我正在建立一个需要实施轮播的网站。因为这个网站建立在 AngularJS 上,我想使用Angulars Boostrap Carousel,但是,这个轮播似乎一次只允许一个图像。
我需要的是桌面,平板电脑2图像和移动设备上的3张图像。因此,这里也有一个重要的响应式设计元素。
有没有人对此有任何不涉及JQuery的经验?我并不反对,但团队的一名高级成员告诉我,如果有的话,我会尝试寻找替代方案。
我从Angulars bootstrap尝试了什么:
$scope.getPromoURLs = function() {
var subObj = myJSON.response.details.promotionalSpots;
for( var keys in subObj ) {
var value = subObj[keys].promotionUrl;
$scope.slides.push( value );
}
};
// Builts an array of promotional URLS to from a JSON object to source the images
$scope.getPromoURLs();
$scope.addSlide = function () {
// Test to determine if 3 images can be pulled together - FAILS
var newWidth = 600 + slides.length;
slides.push({
image: ''+slides[0]+''+slides[1] // etc
// Tried to stitch images together here
});
};
// TODO Should examine array length not hardcoded 4
for (var i = 0; i < 4; i++) {
$scope.addSlide();
}
答案 0 :(得分:15)
因为该指令支持ng-repeat。您可以轻松更改集合并使用嵌套的ng-repeat在每张幻灯片中设置不同数量的项目。
<ul rn-carousel class="image">
<li ng-repeat="images in imageCollection">
<div ng-repeat="image in images" class="layer">{{ image }}</div>
</li>
</ul>
因为你已经定义了3个断点。我们只需要在视口大小改变时重建imageCollection
数组。
$window.on('resize', function() {
var width = $window.width();
if(width > 900) {
// desktop
rebuildSlide(3);
} else if(width <= 900 && width > 480) {
// tablet
rebuildSlide(2);
} else {
// phone
rebuildSlide(1);
}
// don't forget manually trigger $digest()
$scope.$digest();
});
function rebuildSlide(n) {
var imageCollection = [],
slide = [],
index;
// values is your actual data collection.
for(index = 0; index < values.length; index++) {
if(slide.length === n) {
imageCollection.push(slide);
slide = [];
}
slide.push(values[index]);
}
imageCollection.push(slide);
$scope.imageCollection = imageCollection;
}
答案 1 :(得分:12)
所以,我尝试了这个,以使angularjs Carousel (ui.bootstrap.carousel)能够处理每个动画的多个项目。我还试图应用[使用AngularJS检测响应式网站]。2
看看这里:http://plnkr.co/edit/QhBQpG2nCAnfsb9mpTvj?p=preview
<强>结果:强>
1)一个项目(手机版):
2)两项(平板电脑版):
3)三项(桌面版):
第2部分:
它还可以检测窗口的分辨率,以确定在tutorial之后它是tablet,mobile
还是desktop
...
尝试使用此值:"mobile, tablet, desktop"
查看三个不同的视图版本。
演示 tablet version
:
var app = angular.module('myApp', ['ui.bootstrap', 'angular-responsive']);
app.controller('MainCtrl', function($scope) {
$scope.displayMode = 'mobile'; // default value
$scope.$watch('displayMode', function(value) {
switch (value) {
case 'mobile':
// do stuff for mobile mode
console.log(value);
break;
case 'tablet':
// do stuff for tablet mode
console.log(value);
break;
}
});
});
function CarouselDemoCtrl($scope) {
var whatDevice = $scope.nowDevice;
$scope.myInterval = 7000;
$scope.slides = [{
image: 'http://placekitten.com/221/200',
text: 'Kitten.'
}, {
image: 'http://placekitten.com/241/200',
text: 'Kitty!'
}, {
image: 'http://placekitten.com/223/200',
text: 'Cat.'
}, {
image: 'http://placekitten.com/224/200',
text: 'Feline!'
}, {
image: 'http://placekitten.com/225/200',
text: 'Cat.'
}, {
image: 'http://placekitten.com/226/200',
text: 'Feline!'
}, {
image: 'http://placekitten.com/227/200',
text: 'Cat.'
}, {
image: 'http://placekitten.com/228/200',
text: 'Feline!'
}, {
image: 'http://placekitten.com/229/200',
text: 'Cat.'
}, {
image: 'http://placekitten.com/230/200',
text: 'Feline!'
}];
var i, first = [],
second, third;
var many = 1;
//##################################################
//Need to be changed to update the carousel since the resolution changed
$scope.displayMode = "tablet";
//##################################################
if ($scope.displayMode == "mobile") {many = 1;}
else if ($scope.displayMode == "tablet") {many = 2;}
else {many = 3;}
for (i = 0; i < $scope.slides.length; i += many) {
second = {
image1: $scope.slides[i]
};
if (many == 1) {}
if ($scope.slides[i + 1] && (many == 2 || many == 3)) {
second.image2 = $scope.slides[i + 1];
}
if ($scope.slides[i + (many - 1)] && many == 3) {
second.image3 = $scope.slides[i + 2];
}
first.push(second);
}
$scope.groupedSlides = first;
}
app.directive('dnDisplayMode', function($window) {
return {
restrict: 'A',
scope: {
dnDisplayMode: '='
},
template: '<span class="mobile"></span><span class="tablet"></span><span class="tablet-landscape"></span><span class="desktop"></span>',
link: function(scope, elem, attrs) {
var markers = elem.find('span');
function isVisible(element) {
return element && element.style.display != 'none' && element.offsetWidth && element.offsetHeight;
}
function update() {
angular.forEach(markers, function(element) {
if (isVisible(element)) {
scope.dnDisplayMode = element.className;
return false;
}
});
}
var t;
angular.element($window).bind('resize', function() {
clearTimeout(t);
t = setTimeout(function() {
update();
scope.$apply();
}, 300);
});
update();
}
};
});
希望它有所帮助!