News Articles conditional-statements

Conditional rendering in react prop

I want to ask if this possible in react while passing props or something similar. Eslint underlined the whole process in red. Component A, enter code here <div> <button style={{style:props.submit}}> Submit</button> <button style={{style:props.loading}}> Loading</button> </div> Component B import ComponentA from ‘A’, export default class ComponentB extends Component { constructor(props) { super(); this.state = { load:false, […]

Conditional rendering in react prop

I want to ask if this possible in react while passing props or something similar. Eslint underlined the whole process in red. Component A, enter code here <div> <button style={{style:props.submit}}> Submit</button> <button style={{style:props.loading}}> Loading</button> </div> Component B import ComponentA from ‘A’, export default class ComponentB extends Component { constructor(props) { super(); this.state = { load:false, […]

Conditional rendering in react prop

I want to ask if this possible in react while passing props or something similar. Eslint underlined the whole process in red. Component A, enter code here <div> <button style={{style:props.submit}}> Submit</button> <button style={{style:props.loading}}> Loading</button> </div> Component B import ComponentA from ‘A’, export default class ComponentB extends Component { constructor(props) { super(); this.state = { load:false, […]

React Component conditional rendering for that unique posts ID

So Im mapping over a list of posts for every user, If the foreign key for that post match the logged in users ID, a triple dot dropdown will appear on all the users posts. My problem is that the dropdown button has an onclick resulting in a dropdown appearing on all of the users […]

How to edit the value of a table data from input field

I have a small form with Name and Phone number, its a simple phonebook. Every new element from the input will appear below in a table, next to the name and phone number there are 2 buttons, an edit and a delete button. The delete button works, but I am having problem editing the added […]

Stuck On Adding Ability to Switch Player Turns in Tic-Tac-Toe Game

Trying to build the tic-tac-toe game and stuck on the part with the alternation of players. The player marks (‘X’ or ‘O’) are defined in the factory function that creates the players. I am able to get it to where the squares on the gameBoard can populate the appropriate mark, but I can’t seem to […]

How can I use conditional logic with JavaScript form validation?

I have the following JavaScript function which is triggered by an onclickevent and is working fine. <script> function validateForm() { let xgame_name = document.forms["myForm"]["game_name"].value; if (xgame_name == "") { alert("Game Name must be filled out"); return false; } let xdev_name = document.forms["myForm"]["developer_name"].value; if (xdev_name == "") { alert("Developer Name must be filled out"); return false; […]

Vue.js change background-image on multiple conditions

is there a way to change a background-image on conditions? Im trying to build a weatherapp and I will change the background of a div. Like: Weather api returns: rainy -> change background image to rain.jpg snow -> change background image to snow.jpg sunny -> change background to sunny.jpg etc. I’ve tried multiple ways already […]

Unable to set If condition back and forth in Javascript [closed]

I want to have the ball simultaneously go from "OFF" gray to "ON" yellow and I just can’t get it to work. I’ve tried with both Else and with another If condition. function onBall3Click() { var ball3 = document.querySelector(‘.ball3’); if (ball3.innerText = “OFF”) { ball3.innerText = “ON”; ball3.style.backgroundColor = ‘yellow’; } else { ball3.innerText = […]

Conditional rendering of string var

As shown below, I have a text that renders text in this manner. address, additionalInfo <Text subtitle gray> {address} ", " {additionalInfo} </Text> However I want to re-write it so that the text will render address, additionalInfo But if {additionalInfo}=null I want it to render address ^without the linebreak. How do I go about doing […]

Conditional rendering with routing

I want to do conditionl rendering with routing – to switch to SignUp component and to give it a path name for the URL. The way it is now it will keep the previous component path name (could be /search for instance) How can I do it right ? This is how it is right […]

Failing to get condition to work with div?

I want to have the ball sized to the prompt of the user upon entering it and something doesn’t work, can’t tell what I’m doing wrong. <style> body { background-color: black; text-align: center; } h1 { color: white; } div { width: 100px; height: 100px; margin: auto; margin-bottom: 10px; border-radius: 50%; transition: 0.3s; line-height: 50px; […]

Opposing condition for a div

I need to make a ball grow until it reaches 400, which thereafter it would shrink the same way. Would really appreciate feedback what I’m doing wrong in my code: ball code <style> body { background-color: black; text-align: center; } h1 { color: white; } div { width: 100px; height: 100px; margin: auto; margin-bottom: 10px; […]

Opposing condition for a div

I need to make a ball grow until it reaches 400, which thereafter it would shrink the same way. Would really appreciate feedback what I’m doing wrong in my code: ball code <style> body { background-color: black; text-align: center; } h1 { color: white; } div { width: 100px; height: 100px; margin: auto; margin-bottom: 10px; […]

Opposing condition for a div

I need to make a ball grow until it reaches 400, which thereafter it would shrink the same way. Would really appreciate feedback what I’m doing wrong in my code: ball code <style> body { background-color: black; text-align: center; } h1 { color: white; } div { width: 100px; height: 100px; margin: auto; margin-bottom: 10px; […]

autofill select option elements on load with Vuejs 3

I’m new to Vue.js and trying to make a simple calculator but cant quite make it passed this hurdle. My current goal is to display the current month and its numerical length as a placeholder upon initial load, while nothing currently displays until a user selection is made. I was considering another function that will […]

Typescript conditional causes error when stored in a variable

Can someone please explain why the first example works in Typescript, but the second example throws an error??? Here is a live example in a Typescript playground. const {type, payload} = action; switch(type) { … //*** EXAMPLE 1 ***// case "CREATE_VARIABLE": if (payload == null || typeof payload === "string" || !("color" in payload)) return […]

React tab.find() as ternary condition in inline style

Got an error using a method as ternary condition in inline style of a div : <div style={{display: tabHidden.findIndex(e=>e === item.name) > -1 ? ‘none’ : ‘flex’}}> A function push or splice the name of item from an array in a state (tabHidden). Here is the function call : <Icon path={tabData.find(e=>e.name === item.name).orientation === ‘horizontal’ […]

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Senior Software Developer

Creator of @LzoMedia I am a backend software developer based in London who likes beautiful code and has an adherence to standards & love's open-source.