visual studio 2015中jquery slider滑动条 control不能滑动是什么原因

In-depth understanding of Magento Of: Alan Storm Translation: Hailong Zhang Chapter II - Magento request distribution and control Model-View-Controller (MVC), Model - View - Controller, from Smalltalk programming language and Xerox Parc. There are ma
Win32 Slider Control的用法 2.1 获得控件的窗口句柄. slider control也是一个窗口,是对话框的子窗口,因此,要用GetDlgItem来实现: backlight_wnd = GetDlgItem(hDlg, IDC_SLIDER_BACKLIGHT); //注意下面示例中蓝色标出的区别 2.2 设置slider control的区间,是给slider control发TBM_SETRANGE消息,比如我设置0到100就是: SendMessage(backli
Slider in the formatting and display a custom Tooltip The following example demonstrates how to use dataTipFormatFunction Slider format shown in Tooltip, and look through the css set the Tooltip. You will see in the code Slider's tickInterval, snapIn
We are familiar with the Magento Custom Theme front the basic method: log back into the System-& Configuration-& General (Group) -& Design, Package, Theme Department may specify what you want Theme directory. But the background Theme customizatio
/how-to-install-magento-theme-ultimate-magento-theme-tutorial/ Unlike single template themes (WordPress) Magento themes are quite different as its layout depends on four elements i.e. Layout – Present is (app/design/front
FLEX to me two days before the blog (
) added a slider control mouse functions of image size, primarily through increases in the picture on the mouse wheel scroll event, and then scroll wheels, get on that scale value (up roller pull
On the topic of how to use seems a bit large, to talk about my personal feelings, a lot of information found online, there are a lot of books, nothing more than goes on the classic table-level access control, but I still feel very good record, not en
Preface I started in 2007 Magento, should be considered the first country to use Magento users. But I have never seriously studied Magento, more remain in the application layer. Although done some plug-ins, but that is According to hoist huapiao it.
Microsoft Slider Control, version 6.0 当前值: 最大值: [Ctrl+A 全选 注:如需引入外部Js需刷新才能执行] 泣红亭:因这控件有危害性(我也中招了..)..就不让它能立即运行了..maya不厚道啊... 7.Microsoft TreeView Control, version 6.0 Microsoft TreeView Control, version 6.0 当前节点: [Ctrl+A 全选 注:如需引入外部Js需刷新才能执行] 8.Scrip
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注意:由于是直接使用windows内置控件,以下的代码都没有考虑兼容问题.要使页面正常显示需要开启浏览器的ActiveX. 1.Microsoft Masked Edit Control, version 6.0 Microsoft Masked Edit Control, version 6.0 [Ctrl+A 全选 注:如需引入外部Js需刷新才能执行] 2.Microsoft Date and Time Picker Control, version 6.0 Microsoft Date a
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ReactOS项目已经由来已久.之前,我一直不知道该对它想些什么.它们总好像跑在离Win32 &乐队花车&千里之外的地方,而今所取得的成就却令人耳目一新. 这一新的发行 带来了相当多的改进. 首先的与最重要的:有了一个新的网络栈--或者更准确地说, lwIP 已经被导入到了ReactOS.由此,ReactOS的稳定性和性能都得到了提升,以致于像种子资源(torrent)等都能很好地下载了.对NT 5.1 驱动的兼容性得到了提升:它还支持上了无线网络,开放的和WEP的均可. 用户们现在可
jQuery Mobile的是一个很好的移动开发框架,你可能已经知道,虽然它有很多难以解决的问题,但是我相信后续版本jquery会修复--我是很喜欢jquery的.这并不是说它很完美无暇,很多开发人员遇到的情况也都难解决,比如:尝试使用代码来添加,更新或删除元素,使用JavaScript的页面跳转.在这篇博客文章中,我列出了一些动态添加组建重新刷新的方法. 1.Textarea field $('body').prepend('&textarea id=&myTextArea&&
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Slider实现的滑动条效果(5)
Slider实现的滑动条效果(5)
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在做了拖放效果之后,我想应该可以做一个更好的了,所以重做一遍,完善和扩展了一些功能。碍于时间没有做得很强大,都是一些基本功能,希望各位多提意见!
【focus和tabIndex】
在KeyBind程序中,除了绑定对象的keydown事件,还不够的,可以在ff测试下面的代码:
&div&style=&width:100&height:100&background-color:#CCC;&&onkeydown=&alert(1)&&&/div& &
无论怎样都触发不了onkeydown事件(ie可以触发),那就奇怪了,按照一般的思路应该是可以的啊。
这个可以从中找到原因:Keyboard events are commonly directed at the element that has the focus.大概就是说键盘按键事件一般指向能获取焦点的元素,就是不能获取焦点的元素就不能触发键盘按键事件了。
难道div就不能获取焦点?用下面的代码测试(ff):
&div&id=&test&&style=&width:100&height:100&background-color:#CCC;&&onfocus=&alert(1)&&&/div& &&script&document.getElementById(&test&).focus();&/script& &
还真的不行,那问题就在于怎么使div能获取焦点了(当然这个是转了不少弯才想出来的)。
最后发现给元素设置tabIndex就能让元素能获取焦点了,如果不需要详细了解的话下面可以略过。
首先看看:The onfocus event occurs when an element receives focus either by the pointing device or by tabbing navigation.
This attribute may be used with the following elements: A, AREA, LABEL, INPUT, SELECT, TEXTAREA, and BUTTON. 当元素通过指定(点击)或tab导航(Tabbing navigation)获得焦点,onfocus事件就会触发。
该属性会使用在以下元素(就是说默认可以获取焦点的元素):A, AREA, LABEL, INPUT, SELECT, TEXTAREA, and BUTTON.
测试下面的代码:
&a&href=&#&&onfocus=&alert(1)&&onkeydown=&alert(2)&&focus&/a& &
果然两个事件都可以执行。
接着看:Those elements that do not support the tabindex attribute or support it and assign it a value of &0& are navigated next. These elements are navigated in the order they appear in the character stream. 这里看得不太明白,关键的意思是给元素设置tabindex为0就可以被导航到了(能获取焦点了)。
测试下面的代码(ff):
&div&tabindex=&0&&style=&width:100&height:100&background-color:#CCC;&&onfocus=&alert(1)&&onkeydown=&alert(2)&&&/div& &
果然两个事件都能触发了。
不过w3c说得很模糊,上倒是很清楚:An element can have focus if the tabIndex property is set to any valid negative or positive integer.
Elements that receive focus can fire the onblur and onfocus events as of Internet Explorer 4.0, and the onkeydown, onkeypress, and onkeyup events as of Internet Explorer 5.
只要元素的tabIndex属性设置成任何有效的整数那么该元素就能取得焦点。元素在取得焦点后就能触发onblur,onfocus,onkeydown, onkeypress和onkeyup事件。
不同tabIndex值在tab order(Tabbing navigation)中的情况:Objects with a positive tabIndex are selected in increasing iIndex order and in source order to resolve duplicates.Objects with an tabIndex of zero are selected in source order. Objects with a negative tabIndex are omitted from the tabbing order.
tabIndex值是正数的对象根据递增的值顺序和代码中的位置顺序来被选择;tabIndex值是0的对象根据在代码中的位置顺序被选择;tabIndex值是负数的对象会被忽略。这个不知道是否符合标准,但貌似ff跟ie是一样的(不同的地方后面会说)。
那么设置一个负的tabIndex值应该是最理想的了。
ps:如果对ff的tabindex有兴趣的话,推荐看看,里面有更详细更专业的分析。
那ie通过一开始的测试,是不是就说明不需要了呢?我们换一个元素测试:
&ul&style=&width:100&height:100&background-color:#CCC;&&onfocus=&alert(1)&&onkeydown=&alert(2)&&&/ul& &
换成ul就又不能触发事件了,怎么搞的。
再看看,里面有一段:The following elements can have focus by default but are not tab stops. .略. applet, div, frameSet, span, table, td.下面的元素默认能获取焦点但不能tab导航:applet, div, frameSet, span, table, td.
看来ie真是&为程序员着想&,但其他元素总不能漏了啊,还是全部都设置tabIndex好了。
终于回到程序上来,首先设置tabIndex:
o.tabIndex&=&-1; &
ff元素获得焦点后会出现一个虚线框,去掉会美观一点:
isIE&||&(o.style.outline&=&&none&); &
ps:如果tabIndex设为0或以上的话ie也会出现虚线框。
绑定了keydown之后,点击一下容器(获取焦点)后就能用方向键控制方向了,但如果(没有获得焦点时)点击滑块,还是触发不了事件。
因为滑块在拖动效果中ie的鼠标捕获和ff的取消默认动作导致容器不能获得焦点,那手动设置可以吗?
是可以的,ff中就是直接在滑块的mousedown事件中执行容器的focus方法获得焦点。
ie本来也是可以的,但ie中当对象执行focus方法时,如果该对象有部分在滚动条外就会自动滚动到适当的位置(还好点击不会这样)。
为了降低影响,程序中把滑块也绑定了键盘控制,这样点击滑块时只要执行滑块的focus方法获得焦点就可以了:
var&oFocus&=&isIE&?&(this.KeyBind(this.Bar),&this.Bar)&:&this.C &addEventHandler(this.Bar,&&mousedown&,&function(){&oFocus.focus();&}); &
ps:由于focus并不会冒泡(w3c标准),所以不用担心滑块的focus导致容器获得焦点。
ps2:w3c的文档还真是难读,还是msdn的易懂。
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