reactjs

[Solved] How to use a div tag to create a layout and make it responsive [closed]

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Like this, if you do it without fancy flexbox stuff: <div class=”wrapper”> <div class=”right”></div> <div class=”left”> <div class=”inner-top”></div> <div class=”inner-bottom”></div> </div> </div> .wrapper { height: 200px; position: relative; width: 100%; } .right { width: 50%; background-color: blue; height: 100%; display:inline-block; float: left; } .left { width: 50%; background-color: red; height: 100%; display: inline-block; } .left … Read more

[Solved] How to push new object in an array?

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The problem is you assign an empty array every time you call the function radioButtonVal = (e) => { this.radioid = e.target.name; this.radiovalue = e.target.value; this.radioButtonValTitles = []; //right here you initiate an empty array this.radioButtonValFind = this.radioButtonValTitles.find(x => x.id === this.radioid); if(this.radioButtonValFind){ this.radioButtonValFind.id = this.radioid; this.radioButtonValFind.value = this.radiovalue; } else { this.radioButtonValTitles.push({id: this.radioid, value: … Read more

[Solved] React Drag and Drop plugin suggestion

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Here I created for you a small example that tries to replicate the drag in a placeholder behavior from the link you shared above. Keep in mind that you have total freedom to create how many droppable targets as you want and make them accept different types of items, based on what you specify in … Read more

[Solved] Firebase: how to add timestamp to database in firestore – where react context api is used

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To hopefully help you with server timestamp I have modified the simple react-firebase-hook app created as an answer for this question: https://stackoverflow.com/a/60504303/610053 I’ve updated my Firebase class with an extra method called serverTimestamp: class Firebase { constructor() { app.initializeApp(firebaseConfig); this.realtimedb = app.database(); this.firestore = app.firestore(); this.serverTimestamp = app.firestore.FieldValue.serverTimestamp; } } const FirebaseContext = React.createContext(null); const … Read more

[Solved] Interview Advice [closed]

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There are a lot of possible answers, what I think he expected was that you need to make sure that a component is not re-rendered X times more than it should be. For instance, if you setState without checking for redundancy, your component/App will render a lot more than it should if you did the … Read more

[Solved] Every time I try to make React app it is looking for funding & have some vulnerabilities. & then get stuck

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Finally I find the solution on someone blog. Click here to see the solution in the blog Fix 1 (Easy One)- I don’t know why but this problem is observed with 12.16.2-x64.msi node version. If you installed x64 version then you just need to uninstall this version and install x32 bit version. This fix should … Read more

[Solved] What would be the best way to sort events according to its date

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First you need to convert it to an array: var events = Object.keys(obj).map((key) => { return Object.assign({}, obj[key], {eventName: key}); }); Then you need to group them by date. We can do this with lodash. var groupBy = require(‘lodash/collection/groupBy’); var eventsWithDay = events.map((event) => { return Object.assign({}, event, {day: new Date(event.date).setHours(0, 0, 0, 0)) }); … Read more

[Solved] enable the go to next step button, tried setting up state and created new onclick method in the radio button

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https://codesandbox.io/s/6zrw7r66rr I have forked your codesandbox, and edit 4 files. Pretty sure it satisfies all your requirements stated above VerticalLinearStepper.js: this is where we store our username, password, disabledNext (radioButton) state and handleChange method for setState. Then, we passed down the state to -> Step1.js -> AsyncValidationForm.js. class VerticalLinearStepper extends React.Component { state = { … Read more

[Solved] Can u please tell me if their is any difference between the codes. And if their is, Then what is the reason behind it? [closed]

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Code one has className=”cards__items__img”, code two has className=”cards__item__img”. Code one has className=”cards__items__link”, code two has className=”cards__item__link”. Items is plural on first code and singular on second. Reason? I don’t know but the first code is very poorly formatted. 1 solved Can u please tell me if their is any difference between the codes. And if … Read more

[Solved] A toggle button on and off for markers in google maps react

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As you already have handleToggle1 function setting the isMarkerVisible flag then on render() you can have this: render() { const markers = this.state.isMarkerVisible ? this.props.policeCall : [] … <your code> return <div> … <your code> {markers.map(({ A, B, M, N, L,O }) => { return ( <Marker onClick={this.onMarkerClick} name={A} info={B} priority={L} position={{ lat: M, lng: … Read more