headjs does some very crazy JavaScript type things to its API. For instance it takes an arbitrary number of strings (not a string array) for a function. Sometimes it ends that same function call, you can optionally end it with a function, for example. You can also (just as easily) do the following My question…
Author: admin@master
Replace each leading and trailing whitespace with underscore using regex in javascript
The output should look like this This code works fine for the trailing whitespaces but all the leading whitespaces are replaced with just one underscore. The working php regex for this is: /Gs|s(?=s*$)/ Answer Not pretty, but gets the job done
Insert a file to a particular folder using google-drive-api
I tried as given below. But the file is going to root directory(My-Drive). Answer I solved the issue. The error was in this line: The line should be: Documentation can be found at https://developers.google.com/drive/web/folder
Dealing with touchMove events in iOS and Ember
I’m adding iOS support to an Ember application which uses Flame.js. Most Flame.js widgets don’t have built-in support for touch events at the moment, so I’m working on adding it to the ones I need. I’ve got touchStart and touchEnd working just fine for clicking and certain state transi…
What’s the fastest way to convert String to Number in JavaScript?
Any number, it’s number. String looks like a number, it’s number. Everything else, it goes NaN. Answer There are 4 ways to do it as far as I know. By this quick test I made, it actually depends on browsers. https://jsben.ch/NnBKM Implicit marked the fastest on 3 browsers, but it makes the code har…
Multiple populates – mongoosejs
Just a simple query, for example with a double ref in the model. Schema / Model Query I already tried something like In fact only one of the populates works. So, how do is get two populates working ? Answer You’re already using the correct syntax of: Perhaps the meal ObjectId from the order isn’t …
File API – Blob to JSON
I’m trying to do some experiment with HTML5, WebSocket and File API. I’m using the Tomcat7 WebSocket implementation. I’m able to send and received text messages from the servlet. What I want to do now is to send from the servlet to the client JSON objects, but I want to avoid text message in…
How to show setCustomValidity message/tooltip without submit event
I’m using forms basic validation to check if email is correct format, then the data is sent by Ajax where it checks if email address is already in use and did the user select country/state or left default values in select boxes. But for HTML5 form validation to be done submit event is needed, upon click…
How to get opposite boolean value of variable in Javascript
How to get opposite value of a (false) and vice versa? Answer
Recursive function returns undefined
I have a function which calculates taxes. I can’t see why it doesn’t stop the recursion. Answer In this arm of your function: you are not returning a value from the function or setting returnTax. When you don’t return anything, the return value is undefined. Perhaps, you want this: