Currently, If I run npm install, it installs the updated version of already installed packages. How can I install the exact version as specified in the package.json file? Answer That behavior is really driven by the one specifying the versions in the package.json. If the version number looks like “1.0.0…
Tag: node.js
Javascript set const variable inside of a try block
Is it possible in ES6 to set a variable inside of a try{} using const in strict mode? This fails to lint because configPath is defined out of scope. The only way this seems to work is by doing: Basically, is there any way to use const instead of let for this case? Answer Declaring a variable as const requires
require is not defined in Firebase?
I am trying to run a html file in Firebase staging environment. I have used Firebase npm package in the js code. But while running in the browser it throws error “require is not defined”. HTML Code: JS Code: Please suggest me some solution. Answer You need to setup a tool (such as webpack) to mana…
How to read only column A value from excel using nodejs?
How to read only Column A value from excel using nodejs(node-xlsx) ? Please advise. After reading all the column values then loop through to search from other source. Answer Try other npm package called: xlsx:
Pug – generating Select and Options
I am new to Pug and I am trying to generate a Select set of Options like this: However the result I get, in the rendered page, is an empty select input followed by the list of options as text Answer Indents the code https://pugjs.org/language/iteration.html
How to delete all pictures of an directory
I am trying to delete all pictures of an directory. But getting error on directory path. And also dont know how to get all pictures path & delete all of them. My directory structure : I have tried this : But getting error : Cannot find module ‘../tmp/upload’ Need help to get the path & all…
Check if file is completely written with node.js
I need a little bit help how I can handle following task in JavaScript: I have an app, that use Jimp for image processing and node-sprite-generator. That all runs in node.js context. I load a few images to Jimp, make something with the image then write it back to my file system with the nodejs filemodule. The…
Detect if node receives stdin
I’m interested in determining if my node script is being called with data being streamed into it or not. That is, I want to differentiate between these two cases Answer process.stdin.isTTY will be false when you have data piped to stdin: See docs: https://nodejs.org/api/tty.html
Executing nodejs script file in PHP using exec()
In my Application, I want to execute a Node.JS file from PHP which in turn makes an HTTP request to another PHP file. In short this is the Process that I am doing. PHP file—>calls–> Nodejs file—>processes data –>and makes http request to–>PHP File When I run the no…
Atom Electron capture all keyboard events even when app is unfocused
I would like to know if there is a way to make an application with Atom Electron that runs and gets my keyboard events when the user is/isn’t focused on my app. For example if he is on Chrome and writes something, my app will store all the keys that he pressed. I searched a little but didn’t find …