我正在使用carouFredSel创建一个垂直旋转木马.一切都很好,除了我希望部分项目显示在底部,裁剪,而不是隐藏.这样,它将向用户指示可以滚动的其他项目.
我一直在阅读文档,但到目前为止还无法判断我所追求的是否可行.
看看JSFiddle,看看我的意思.观看页面上最底部的项目.
使用Javascript
$("ul").carouFredSel({
direction: "up",
align: "top",
width: 100,
height: "100%",
items: {
visible: "variable",
width: 100,
height: "variable"
},
scroll: {
items: 1,
mousewheel: true,
easing: "swing",
duration: 500
},
auto: false,
prev: {
button: ".prev",
key: "up"
},
next: {
button: ".next",
key: "down"
}
});?
Run Code Online (Sandbox Code Playgroud) 试图检查对象是否有类.看起来很简单,但我无法让它工作.这是我的代码:
使用Javascript
$('ul.nav li').click(function(){
if $(this).hasClass('selected') {
alert('This is selected!');
}
else {
alert('This is not selected!');
}
});
$('ul.nav li:first-child').addClass('selected');
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HTML
<ul class="nav">
<li>Who we work for</li>
<li>Articles and interviews</li>
<li>Job openings</li>
<li>What the #%!$@ is Post Typography?</li>
</ul>
<ul class="content">
<li>This is who we work for.</li>
<li>These are articles and interviews.</li>
<li>These are our job openings.</li>
<li>This is some info about Post Typography.</li>
</ul>
Run Code Online (Sandbox Code Playgroud) 我遇到了一个问题,当我scrollViewDidScroll在我的子类中调用方法时UIScrollView什么也没有发生。这是我的代码:
AppDelegate.m
#import "ScrollView.h"
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
CGRect screenRect = [[self window] bounds];
ScrollView *scrollView = [[ScrollView alloc] initWithFrame:screenRect];
[[self window] addSubview:scrollView];
[scrollView setContentSize:screenRect.size];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
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滚动视图.m
#import "AppDelegate.h"
#import "ScrollView.h"
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
NSString *imageString = [NSString stringWithFormat:@"image"];
UIImage *image …Run Code Online (Sandbox Code Playgroud) 使用SASS,是否可以在单个十六进制代码上执行多种颜色操作?我想以编程方式减轻并增加5%的饱和度.
saturate($color, $amount)
lighten($color, $amount)
Run Code Online (Sandbox Code Playgroud) 在WordPress中,我从帖子中抓取附加图像并将其显示在无序列表中.它的伟大工程,但我现在需要获得图像height和width,在我得到了同样的方式src.这是我的代码:
PHP
$post_thumbnail_id = get_post_thumbnail_id( $iPostID );
foreach( $arrKeys as $key) {
if( $key == $post_thumbnail_id )
continue;
$sImageUrl = wp_get_attachment_url($key);
$sImgString = '<li><img src="' . $sImageUrl . '" alt="Thumbnail Image" /></li>';
echo $sImgString;
}
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知道我怎么能这样做吗?
当我从tableView中删除一行时,我遇到了崩溃.不知道发生了什么事.这是我的代码:
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
let items = days[indexPath.row]
self.removeItems(items, indexPath: indexPath)
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return days.count
}
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为removeItems
func removeItems(items: [CKRecord], indexPath: NSIndexPath) {
for item in items {
db.deleteRecordWithID(item.recordID) { (record, error) -> Void in
if error != nil {
println(error.localizedDescription)
}
dispatch_async(dispatch_get_main_queue()) { () -> Void in
if let index = find(exercises, item) {
exercises.removeAtIndex(index)
}
}
}
}
days.removeAtIndex(indexPath.row)
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Automatic)
}
Run Code Online (Sandbox Code Playgroud) 我有一个看起来像这样的数组:
let records = [
["created": NSDate(timeIntervalSince1970: 1422600000), "type": 0],
["created": NSDate(timeIntervalSince1970: 1422600000), "type": 0],
["created": NSDate(timeIntervalSince1970: 1422600000), "type": 1],
["created": NSDate(timeIntervalSince1970: 1422600000), "type": 1],
["created": NSDate(timeIntervalSince1970: 1422700000), "type": 2],
["created": NSDate(timeIntervalSince1970: 1422700000), "type": 2],
]
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如何将数组过滤为仅包含唯一类型的记录?
我有一个字符串数组,在我的应用程序包中是文件名.有些是PNG,有些则是MOV.有没有一个很好的方法来检查Swift中的字符串后缀?
在下面的加载动画中,我试图创建一个“彗星”,该彗星似乎从一边跳到另一边。除了彗星的“尾巴”需要从左向右反弹时,我几乎已经实现了它。
当它从右向左弹跳时,CSS渐变的角度应为90度。当它从左向右弹跳时,角度应为-90度。
这可能吗?
div.frame {
width: 480px;
margin: auto;
}
@keyframes loading-bar-animation {
from {margin-left: 0; width: 0}
50% {width: 100px}
to {margin-left: 100%; width: 0}
}
div.loading-bar {
width: 100px;
height: 2px;
background: linear-gradient(90deg, rgba(0,122,255,1), rgba(0,122,255,0));
animation-name: loading-bar-animation;
animation-duration: 1s;
animation-iteration-count: infinite;
animation-direction: alternate;
animation-timing-function: ease-in-out;
}Run Code Online (Sandbox Code Playgroud)
<div class="frame">
<div class="loading-bar"></div>
</div> Run Code Online (Sandbox Code Playgroud)
尝试编写一个简单的jQuery函数,它将对象的索引加倍,并将该值作为CSS分配给top对象.因此,如果有5个对象,则顶部的顶部值为20,第二个的值为40,第三个将设置为60,依此类推.这就是我所拥有的:
$('ul.nav li').each(function(){
var $n = $('ul.nav li').index(this);
$(this).css('top', 20 * n );
});
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我究竟做错了什么?