I decided to day to embark on element and I can say so far it have been nightmare to get it work. All I want is to plot a sine graph. So after good reading I still cannot either get origins nor get it plot. Below is what I have tried (my first time ever with that tag so excuse
Author: admin@master
Do JavaScript bindings take up memory while not in use?
I have a calendar that I’ve built, and on clicking a day on the calendar, a function is run. You can go month to month on the calendar, and it generates months as it goes. Since every day on the calendar, shown or not, is binded to an event using the class of all the “days,” I’m worrie…
defining getters/setters in an object literal with a self-invoking function javascript
When defining an object literal its possible to use a self-invoking function so the function has access to private variables, But is it possible to do the same thing with a getter/setter in an object literal? Answer [edit 2022] A pretty old answer. More actual: you can create a factory function. In the snippe…
NodeJS: Would App Run Faster if Freeze Objects?
Most of my objects/functions do not change. Would the application run faster if I freeze most of the objects via Object.freeze(object)? Or will it make no difference at all? Answer Freezing (and sealing) causes a signficant performance hit instead of a gain across various browsers. Just take a look at some of…
Unable to run node app.js file
I am learning node.js and I am trying to run the app.js file using the command node app.js but the bash returns nothing (no errors either). Here are the steps I followed: $ brew install node $ sudo npm install -g express $ sudo npm install -g express-generator after i get into a new folder I created I run $
Going back to previous page using javascript
Is using JavaScript the most efficient way of navigating back to the previous page when a link or button is clicked? What if JavaScript is disabled on the user’s end (Which most people don’t)? Are there any known issues with cross-browsers? Are there any browsers that don’t support the histo…
Disable hiding of address bar on mobile
I’m working on a mobile website which has “pages” that have div’s which take up the screens full size and you can scroll between each one. The problem is, the window resizes whenever a user scrolls downward because the address bar hides. This causes problems when you scroll to the comp…
REGEX to match only VALID EXCEL COLUMNS (A-XFD)
Ok, I have ANOTHER REGEX question for everyone. I have a field that has multiple validation steps. The first step is to ensure it isn’t blank, second is to ensure that only between 1 and 3 CAPITAL LETTERS are entered, and third, to ensure it doesn’t contain “[” (an opening bracket will…
.map() undefined is not a function in React.js
Right, I’m probably missing the obvious here but I am getting an ‘Uncaught TypeError: undefined is not a function’ I seems to be .map() that’s the problem but I can not see why. If I change it to var ideas = this.state.data I don’t get any errors, the JSON data is formatted corre…
jQuery: trigger event on tab key
I would like to call a function when the tab key is pressed within any field with the name=”notes”. I tried the following but this doesn’t fire (using IE 9). What do I have to change here to make this work at least in IE 8 and IE 9 ? Answer The problem I think is in the type of