I am just starting to learn Javascript and I immediately got confused by seemingly contradictory statements in Mozilla’s A re-introduction to JavaScript (JS tutorial). One one hand: “There’s no such thing as an integer in JavaScript, so you have to be a little careful with your arithmetic if…
Author: admin@master
Automatically check a checkbox with a userscript?
Some sites (namely Steam Community Market) require the user to manually check a specific checkbox for repetitive actions like buying items. I’d like to have that checkbox always checked. URL: http://steamcommunity.com/market/listings/730/USP-S%20%7C%20Torque%20(Field-Tested) element: <input id=”…
How to auto sum dynamic input fields in javascript
I’m trying to make an auto sum. I’m starting with a text input field and a button. Pushing the button ads a new input field. Sum field should get … the sum. I have troubles adding the values in javascipt. Thanks! Answer I think this is what you are trying to do: Check this plunk: http://plnk…
can’t for loop in ejs
Im trying to loop in ejs template, but unexpectedly keep getting these error In normal javascript In javascript it works just fine. The problem is in ejs, I have two versions that I tried, both of them are not working First Attempt Second attempt It keeps telling that Cannot read property ‘title’ …
express.js – how to intercept response.send() / response.json()
Lets say I have multiple places where I call response.send(someData). Now I want to create a single global interceptor where I catch all .send methods and make some changes to someData. Is there any way in express.js? (hooks, listeners, interceptors, …)? Answer You can define a middleware as below (take…
Chrome Extension: How to insert CSS conditioned on variable from Chrome storage using insert CSS?
I’m somewhat new to Chrome Extensions, so I think I may just be missing something small, but I’m trying to allow users to load an additional page of CSS and a page of JS depending on their options (it’s basically a different theme). I’m storing the variable that should trigger the load…
Disable an on click event after the first click
I have a function that counts every time a user clicks on and image on the page: And I want to disable it after the first click so it won’t keep counting duplicate clicks of the same picture. I know adding this.onclick=null on the HTML tag will work, but I’m wondering if there a way to do this on …
How to break long import statements into multiple lines in ES6?
I have a pretty long import statement in my JavaScript (ES6) file: Is it OK to add new lines like this? If not, is there any other way to write clean (keeping my code within 80 columns) import statements in ES6 syntax using Babel? Answer Here are the results from my test using ESLint. ESLINT PASSED ESLINT PAS…
How To Sum All Table Rows td (TotalPrice) using td id Jquery
I am adding values to table like: Item,Quantity,Price,TotalPrice Now there are multiple rows: How can i sum TotalPrice of all to get GrandTotal using Jquery. Code: Its possible when i insert new row data its show grand total in textbox/label,Like: Answer After you use class= instead of id= .Cause ID MUST be u…
How to add a specific class to select2 drop element?
I have select2 customized via css with its general classes and ids. Now, I’m trying to customize a specific class that will be provided to select2 and then apply in css to it. My issue: is NOT the select per say but the drop of it ( the div with the class select2-drop ) that is appended to the body,