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What are the differences between Deferred, Promise and Future in JavaScript?
... has signature like: function (path, callback, context)
and listens to onload && onreadystatechange */
$(function () {
getScript('path/to/CodeMirror', getJSMode);
// onreadystate is not reliable for callback args.
function getJSMode() {
getScript('path/to/CodeMirror/mode...
CSS filter: make color image with transparency white
...tContext("2d");
var img = new Image;
//wait for the image to load
img.onload = function() {
//Draw the original image so that you can fetch the colour data
ctx.drawImage(img,0,0);
var imgData = ctx.getImageData(0, 0, canvas.width, canvas.height);
/*
imgData.data i...
Using HTML5/Canvas/JavaScript to take in-browser screenshots
... const result = await new Promise((resolve, reject) => {
video.onloadedmetadata = () => {
video.play()
video.pause()
// from: https://github.com/kasprownik/electron-screencapture/blob/master/index.js
const canvas = document.createElemen...
Is JavaScript guaranteed to be single-threaded?
...ote to others commenters: Even though setTimeout/setInterval, HTTP-request onload events (XHR), and UI events (click, focus, etc.) provide a crude impression of multi-threadedness - they are still all executed along a single timeline - one at a time - so even if we don't know their execution order b...
How do I pass variables and data from PHP to JavaScript?
... }
var oReq = new XMLHttpRequest(); // New request object
oReq.onload = function() {
// This is where you handle what to do with the response.
// The actual data is found on this.responseText
alert(this.responseText); // Will alert: 42
};
oReq.open("get", ...
Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the La
...usly, so it doesn't lag
// the web application
var a = new FileReader();
a.onload = function(e) {
// Capture result here
console.log(e.target.result);
};
a.readAsDataURL(blob);
Allowing user to save data
Apart from obvious solution - opening new window with your dataURL as URL you can d...
Can I run javascript before the whole page is loaded?
...
Or put it all in a function and put it in <body onload="doIt()>".
– Justin Liu
May 31 at 18:54
...
How to validate an email address using a regular expression?
...ail addresses that you probably wouldn't want to accept such as "a<body/onload=alert('lol.com?'+document.cookies) @a.a>" which is a valid email address in perl's Email::Valid (which uses that huge regex), and can be exploited for XSS rt.cpan.org/Public/Bug/Display.html?id=75650
...
AngularJS : Initialize service with asynchronous data
...HR, which you can customize.
var oReq = new XMLHttpRequest();
oReq.onload = xhrCallback;
oReq.open("get", "/api/overview", true); // your specific API URL
oReq.send();
})
Now, your NavData constant exists. Go ahead and inject it into a controller or service:
angular.module('MyApp...
How to write WinForms code that auto-scales to system font and dpi settings?
...= MaxSize, don't do that in the Designer... do that in your constructor or OnLoad override... set both MinSize and MaxSize to your properly-scaled Size.
All of the Controls on a particular Panel or Container should either use Anchoring or Docking. If you mix them, the auto-scaling done by that Panel...