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How to create a React Modal (which is appended to ) with transitions?

There is a modal in this answer https://stackoverflow.com/a/26789089/883571 which is creating a React-based Modal by appending it to <body>. However, I found it not compatible with the transition addons provided by React. How to create one with transitions(during enter and leave)? Answer At react conf 2015, Ryan Florence demonstrated using portals. Here’s how you can create a simple Portal component…

Eloquent Javascript Chapter 4: arrayToList/listToArray Execise

Question from eloquentjavascript: Write a function arrayToList that builds up a data structure like the previous one when given [1, 2, 3] as argument, and write a listToArray function that produces an array from a list. Also write the helper functions prepend, which takes an element and a list and creates a new list that adds the element to the

Client Socket.io disconnects and reconnects to websocket persistently

I am connected via Socket.io 1.3.4 (via websockets) to the NodeJS server and client socket.io fires up “disconnect” event 5-30 seconds. Every “disconnect”->”reconnecting”->”reconnect” iteration takes approx. 2 seconds. I am connected via cable to pretty stable network. Server is hosted on AWS. Sometimes I have bad Wi-Fi connection, but no “disconnect” event fire up at all. How can I debug

jquery, javascript not working in bootstrap

I’m using JQuery and bootstrap, and when I try to click the button that should invoke the function, it doesn’t work. I’ve looked in the developer console and there is nothing there, anyone know? Answer You just need to close some script tags properly and place your script in the bottom:-) Plunker PS:- I didn’t added the jumbotron-narrow-me.css in example

Why doesn’t chrome.tabs.query() return the tab’s URL when called using RequireJS in a Chrome extension?

I have a simple Chrome extension that adds a browser action. When the extension’s popup is opened, it needs to access the current tab’s URL. Since it doesn’t need access to all the tabs, I just have the activeTab permission specified in the manifest: In theory, that should give the popup access to the active tab’s URL, but the URL

Mongoose JS findOne always returns null

I’ve been fighting with trying to get Mongoose to return data from my local MongoDB instance; I can run the same command in the MongoDB shell and I get results back. I have found a post on stackoverflow that talks about the exact problem I’m having here; I’ve followed the answers on this post but I still can’t seem to

React form onChange->setState one step behind

I encountered this problem building a webapp and I replicated it in this jsfiddle. Essentially, I would like an input to call this.setState({message: input_val}) every time I type something into it, then pass it into the parent App class which then re-renders the message onto the Message class. However the output seems to always be one step behind what I

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