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how to release localhost from Error: listen EADDRINUSE
...than Ctrl+C to shut down after using npm start.
– David Mason
May 11 '13 at 23:43
Your npm start script might be more ...
What is this Javascript “require”?
...you write:
example.js
module.exports = "some code";
Now, you want this string "some code" in another file.
We will name the other file otherFile.js
In this file, you write:
otherFile.js
let str = require('./example.js')
That require() statement goes to the file that you put inside of it,...
How to make HTML input tag only accept numerical values?
...ue.
The input is not part of a form. Hence it doesn't get submitted, so validating during submission is not an option. I want the user to be unable to type in any characters other than numbers.
...
How to allow to accept only image files?
...file" name="myImage" accept="image/*" />
Note that this only provides a hint to the browser as to what file-types to display to the user, but this can be easily circumvented, so you should always validate the uploaded file on the server also.
It should work in IE 10+, Chrome, Firefox, S...
How to set a value to a file input in HTML?
...new form
var formData = new FormData();
formData.append('someUploadIdentifier', blob, 'someFileName.json');
// action after uploading happens
xhr.onload = function(e) {
console.log("File uploading completed!");
};
// do the uploading
console.log("File up...
Get last n lines of a file, similar to tail
... process on bytes as In text files (those opened without a "b" in the mode string), only seeks relative to the beginning of the file are allowed (the exception being seeking to the very file end with seek(0, 2)).:
eg: f = open('C:/.../../apache_logs.txt', 'rb')
def tail(f, lines=20):
total_l...
How to attribute a single commit to multiple developers?
...p of devs, so you could essentially add anybody to this list even if they didn't work on a feature and GitHub would treat it as if they did. However, this shouldn't be an issue in most cases.
e.g. Co-authored-by: Linus Torvalds <torvalds@linux-foundation.org>
With normal authors or signing gro...
appearanceWhenContainedIn in Swift
...s, nil];
}
@end
Just be sure to #import "UIAppearance+Swift.h" in your bridging header.
Then, to call from Swift (for example):
# Swift 2.x:
UITextField.my_appearanceWhenContainedIn(MyViewController.self).keyboardAppearance = .Light
# Swift 3.x:
UITextField.my_appearanceWhenContained(in: MyView...
How can I find an element by CSS class with XPath?
...ch cases like class="Testvalue" or class="newTest", @Tomalak's version provided in the comments is better:
//div[contains(concat(' ', @class, ' '), ' Test ')]
If you wished to be really certain that it will match correctly, you could also use the normalize-space function to clean up stray whites...
How to write an inline IF statement in JavaScript?
... It doesn't actually have to be assigned to anything. The right hand side elements can simply be function calls.
– jfriend00
Apr 22 '12 at 17:41
7
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