So I’ve recently begun learning Javascript using the tutorials on freecodecamp and there’s this challenge I’ve been stuck on for a few hours now. The function always returns ‘No contact found’ and I don’t understand why. If someone were to explain it to me and correct my co…
Tag: javascript
JavaScript execCommand(‘copy’) not working
I am unable to use the execCommand(‘copy’), trying to copy value which is selected in multi-select option. iam getting value in “temp” but the value which is getting in temp not copying or getting in clipboard. Answer I understand that your intention is the following: you want to copy …
How to mock functions in the same module using Jest?
What’s the best way to correctly mock the following example? The problem is that after import time, foo keeps the reference to the original unmocked bar. module.js: module.test.js: I could change: to: but this is pretty ugly in my opinion to do everywhere. Answer fwiw, the solution I settled on was to u…
Javascript Canvas draw rectangles or circles
I’m searching for a way to “live” draw rectangles or circles on a canvas. I found various ways with fillRect() to draw rectangles, but not live. What I mean is, to be able to mouseDown() on one point and move it to another point in the canvas, which defines the size of the canvas, just like …
Mobile Safari, scrollIntoView doesn’t work
I have a problem with scroll to element on mobile Safari in iframe (it works on other browsers, including Safari on mac). I use scrollIntoView. I want to scroll when all content has been rendered. Here is my code: Answer ScrollIntoView does not work (currently). But you can manually calculate the position of …
iframe not reading cookies in Chrome
Chrome is not allowing a child iframe to read its own cookies. I have a parent webpage with a child iframe: parent at https://first-site.com child at <iframe src=”https://second-site.com”> (inside of parent) cookie set with path: ‘/’ secure: true httpOnly: false domain: ‘.s…
Jquery : Dropdown menu not working correctly on mobile devices
I’m currently working on making a website responsive and I’m working on the navigation menu. I have a preheader which shows some social media icons and other stuff. Using a media query, I display a menu button on smaller screens and hide the full navigation menu. When the button is clicked, the na…
How to create dynamic two relational dropdown in Vuejs
I am new to vue.js. I’m stuck trying to dynamically set the options of one select based on the selected value in another. For example, I have two dropdowns named division and district. If value of A is 1, then the district select should load the related codes. I can do it with jQuery but not with Vue. H…
Await equivalent of ‘Promise.resolve().then()’?
I’m familiar with Promises, but have inherited some rather unusual code that, rather than making a new Promise(), uses the following: From my research, this is a weird version of setImmediate – ie, run the following function on the next tick. What would be the await version of this? Answer There m…
Setting a ‘default’ v-on event for a component within Vue
I have a set of ‘text-input’ custom components which house some boilerplate markup and an ‘input’ element. One way of getting the value of the ‘text-input’ in to it’s parent is to $emit an event when the value has changed. I need to capture and handle the $emit with a…