html2canvas.js not capturing image. it leaves white space where the image occurs. I have tried a lot but i cannot find solution . Help is appreciated 🙂 Answer It works, when I host it in the server. The security restrictions causes it to fail.
Tag: javascript
Stop Div scrolling to the top at Page Refresh using Jquery
I have two pages with the same css class and the same id, but since they are on different pages, the id is the separator. Page 1) Got a Div being refreshed every 5 seconds. The div has scrolling set to scroll so that user can scroll, but when the refresh happens the div scrolling goes back to the top.
How to check if an object is a Promise?
Whether it’s an ES6 Promise or a Bluebird Promise, Q Promise, etc. How do I test to see if a given object is a Promise? Answer How a promise library decides If it has a .then function – that’s the only standard promise libraries use. The Promises/A+ specification has a notion called thenable…
Content Service for Google Apps Script returning HTML instead of JSON
Trying out the Content Service API and the example is returning HTML when it should be returning JSON, what am I doing wrong? https://developers.google.com/apps-script/guides/content GAS from another file trying to make the request: Answer Your usage of ContentService is correct, the code works exactly as is.…
Loading object as Geometry instead of BufferGeometry in threejs
I’m trying to load an .stl file into three.js. Everything works fine and I get the model as BufferGeometry using this code: To make it easier to further manipulate the model I would like to have the geometry as regular THREE.Geometry instead of THREE.BufferGeometry. Is it possible to either load the .st…
Implement Facebook API login with reactjs
I’m working on using Facebook’s Javascript SDK for authentication. I’ve been able to import the SDK properly and put a Like button on my page. But, the facebook login button has to be wrapped in the tag: I currently have all of the code from the Facebook Login tutorial pasted into my index.h…
calculating intersection point of quadratic bezier curve
This is definitely pushing the limits for my trig knowledge. Is there a formula for calculating an intersection point between a quadratic bezier curve and a line? Example: in the image below, I have P1, P2, C (which is the control point) and X1, X2 (which for my particular calculation is just a straight line …
Can I use ES6’s arrow function syntax with generators? (arrow notation)
That is, how do I express with arrow syntax? I’ve tried all the combinations I could think of, and I can’t find any documentation on it. (I am currently using Node.js v0.11.14.) Answer Can I use ES6’s arrow function syntax with generators? You can’t. Sorry. According to MDN The functio…
How do i find and count unique values in nested JSON objects?
i have the following JavaScript What i am trying to accomplish is when the order comes through a function scans the JSON and creates an array with each unique product name and adds 1 to the quantity each time. i have tried using a for loop but it loops it the amount of times but doesn’t find the name an…
Increase performance for 10,000 particles in HTML5 Canvas
I have two JS Fiddles, both with 10,000 snow flakes moving around but with two different approaches. The first fiddle: http://jsfiddle.net/6eypdhjp/ Uses fillRect with a 4 by 4 white square, providing roughly 60 frames per second @ 10,000 snow flakes. So I wondered if I could improve this and found a bit of i…