Vadim’s answer might get you some decimal points after the division by 60; not all offsets are perfect multiples of 60 minutes. Here’s what I’m using to format values for ISO 8601 strings: function pad(value) { return value < 10 ? ‘0’ + value : value; } function createOffset(date) { var sign = (date.getTimezoneOffset() > … Read more
No. When the client sends something, whether it is P or H(P) or H(H(P)) anyone who intercepts this can simply resend the exact same thing, thus making any function like this equivalent to using the password directly. That’s why you should use a nonce; The server can give out some random garbage k and the … Read more
This function will convert each color to gray scale and return average of all pixels, so final value will be between 0 (darkest) and 255 (brightest) function getImageLightness(imageSrc,callback) { var img = document.createElement(“img”); img.src = imageSrc; img.style.display = “none”; document.body.appendChild(img); var colorSum = 0; img.onload = function() { // create canvas var canvas = document.createElement(“canvas”); … Read more
Client side routing is the same as server side routing, but it’s ran in the browser. In a typical web application you have several pages which map into different URLs, and each of the pages has some logic and a template which is then rendered. Client-side routing simply runs this process in the browser, using … Read more
The MAC address, by TCP/IP standards, is never communicated outside of the local-area network to which it pertains — routers beyond that LAN don’t even get the information you’re trying to record. There are many other ways to try and identify unique visitors, including matching the user-agent’s details in addition to the IP, serving cookies … Read more
If you’re anything like me your clients won’t want a standard Facebook likebox plugin, they’ll want it all styled and customised their own way. You don’t need to spend all day going round the official documentation wondering if any of it applies to you for something simple like this, it’s quite easy. The confusion arises … Read more
Please go through below steps and you should be clear with request lifecycle and how response is rendered. You type an URL into address bar in your preferred browser. The browser parses the URL to find the protocol, host, port,and path. It forms a HTTP request (that was most likely the protocol) To reach the … Read more
After some time and serious consideration, I will post my own answer. There is nothing that matches TiddlyWiki. As for voluminous information, TW can pretty much handle it. (My early discouragements were due to malformed code.) Difficulty accessing information through the interface becomes an issue before any speed problems. This isn’t to fault the interface … Read more
Your best option is to use a blob url (which is a special url that points to an object in the browser’s memory) : var myBlob = …; var blobUrl = URL.createObjectURL(myBlob); Now you have the choice to simply redirect to this url (window.location.replace(blobUrl)), or to create a link to it. The second solution allows … Read more
The term compound query as used in this answer refers to an SQL SELECT statement involving more than one condition in its WHERE clause. Although such queries are not mentioned in the indexedDB specification, you can approximate the behavior of a compound query by creating an index with a keypath that consists of an array … Read more