When I assign integer value to localStorage item and check its type it returns string, I can typecast it to int for my use My question is it possible to store integer value inside localStorage as I can do for Javascript objects without typecasting? Answer My question is it possible to store integer value insi…
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Changing images onclick
I want the image to change when someone clicks on it, but this isn’t working. Can someone explain me the reason? Answer Your code is not working because you use retrieved the value of src and placed it in a variable called replace like so: After that you changed the content of the variable like so: All …
How to access canvas context in React
I made a color picker with React and Canvas. Currently the components are rendered in React and canvas is done with vanilla javascript. I’d like to two to mesh more, so I want the click events to be handled with React. For example, this I would hope would be able to translate to this But that doesn̵…
Eslint – Maximum call stack size exceeded
Working in a React / Webpack project I started to have problems with the eslint library. The eslint package is downloaded using npm and it’s used to validate the project using a webpack preLoader. It used to work fine until recently when I tried to git clone the same project to an other folder. After in…
How to let a div or span tag to receive a keydown event in Javascript
For example, Here is a jsfiddle example Answer You can specify the tabindex on it. For example,
Is it possible to determine if a GeoJSON point is inside a GeoJSON polygon using JavasScript?
Is it possible to determine whether a GeoJSON point at a given lat,lon lies within a given GeoJSON polygon using only JavaScript (either through d3, topojson, or any other way)? For example, I can draw a map showing countries in the UK based on the tutorial here. I then have a some points which have coordinat…
How do I refresh a DIV content?
I am trying to refresh a certain div within a bunch of divs. The div content is basically generated by PHP along with data from a MySQL database in addition to many variables being sent with the help of an XMLHttpRequest. The idea is to reload/refresh the div itself and not load a php file or to overwrite it …
How to iterate over over all Unicode characters?
Is it possible to iterate over all Unicode characters (UTF-8)? Thanks! I’ve tried using: But I’m not sure how to implement it. Answer According to the docs, the parameter passed to String.fromCharCode(a) is converted calling ToUint16 and then said character is returned. You may call it with any nu…
appending to the DOM – vanilla javascript
I wanted to practice my vanilla javascript skills since I’ve been so library-heavy lately. My goal was to filter an array of JSON data (by events after 10/01/2015), and then append them as list items to the DOM, with the class being “events”, and give the ability to delete events. Why isn…
Export a Json object to a text File
I’m trying to write a Json object (JsonExport) and I’d like to write its content into a text file. I’m using max4live to export data from Audio DAW to Json in order to export to a server, but after that I would like to see the whole Json Object in a text file: The compiler runs with no error…