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React.js: onChange event for contentEditable
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Edit: See Sebastien Lorber's answer which fixes a bug in my implementation.
Use the onInput event, and optionally onBlur as a fallback. You might want to save the previous contents to prevent sending extra events.
I'd personally have th...
How to replace all occurrences of a string?
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As of August 2020, greenfield browsers have support for the String.replaceAll() method defined by the ECMAScript 2021 language specification. For older/legacy browser support, the below still applies.
str = str.replace(/abc/g, '');
In response to c...
Replace words in a string - Ruby
...the first instance of "Robert".
To replace all instances use gsub/gsub! (ie. "global substitution"):
sentence.gsub! 'Robert', 'Joe'
The above will replace all instances of Robert with Joe.
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What is the fastest way to compare two sets in Java?
I am trying to optimize a piece of code which compares elements of list.
9 Answers
9
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How can I use goto in Javascript?
...trivial programs like an endless LATHER RINSE repeat cycle—the possibilities afforded by goto are endless and you can even make a Hello, world! message to the JavaScript console 538 times, like this:
var i = 0;
[lbl] start:
console.log("Hello, world!");
i++;
if(i < 538) goto start;
You can rea...
What is the !! (not not) operator in JavaScript?
...not an operator, it's just the ! operator twice.
Real World Example "Test IE version":
const isIE8 = !! navigator.userAgent.match(/MSIE 8.0/);
console.log(isIE8); // returns true or false
If you ⇒
console.log(navigator.userAgent.match(/MSIE 8.0/));
// returns either an Array or null
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Properties order in Margin
... clockwise:
WPF start West (left->top->right->bottom)
Netscape (ie CSS) start North (top->right->bottom->left)
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Get file size, image width and height before upload
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Multiple images upload with info data preview
Using HTML5 and the File API
Example using URL API
The images sources will be a URL representing the Blob object
<img src="blob:null/026cceb9-edr4-4281-babb-b56cbf759a3d">
const EL_browse = document.getElem...
What is http multipart request?
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A HTTP multipart request is a HTTP request that HTTP clients construct to send files and data over to a HTTP Server. It is commonly used by browsers and HTTP clients to upload files to the server.
What it looks like
See Multipart Content-Type
See multipart/form-data
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Android webview & localStorage
I have a problem with a webview which may access to the localStorage by an HTML5 app. The test.html file informs me that local
storage is'nt supported by my browser (ie. the webview ). If you have any suggestion..
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