vars);
timeBuff = 0;
i = 0;
$('.nivo-slice', slider).each(function(){
var slice = $(this);
var origWidth = slice.width();
slice.css({ top:'0px', width:'0px' });
if(i === settings.slices-1){
setTimeout(function(){
slice.animate({ width:origWidth, opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
}, (100 + timeBuff));
} else {
setTimeout(function(){
slice.animate({ width:origWidth, opacity:'1.0' }, settings.animSpeed);
}, (100 + timeBuff));
}
timeBuff += 50;
i++;
});
} else if(currentEffect === 'fade'){
createSlices(slider, settings, vars);
firstSlice = $('.nivo-slice:first', slider);
firstSlice.css({
'width': slider.width() + 'px'
});
firstSlice.animate({ opacity:'1.0' }, (settings.animSpeed*2), '', function(){ slider.trigger('nivo:animFinished'); });
} else if(currentEffect === 'slideInRight'){
createSlices(slider, settings, vars);
firstSlice = $('.nivo-slice:first', slider);
firstSlice.css({
'width': '0px',
'opacity': '1'
});
firstSlice.animate({ width: slider.width() + 'px' }, (settings.animSpeed*2), '', function(){ slider.trigger('nivo:animFinished'); });
} else if(currentEffect === 'slideInLeft'){
createSlices(slider, settings, vars);
firstSlice = $('.nivo-slice:first', slider);
firstSlice.css({
'width': '0px',
'opacity': '1',
'left': '',
'right': '0px'
});
firstSlice.animate({ width: slider.width() + 'px' }, (settings.animSpeed*2), '', function(){
// Reset positioning
firstSlice.css({
'left': '0px',
'right': ''
});
slider.trigger('nivo:animFinished');
});
} else if(currentEffect === 'boxRandom'){
createBoxes(slider, settings, vars);
totalBoxes = settings.boxCols * settings.boxRows;
i = 0;
timeBuff = 0;
boxes = shuffle($('.nivo-box', slider));
boxes.each(function(){
var box = $(this);
if(i === totalBoxes-1){
setTimeout(function(){
box.animate({ opacity:'1' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
}, (100 + timeBuff));
} else {
setTimeout(function(){
box.animate({ opacity:'1' }, settings.animSpeed);
}, (100 + timeBuff));
}
timeBuff += 20;
i++;
});
} else if(currentEffect === 'boxRain' || currentEffect === 'boxRainReverse' || currentEffect === 'boxRainGrow' || currentEffect === 'boxRainGrowReverse'){
createBoxes(slider, settings, vars);
totalBoxes = settings.boxCols * settings.boxRows;
i = 0;
timeBuff = 0;
// Split boxes into 2D array
var rowIndex = 0;
var colIndex = 0;
var box2Darr = [];
box2Darr[rowIndex] = [];
boxes = $('.nivo-box', slider);
if(currentEffect === 'boxRainReverse' || currentEffect === 'boxRainGrowReverse'){
boxes = $('.nivo-box', slider)._reverse();
}
boxes.each(function(){
box2Darr[rowIndex][colIndex] = $(this);
colIndex++;
if(colIndex === settings.boxCols){
rowIndex++;
colIndex = 0;
box2Darr[rowIndex] = [];
}
});
// Run animation
for(var cols = 0; cols < (settings.boxCols * 2); cols++){
var prevCol = cols;
for(var rows = 0; rows < settings.boxRows; rows++){
if(prevCol >= 0 && prevCol < settings.boxCols){
/* Due to some weird JS bug with loop vars
being used in setTimeout, this is wrapped
with an anonymous function call */
(function(row, col, time, i, totalBoxes) {
var box = $(box2Darr[row][col]);
var w = box.width();
var h = box.height();
if(currentEffect === 'boxRainGrow' || currentEffect === 'boxRainGrowReverse'){
box.width(0).height(0);
}
if(i === totalBoxes-1){
setTimeout(function(){
box.animate({ opacity:'1', width:w, height:h }, settings.animSpeed/1.3, '', function(){ slider.trigger('nivo:animFinished'); });
}, (100 + time));
} else {
setTimeout(function(){
box.animate({ opacity:'1', width:w, height:h }, settings.animSpeed/1.3);
}, (100 + time));
}
})(rows, prevCol, timeBuff, i, totalBoxes);
i++;
}
prevCol--;
}
timeBuff += 100;
}
}
};
// Shuffle an array
var shuffle = function(arr){
for(var j, x, i = arr.length; i; j = parseInt(Math.random() * i, 10), x = arr[--i], arr[i] = arr[j], arr[j] = x);
return arr;
};
// For debugging
var trace = function(msg){
if(this.console && typeof console.log !== 'undefined') { console.log(msg); }
};
// Start / Stop
this.stop = function(){
if(!$(element).data('nivo:vars').stop){
$(element).data('nivo:vars').stop = true;
trace('Stop Slider');
}
};
this.start = function(){
if($(element).data('nivo:vars').stop){
$(element).data('nivo:vars').stop = false;
trace('Start Slider');
}
};
// Trigger the afterLoad callback
settings.afterLoad.call(this);
return this;
};
$.fn.nivoSlider = function(options) {
return this.each(function(key, value){
var element = $(this);
// Return early if this element already has a plugin instance
if (element.data('nivoslider')) { return element.data('nivoslider'); }
// Pass options to plugin constructor
var nivoslider = new NivoSlider(this, options);
// Store plugin object in this element's data
element.data('nivoslider', nivoslider);
});
};
//Default settings
$.fn.nivoSlider.defaults = {
/*'sliceDownRight','sliceDownLeft','sliceUpRight','sliceUpLeft','sliceUpDown','sliceUpDownLeft','fold','fade',
'boxRandom','boxRain','boxRainReverse','boxRainGrow','boxRainGrowReverse*/
effect: 'fold',
slices: 15,
boxCols: 8,
boxRows: 4,
animSpeed: 500,
pauseTime: 3000,
startSlide: 0,
directionNav: true,
controlNav: false,
controlNavThumbs: false,
pauseOnHover: true,
manualAdvance: false,
prevText: 'Prev',
nextText: 'Next',
randomStart: false,
beforeChange: function(){},
afterChange: function(){},
slideshowEnd: function(){},
lastSlide: function(){},
afterLoad: function(){}
};
$.fn._reverse = [].reverse;
})(jQuery);