offset

How to get the correct offset top value from webkit (Chrome/Safari) with jQuery? Webkit bug?

由 风格不统一 提交于 2019-12-10 11:47:34
问题 I'm working on code that programmatically positions a div to give the appearance of scrolling. All works fine when using Firefox and Internet Explorer (believe it or not). However, I'm getting bogus values from webkit browsers (Chrome/Safari). It appears to have something to do with whether an element has content. I'm calculating the position of an empty anchor element. Webkit seems to get it right only when the element has visible content. So, I could work around this by having some content

Offset selectionChange Angular

由 回眸只為那壹抹淺笑 提交于 2019-12-10 11:36:33
问题 I have a form which contains 1 drop-down list and 2 inputs. I have a drop down list which contains several objects. When I select one of them, I can retrieve the whole object and I am supposed to filled the two other inputs with the value from the selected object. However, it seems there is an offset when I do that. For instance I have an object banana in my list. If i select it nothing will happen. The 2 other inputs will not be filled at first. Then if I select another object such as apple,

C#编程之串口（三）

由 不打扰是莪最后的温柔 提交于 2019-12-10 10:55:25
这一章我将继续上一章内容进一步完善我们的串口通信，并添加对话框的美观设计。 首先我们说一下双向通讯，上一章我们实现了单向接收功能，这里将说一下发射功能： 数据发送，总共有三种形式，发送字符串类，发送byte类，发送char类。要实现这三种，都必须调用串口写操作方法 SerialPort.Write（） ，该方法对于不同类型的发送，通过方法重载的方式定义了相应的方法： public void Write ( string str); 发送字符串 public void Write ( byte [] buffer, int offset, int count); 发送byte类型 public void Write ( char [] buffer, int offset, int count); 发送char类型 本例程发送的是加密后的序列号码，所以只需调用 myPort.Write(output, 0 ,output.Length); 方法即可。此外我们添加一个清空按键: private void Btn2_Click(object sender, RoutedEventArgs e) { m_textBox1.Text = ""; m_textBox2.Text = ""; } <Button Content="Clear" HorizontalAlignment="Right

gstreamer: how to shift the time of rendering of one stream taken from file

由 浪尽此生 提交于 2019-12-10 10:37:47
问题 I have two media files (say, "file0" and "file1") and I want to merge them into a single one with "picture-in-picture" effect - the content from "file0" to be displayed on the whole window, and the content from "file1" will be shown on the top-left corner in the smaller box. One more point is that the content from "file1" should be rendered some time later from the base time, at the point marked as "X1" on the diagram below. In other words, if I take "videotestsrc" as a video source input, I

Cross Browser issue with jQuery offset()top returning different values

由 梦想与她 提交于 2019-12-10 09:31:21
问题 Essentially, what I'm trying to do, is apply a CSS class to an element in context to the scroll position of the document. Specifically, allowing my sidebar navigation to scroll to 20px below the top of the view port along with the rest of the content, at which point the element becomes of fixed position, thanks to the css class added, until the document is subsequently scrolled back up above that point, when the class is removed and the element again scrolls with the rest of the page content.

Spark Streaming kafka offset manage

由 不羁岁月 提交于 2019-12-10 00:03:08
问题 I had been doing spark streaming jobs which consumer and produce data through kafka. I used directDstream,so I had to manage offset by myself,we adopted redis to write and read offsets.Now there is one problem，when I launched my client,my client need to get the offset from redis,not offset which exists in kafka itself.how show I write my code?Now I had written my code below: kafka_stream = KafkaUtils.createDirectStream( ssc, topics=[config.CONSUME_TOPIC, ], kafkaParams={"bootstrap.servers":

Parallax effect - calculate child offset to parent on scroll

由 情到浓时终转凉″ 提交于 2019-12-09 22:42:15
问题 I'm trying to create a parallax effect whereby an absolutely positioned child element should move at a rate slower than it's parent on scroll. The child will always be 130% height of the parent but the parent can be any height: HTML: <div class="parallax-window lg"> <div class="parallax-image image-1"></div> <div class="parallax-content">Hello World</div> </div> <div class="parallax-window"> <div class="parallax-image image-2"></div> <div class="parallax-content">Hello World</div> </div> CSS:

js的offset，client，scroll的区别

由 删除回忆录丶 提交于 2019-12-09 20:04:27
javascript的offset、client、scroll在使用过程中非常频繁，接下来将对此进行一一介绍，了解其区别和使用方法。 offsetTop 指元素距离上方或上层控件的位置，整型，单位像素。 offsetLeft 指元素距离左方或上层控件的位置，整型，单位像素。 offsetWidth 指元素控件自身的宽度，整型，单位像素。 offsetHeight 指元素控件自身的高度，整型，单位像素。 网页可见区域宽：document.body.clientWidth 网页可见区域高：document.body.clientHeight 网页可见区域宽：document.body.offsetWidth (包括边线的宽) 网页可见区域高：document.body.offsetHeight (包括边线的宽) 网页正文全文宽：document.body.scrollWidth 网页正文全文高：document.body.scrollHeight 网页被卷去的高：document.body.scrollTop 网页被卷去的左：document.body.scrollLeft 网页正文部分上：window.screenTop 网页正文部分左：window.screenLeft 屏幕分辨率的高：window.screen.height 屏幕分辨率的宽：window.screen.width

轻松弄清JavaScript中的offset、scroll、client

由 陌路散爱 提交于 2019-12-09 19:47:17
初次见到这张图，觉得好乱额，所以下面我们来慢慢理顺这个东西。 一、理顺offset 在这里我们可以看到，关于offset共有5个东西需要弄清楚： 　　1、offsetParent 　　2、offsetTop 　　3、offsetLeft 　　4、offsetWidth 　　5、offsetHeight 　　我们根据难易程度把以上5点分为三类来讲解。 第一类： offsetWidth与offsetHeight obj.offsetWidth 指 obj 控件自身的绝对宽度，不包括因 overflow 而未显示的部分，也就是其实际占据的宽度，整型，单位像素。 obj.offsetHeight 指 obj 控件自身的绝对高度，不包括因 overflow 而未显示的部分，也就是其实际占据的高度，整型，单位像素。 offsetWidth=(border-width)*2+(padding-left)+(width)+(padding-right) 　 offsetHeight=(border-width)*2+(padding-top)+(height)+(padding-bottom) 第二类： offsetLeft与offsetTop obj.offsetTop 指 obj 相对于版面或由 offsetParent 属性指定的父坐标的计算上侧位置，整型，单位像素。 obj

How to read files with an offset from Hadoop using Java

由 南笙酒味 提交于 2019-12-09 17:58:30
问题 Problem: I want to read a section of a file from HDFS and return it, such as lines 101-120 from a file of 1000 lines. I don't want to use seek because I have read that it is expensive. I have log files which I am using PIG to process down into meaningful sets of data. I've been writing an API to return the data for consumption and display by a front end. Those processed data sets can be large enough that I don't want to read the entire file out of Hadoop in one slurp to save wire time and
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