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Change text color based on brightness of the covered background area?
...trick:
header {
overflow: hidden;
height: 100vh;
background: url(https://www.w3schools.com/html/pic_mountain.jpg) 50%/cover;
}
h2 {
color: white;
font: 900 35vmin/50vh arial;
text-align: center;
mix-blend-mode: difference;
filter: drop-shadow(0.05em 0.05em orange);
...
How to remove non-alphanumeric characters?
...ld'); // helloworld
preg_replace('/[^\p{L}\p{N} ]+/', '', 'abc@~#123-+=öäå'); // abc123öäå
preg_replace('/[^\p{L}\p{N} ]+/', '', '你好世界!@£$%^&*()'); // 你好世界
Note: This is a very old, but still relevant question. I am answering purely to provide supplementary information...
jQuery checkbox change and click event
... and say true. Just in case you want to fix it.
– GµårÐïåñ
Jun 23 at 17:50
add a comment
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How to access a preexisting collection with Mongoose?
...el.
Try something like the following, either schema-mapped:
new Schema({ url: String, text: String, id: Number},
{ collection : 'question' }); // collection name
or model mapped:
mongoose.model('Question',
new Schema({ url: String, text: String, id: Number}),
...
android start activity from service
... Please help me for open application from background service I have use Firebase (FCM) service. I want to open My Calling UI screen from My App So please help me for that
– Dipanki Jadav
Oct 20 '16 at 9:31
...
how to change namespace of entire project?
... answered Sep 7 '15 at 13:50
Selçuk ErmayaSelçuk Ermaya
4733 bronze badges
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BLE（一）概述&工作流程&常见问题 - 创客硬件开发 - 清泛IT社区，...
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0x1 BLE概述“蓝牙”，即Bluetooth，是斯堪的纳维亚语中 Blåtand / Blåtann 的英化版本。该词是十世纪的一位国王Harald Bluetooth的绰号，相传他将纷争不断的丹麦部落统一为一个王国，并引入了基督教。蓝牙技术开发者Jim Kardach于1997...
Suppress deprecated import warning in Java
In Java, if you import a deprecated class:
6 Answers
6
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How do I adb pull ALL files of a folder present in SD Card
...ff the sd card but exclude one of the sub paths
– GµårÐïåñ
Feb 8 '16 at 1:11
I wonder if Android has tar? A sim...
u'\ufeff' in Python string
...परीक्षा|പരിശോധന|פּרובירן|kiểm tra|Ölçek|'
e8 = u.encode('utf-8') # encode without BOM
e8s = u.encode('utf-8-sig') # encode with BOM
e16 = u.encode('utf-16') # encode with BOM
e16le = u.encode('utf-16le') # encode without BOM
e16be = u.encode('ut...