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Inputting a default image in case the src attribute of an html is not valid?
...l for me. Maybe you wanna use JQuery to hook the event.
<img src="foo.jpg" onerror="if (this.src != 'error.jpg') this.src = 'error.jpg';">
Updated with jacquargs error guard
Updated: CSS only solution
I recently saw Vitaly Friedman demo a great CSS solution I wasn't aware of. The idea is ...
How can I embed a YouTube video on GitHub wiki pages?
...[](https://www.youtube.com/watch?v=YOUTUBE_VIDEO_ID_HERE)
For more information about Markdown look at this Markdown cheatsheet on GitHub.
For more information about Youtube image links look this question.
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How does Google's Page Speed lossless image compression work?
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I use jpegoptim to optimize JPG files and optipng to optimize PNG files.
If you're on bash, the command to losslessly optimize all JPGs in a directory (recursively) is:
find /path/to/jpgs/ -type f -name "*.jpg" -exec jpegoptim --strip-all {} \;
You ...
MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
...port，Mongodb中的mongoexport工具可以把一个collection导出成JSON格式或CSV格式的文件，可以通过参数指定导出的数据项；mongoimport将相应文件导入到collection中。一、导出工具mongoexport
Mongodb中的mongoexport工具可以把一个collection导出成JSON...
Can you call Directory.GetFiles() with multiple filters?
...method to retrieve a list of files of multiple types, such as mp3 's and jpg 's. I have tried both of the following with no luck:
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Why can't I do ?
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shouldn't you use "file://C:/localfile.jpg" instead of "C:/localfile.jpg"?
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Convert PDF to image with high resolution
... \
-quality 100 \
-flatten \
-sharpen 0x1.0 \
24-18.jpg
It results in the left image. Compare this to the result of my original command (the image on the right):
(To really see and appreciate the differences between the two, right-click on each and select "Open Image ...
【App Inventor 2 数据可视化】使用柱状图和饼图收集数据 - App应用开发 - ...
...ngement2和HorizontalArrangement3是放置图表的空框。这些方便的格式化组件来自App Inventor的布局抽屉。
horizontalarrangement4包含删除应用程序中所有数据的重置按钮。
3. 查看代码：点击App Inventor中的Blocks逻辑设计查看初始项目的代码...
Is it possible to set the equivalent of a src attribute of an img tag in CSS?
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Use content:url("image.jpg").
Full working solution (Live Demo):
<!doctype html>
<style>
.MyClass123{
content:url("http://imgur.com/SZ8Cm.jpg");
}
</style>
<img class="MyClass123"/>
Tested and working...
How to hide image broken Icon using only CSS/HTML?
...'none'"/>
or
<img src="Error.src" onerror="this.src='fallback-img.jpg'"/>
Update
You can apply this logic to multiple images at once by doing something like this:
document.addEventListener("DOMContentLoaded", function(event) {
document.querySelectorAll('img').forEach(function...