How to download Javascript data as file on the client side
When building websites or web apps, creating a “Download as file” link is quite useful. For example if you want to allow user to export…
Category: JS
Dropzonejs: how to fix error “Server responded with 0 code”
We upload to other domain (cdn.tutorialspots.com), we see a request with method OPTIONS We see a request header: and don’t see response header Access-Control-Allow-Headers This…
How to prevent Javascript redirect in window.location
In Javascript, you can change location by using some methods like … However, in some cases, you want to prevent it. How to do it?…
How to allow cross-origin ajax request get and set cookie
How to allow cross-origin ajax request get and set cookie? Step 1: send header Access-Control-Allow-Credentials: true Example for PHP: Step 2: set header Access-Control-Allow-Origin: http://yourdomain.com…
Example: jQuery UI Draggable with Handle and Cancel
HTML CSS: JAVASCRIPT: Live Example: http://jsfiddle.net/sans_amour/dcn16tq9/
jQuery: how to check if event exists on element
Get all events registered by jQuery: Example: Check if event exists on element: Example:
Javascript: read djvu online
Use library: minidjvu.js And BlobBuilder.js here. HMTL: Online demo
Javascript: BlobBuilder polyfill
The BlobBuilder interface provides an easy way to construct Blob objects. Just create a BlobBuilder and append chunks of data to it by calling the…
How to fix error: WebSocket is already in CLOSING or CLOSED state
Some errors you can see: Example 1: Example 2: Example 3: How to fix this error? Server: if you use nodejs If you use socket.io,…
How to get client country of your visitor by Javascript
Method 1: use https://get.geojs.io/v1/ip/geo.js (with jQuery) To get country code: Online demo: https://jsfiddle.net/sans_amour/r49v5w60/ Method 2: use https://get.geojs.io/v1/ip/geo.js To get country code: Online demo: https://jsfiddle.net/sans_amour/mps5y4j7/ Method…