src

Variable for img src=

由 喜你入骨 提交于 2019-12-17 19:34:41
问题 I have a question. Firstly, I am not going to pretend that I know what I am talking about here. I am a newbie to http and JavaScript. I think my question may be answered in this post IMG SRC tags and JavaScript but I thought I would explain the exact thing I am trying to achieve in case there is an easier way. I have a webpage, I want to display an image on it. Only thing is, the image is coming from an automated system monitor, the image is automatically generated each day and placed in a

OpenCV TypeError: Expected cv::UMat for argument 'src' - What is this?

由 坚强是说给别人听的谎言 提交于 2019-12-17 16:34:46
问题 Disclaimer: huge openCV noob Traceback (most recent call last): File "lanes2.py", line 22, in canny = canny(lane_image) File "lanes2.py", line 5, in canny gray = cv2.cvtColor(imgUMat, cv2.COLOR_RGB2GRAY) TypeError: Expected cv::UMat for argument 'src' What exactly is 'src' referring to? 回答1: src is the first argument to cv2.cvtColor . The error you are getting is because it is not the right form. cv2.Umat() is functionally equivalent to np.float32() , so your last line of code should read:

Toggling an image src with jQuery

由 守給你的承諾、 提交于 2019-12-17 16:27:15
问题 I wrote some code to toggle the src of an image and also to pause/resume the jQuery cycle2 plugin. I'm not sure why it isn't working and would appreciate some help. $('.play-pause').click(function(){ if ($(this).attr('src', '/images/template/pause.png')) { $(this).attr('src', '/images/template/play.png'); $('.cycle-slideshow').cycle('pause'); } else if ($(this).attr('src', '/images/template/play.png')) { $(this).attr('src', '/images/template/pause.png'); $('.cycle-slideshow').cycle('resume');

Javascript : get <img> src and set as variable?

由 这一生的挚爱 提交于 2019-12-17 09:42:35
问题 If the img below is present <img id="youtubeimg" src="http://i1.ytimg.com/vi/VK4ah66jBvE/0.jpg"/> and the script is <script> var youtubeimgsrc = "something here" document.write(''+youtubeimgsrc+'') </script> and the result should be http://i1.ytimg.com/vi/VK4ah66jBvE/0.jpg what can i do to get the image source and set as a variable. 回答1: As long as the script is after the img , then: var youtubeimgsrc = document.getElementById("youtubeimg").src; See getElementById in the DOM specification. If

How to properly reference local resources in HTML?

由 [亡魂溺海] 提交于 2019-12-17 05:38:27
问题 As it turns out, referencing local resources can be a rub point for some. I'm looking for a canonical answer to local resource referencing, and what they mean. Take these examples, what is the difference between these reference paths? <img src="myfile.png" /> (no leading slash) <img src="/myfile.png" /> (with leading slash) <img src="folder/myfile.png" /> (no leading slash / in subfolder) <img src="/folder/myfile.png" /> (with leading slash / in sub folder) <img src="../folder/myfile.png" />

How to properly reference local resources in HTML?

由 别说谁变了你拦得住时间么 提交于 2019-12-17 05:37:42
问题 As it turns out, referencing local resources can be a rub point for some. I'm looking for a canonical answer to local resource referencing, and what they mean. Take these examples, what is the difference between these reference paths? <img src="myfile.png" /> (no leading slash) <img src="/myfile.png" /> (with leading slash) <img src="folder/myfile.png" /> (no leading slash / in subfolder) <img src="/folder/myfile.png" /> (with leading slash / in sub folder) <img src="../folder/myfile.png" />

Change image source with JavaScript

由 徘徊边缘 提交于 2019-12-17 05:03:40
问题 So I'm new with JavaScript (this is actually my first attempt to make something work) and I'm having a bit of trouble. I thought I had enough knowledge to make this work, I've even googled for tutorials and scripts that could help me work this out but nothing really helped. I can't seem to change the image source, heres the code that I have so far: <script type="text/javascript"> function changeImage(a) { document.getElementById("img").src=a.src; } </script> <div id="main_img"> <img id="img"

Get img src with PHP

由 ⅰ亾dé卋堺 提交于 2019-12-17 03:03:57
问题 I would like to get the SRC attribute into a variable in this example: <img border="0" src="/images/image.jpg" alt="Image" width="100" height="100" /> So for example - I would like to get a variable $foo = "/images/image.jpg" . Important! The src attribute will be dynamic , so it mustn't be hardcoded. Is there any quick and easy way to do this? Thanks! EDIT: The image will be a part of a huge string that is basically the content of a news story. So the image is just a part of that. EDIT2:

Dynamically add script tag with src that may include document.write

由 陌路散爱 提交于 2019-12-16 22:08:17
问题 I want to dynamically include a script tag in a webpage however I have no control of it's src so src="source.js" may look like this. document.write('<script type="text/javascript">') document.write('alert("hello world")') document.write('</script>') document.write('<p>goodbye world</p>') Now ordinarily putting <script type="text/javascript" src="source.js"></script> in the head works fine but is there any other way I can add source.js dynamically using something like innerHTML? jsfiddle of

HTML 图像

由 旧城冷巷雨未停 提交于 2019-12-16 15:43:59
图像标签（<img>）和源属性（Src） 在 HTML 中，图像由 <img> 标签定义。 <img> 是空标签，意思是说，它只包含属性，并且没有闭合标签。 要在页面上显示图像，你需要使用源属性（src）。src 指 "source"。源属性的值是图像的 URL 地址。 定义图像的语法是： <img src="url" /> URL 指存储图像的位置。如果名为 "boat.gif" 的图像位于 www.w3school.com.cn 的 images 目录中，那么其 URL 为 http://www.w3school.com.cn/images/boat.gif。 浏览器将图像显示在文档中图像标签出现的地方。如果你将图像标签置于两个段落之间，那么浏览器会首先显示第一个段落，然后显示图片，最后显示第二段。 替换文本属性（Alt） alt 属性用来为图像定义一串预备的可替换的文本。替换文本属性的值是用户定义的。 <img src="boat.gif" alt="Big Boat"> 在浏览器无法载入图像时，替换文本属性告诉读者她们失去的信息。此时，浏览器将显示这个替代性的文本而不是图像。为页面上的图像都加上替换文本属性是个好习惯，这样有助于更好的显示信息，并且对于那些使用纯文本浏览器的人来说是非常有用的。 基本的注意事项 - 有用的提示： 假如某个 HTML 文件包含十个图像
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